diff --git a/lib/tests/modules.sh b/lib/tests/modules.sh
index 4690e380ce3c..da8c02e35ba8 100755
--- a/lib/tests/modules.sh
+++ b/lib/tests/modules.sh
@@ -180,7 +180,8 @@ checkConfigOutput "true" config.submodule.inner ./declare-submoduleWith-modules.
 checkConfigOutput "true" config.submodule.outer ./declare-submoduleWith-modules.nix
 
 ## Paths should be allowed as values and work as expected
-checkConfigOutput "true" config.submodule.enable ./declare-submoduleWith-path.nix
+# Temporarily disabled until https://github.com/NixOS/nixpkgs/pull/76861
+#checkConfigOutput "true" config.submodule.enable ./declare-submoduleWith-path.nix
 
 cat <<EOF
 ====== module tests ======
diff --git a/lib/types.nix b/lib/types.nix
index 847a4e902cab..de3c4f0d6030 100644
--- a/lib/types.nix
+++ b/lib/types.nix
@@ -376,16 +376,14 @@ rec {
           else unify (if shorthandOnlyDefinesConfig then { config = value; } else value);
 
         allModules = defs: modules ++ imap1 (n: { value, file }:
-          if isAttrs value || isFunction value then
-            # Annotate the value with the location of its definition for better error messages
-            coerce (lib.modules.unifyModuleSyntax file "${toString file}-${toString n}") value
-          else value
+          # Annotate the value with the location of its definition for better error messages
+          coerce (lib.modules.unifyModuleSyntax file "${toString file}-${toString n}") value
         ) defs;
 
       in
       mkOptionType rec {
         name = "submodule";
-        check = x: isAttrs x || isFunction x || path.check x;
+        check = x: isAttrs x || isFunction x;
         merge = loc: defs:
           (evalModules {
             modules = allModules defs;
diff --git a/maintainers/maintainer-list.nix b/maintainers/maintainer-list.nix
index a7b9b84ffca8..95d4a40eadfc 100644
--- a/maintainers/maintainer-list.nix
+++ b/maintainers/maintainer-list.nix
@@ -1075,6 +1075,21 @@
     githubId = 510553;
     name = "Jos van Bakel";
   };
+  cab404 = {
+    email = "cab404@mailbox.org";
+    github = "cab404";
+    githubId = 6453661;
+    name = "Vladimir Serov";
+    keys = [
+      # compare with https://keybase.io/cab404
+      { longkeyid = "1BB96810926F4E715DEF567E6BA7C26C3FDF7BB3";
+        fingerprint = "rsa3072/0xCBDECF658C38079E";
+      }
+      { longkeyid = "1EBC648C64D6045463013B3EB7EFFC271D55DB8A";
+        fingerprint = "ed25519/0xB7EFFC271D55DB8A";
+      }
+    ];
+  };
   calbrecht = {
     email = "christian.albrecht@mayflower.de";
     github = "calbrecht";
diff --git a/nixos/doc/manual/development/option-types.xml b/nixos/doc/manual/development/option-types.xml
index 173fdfcbbc83..1ec7e3efad71 100644
--- a/nixos/doc/manual/development/option-types.xml
+++ b/nixos/doc/manual/development/option-types.xml
@@ -257,9 +257,9 @@
     <listitem>
      <para>
       A set of sub options <replaceable>o</replaceable>.
-      <replaceable>o</replaceable> can be an attribute set, a function
-      returning an attribute set, or a path to a file containing such a value. Submodules are used in
-      composed types to create modular options. This is equivalent to
+      <replaceable>o</replaceable> can be an attribute set or a function
+      returning an attribute set. Submodules are used in composed types to
+      create modular options. This is equivalent to
       <literal>types.submoduleWith { modules = toList o; shorthandOnlyDefinesConfig = true; }</literal>.
       Submodules are detailed in
       <xref
diff --git a/nixos/modules/services/misc/nixos-manual.nix b/nixos/modules/services/misc/nixos-manual.nix
index 20ba3d8ef0bc..ab73f49d4be5 100644
--- a/nixos/modules/services/misc/nixos-manual.nix
+++ b/nixos/modules/services/misc/nixos-manual.nix
@@ -52,7 +52,7 @@ in
       };
     })
     (mkIf (cfg.showManual && cfgd.enable && cfgd.nixos.enable) {
-      boot.extraTTYs = [ "tty${toString cfg.ttyNumber}" ];
+      console.extraTTYs = [ "tty${toString cfg.ttyNumber}" ];
 
       systemd.services.nixos-manual = {
         description = "NixOS Manual";
diff --git a/nixos/modules/services/misc/rogue.nix b/nixos/modules/services/misc/rogue.nix
index aae02e384c97..d56d103b5f34 100644
--- a/nixos/modules/services/misc/rogue.nix
+++ b/nixos/modules/services/misc/rogue.nix
@@ -40,7 +40,7 @@ in
 
   config = mkIf cfg.enable {
 
-    boot.extraTTYs = [ cfg.tty ];
+    console.extraTTYs = [ cfg.tty ];
 
     systemd.services.rogue =
       { description = "Rogue dungeon crawling game";
diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index 0bbf0d9ab416..3f6921e0f4dd 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -198,6 +198,7 @@ in
   nfs4 = handleTest ./nfs { version = 4; };
   nghttpx = handleTest ./nghttpx.nix {};
   nginx = handleTest ./nginx.nix {};
+  nginx-etag = handleTest ./nginx-etag.nix {};
   nginx-sso = handleTest ./nginx-sso.nix {};
   nix-ssh-serve = handleTest ./nix-ssh-serve.nix {};
   nixos-generate-config = handleTest ./nixos-generate-config.nix {};
diff --git a/nixos/tests/nginx-etag.nix b/nixos/tests/nginx-etag.nix
new file mode 100644
index 000000000000..e357309d166a
--- /dev/null
+++ b/nixos/tests/nginx-etag.nix
@@ -0,0 +1,89 @@
+import ./make-test-python.nix {
+  name = "nginx-etag";
+
+  nodes = {
+    server = { pkgs, lib, ... }: {
+      networking.firewall.enable = false;
+      services.nginx.enable = true;
+      services.nginx.virtualHosts.server = {
+        root = pkgs.runCommandLocal "testdir" {} ''
+          mkdir "$out"
+          cat > "$out/test.js" <<EOF
+          document.getElementById('foobar').setAttribute('foo', 'bar');
+          EOF
+          cat > "$out/index.html" <<EOF
+          <!DOCTYPE html>
+          <div id="foobar">test</div>
+          <script src="test.js"></script>
+          EOF
+        '';
+      };
+
+      nesting.clone = lib.singleton {
+        services.nginx.virtualHosts.server = {
+          root = lib.mkForce (pkgs.runCommandLocal "testdir2" {} ''
+            mkdir "$out"
+            cat > "$out/test.js" <<EOF
+            document.getElementById('foobar').setAttribute('foo', 'yay');
+            EOF
+            cat > "$out/index.html" <<EOF
+            <!DOCTYPE html>
+            <div id="foobar">test</div>
+            <script src="test.js"></script>
+            EOF
+          '');
+        };
+      };
+    };
+
+    client = { pkgs, lib, ... }: {
+      virtualisation.memorySize = 512;
+      environment.systemPackages = let
+        testRunner = pkgs.writers.writePython3Bin "test-runner" {
+          libraries = [ pkgs.python3Packages.selenium ];
+        } ''
+          import os
+          import time
+
+          from selenium.webdriver import Firefox
+          from selenium.webdriver.firefox.options import Options
+
+          options = Options()
+          options.add_argument('--headless')
+          driver = Firefox(options=options)
+
+          driver.implicitly_wait(20)
+          driver.get('http://server/')
+          driver.find_element_by_xpath('//div[@foo="bar"]')
+          open('/tmp/passed_stage1', 'w')
+
+          while not os.path.exists('/tmp/proceed'):
+              time.sleep(0.5)
+
+          driver.get('http://server/')
+          driver.find_element_by_xpath('//div[@foo="yay"]')
+          open('/tmp/passed', 'w')
+        '';
+      in [ pkgs.firefox-unwrapped pkgs.geckodriver testRunner ];
+    };
+  };
+
+  testScript = { nodes, ... }: let
+    inherit (nodes.server.config.system.build) toplevel;
+    newSystem = "${toplevel}/fine-tune/child-1";
+  in ''
+    start_all()
+
+    server.wait_for_unit("nginx.service")
+    client.wait_for_unit("multi-user.target")
+    client.execute("test-runner &")
+    client.wait_for_file("/tmp/passed_stage1")
+
+    server.succeed(
+        "${newSystem}/bin/switch-to-configuration test >&2"
+    )
+    client.succeed("touch /tmp/proceed")
+
+    client.wait_for_file("/tmp/passed")
+  '';
+}
diff --git a/pkgs/applications/audio/yoshimi/default.nix b/pkgs/applications/audio/yoshimi/default.nix
index 24620d91ff5a..0cd512e5093c 100644
--- a/pkgs/applications/audio/yoshimi/default.nix
+++ b/pkgs/applications/audio/yoshimi/default.nix
@@ -6,11 +6,11 @@ assert stdenv ? glibc;
 
 stdenv.mkDerivation  rec {
   pname = "yoshimi";
-  version = "1.6.0.3";
+  version = "1.6.1";
 
   src = fetchurl {
     url = "mirror://sourceforge/yoshimi/${pname}-${version}.tar.bz2";
-    sha256 = "1z2mnmm299ng6jcwa61dzr1ilwa5fjgsggxl2wa5smji6b4npmx7";
+    sha256 = "044k2pcdsb43znc8q63mc4niggpain7wl9s5c4sgsfmrjh0bjapj";
   };
 
   buildInputs = [
diff --git a/pkgs/applications/radio/chirp/default.nix b/pkgs/applications/radio/chirp/default.nix
index 0c31a2006c7e..dcbf3522e392 100644
--- a/pkgs/applications/radio/chirp/default.nix
+++ b/pkgs/applications/radio/chirp/default.nix
@@ -4,15 +4,15 @@
 }:
 python2.pkgs.buildPythonApplication rec {
   pname = "chirp-daily";
-  version = "20191123";
+  version = "20191221";
 
   src = fetchurl {
     url = "https://trac.chirp.danplanet.com/chirp_daily/daily-${version}/${pname}-${version}.tar.gz";
-    sha256 = "11wzk0c9fa3gp185gyd47g3sh7gfallw7qapr6qp913q2zfmif8v";
+    sha256 = "1f4h45cbaq3rssl95xax8gn2bm1slnsbgds479db46czgq6y1qhy";
   };
 
   propagatedBuildInputs = with python2.pkgs; [
-    pygtk pyserial libxml2
+    pygtk pyserial libxml2 future
   ];
 
   meta = with stdenv.lib; {
diff --git a/pkgs/applications/science/biology/bcftools/default.nix b/pkgs/applications/science/biology/bcftools/default.nix
index 33e4de0d95aa..4a6a464de464 100644
--- a/pkgs/applications/science/biology/bcftools/default.nix
+++ b/pkgs/applications/science/biology/bcftools/default.nix
@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "bcftools";
-  version = "1.9";
+  version = "1.10.2";
 
   src = fetchurl {
     url = "https://github.com/samtools/bcftools/releases/download/${version}/${pname}-${version}.tar.bz2";
-    sha256 = "1j3h638i8kgihzyrlnpj82xg1b23sijibys9hvwari3fy7kd0dkg";
+    sha256 = "0b2f6lqhxdlrvfjqxv7a4nzqj68c1j4avn16iqxwwm80kn302wzm";
   };
 
   buildInputs = [ htslib zlib bzip2 lzma curl perl python ];
diff --git a/pkgs/development/compilers/gleam/default.nix b/pkgs/development/compilers/gleam/default.nix
index 2080a643959d..beef0ce03d91 100644
--- a/pkgs/development/compilers/gleam/default.nix
+++ b/pkgs/development/compilers/gleam/default.nix
@@ -2,18 +2,18 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "gleam";
-  version = "0.5.0";
+  version = "0.6.0";
 
   src = fetchFromGitHub {
-    owner = "lpil";
+    owner = "gleam-lang";
     repo = pname;
     rev = "v${version}";
-    sha256 = "17h573fm5b1f71ivyipl76p0vw7injm7j3cbg6plkfizcb1j5m7f";
+    sha256 = "1fvy2j6pw1rwm0rg7555q3qg2069cx2b9lk0nsyc3jxsqp9hbn6i";
   };
 
   buildInputs = stdenv.lib.optionals stdenv.isDarwin [ Security ];
 
-  cargoSha256 = "04v1gj5nmmcizyrsg6b87qsfzw2zqi57vf1zlnq8680yc54qdah9";
+  cargoSha256 = "0zfdsnrnxplvi4f92l7sqdp5yk5p738ra64m41izlcilkwj1j3vp";
 
   meta = with stdenv.lib; {
     description = "A statically typed language for the Erlang VM";
diff --git a/pkgs/development/libraries/gegl/4.0.nix b/pkgs/development/libraries/gegl/4.0.nix
index 75897b036bfa..b3e8ec2e1780 100644
--- a/pkgs/development/libraries/gegl/4.0.nix
+++ b/pkgs/development/libraries/gegl/4.0.nix
@@ -63,6 +63,9 @@ stdenv.mkDerivation rec {
       url = "https://salsa.debian.org/gnome-team/gegl/raw/9b7520b38d87cd8ad4b39bf0b8c62d011da25169/debian/patches/increase_test_timeout.patch";
       sha256 = "1prc1h1aipjd9db0i1j7nzga4zvk3vl8qsjpz1jzv1wwvz02isly";
     })
+
+    # Remove gegl:simple / backend-file test that times out frequently
+    ./patches/no-simple-backend-file-test.patch
   ];
 
   nativeBuildInputs = [
diff --git a/pkgs/development/libraries/gegl/patches/no-simple-backend-file-test.patch b/pkgs/development/libraries/gegl/patches/no-simple-backend-file-test.patch
new file mode 100644
index 000000000000..bf07572182b3
--- /dev/null
+++ b/pkgs/development/libraries/gegl/patches/no-simple-backend-file-test.patch
@@ -0,0 +1,10 @@
+diff --git a/tests/simple/meson.build b/tests/simple/meson.build
+index 2c735d80a..ae4d50f2a 100644
+--- a/tests/simple/meson.build
++++ b/tests/simple/meson.build
+@@ -1,5 +1,4 @@
+ testnames = [
+-  'backend-file',
+   'buffer-cast',
+   'buffer-changes',
+   'buffer-extract',
diff --git a/pkgs/development/libraries/gf2x/default.nix b/pkgs/development/libraries/gf2x/default.nix
index b1a2524065a5..4697f28bb9fb 100644
--- a/pkgs/development/libraries/gf2x/default.nix
+++ b/pkgs/development/libraries/gf2x/default.nix
@@ -1,20 +1,25 @@
 { stdenv
 , lib
-, fetchurl
+, fetchgit
+, autoreconfHook
 , optimize ? false # impure hardware optimizations
 }:
 stdenv.mkDerivation rec {
   pname = "gf2x";
-  version = "1.2"; # remember to also update the url
+  version = "1.3.0";
 
-  src = fetchurl {
-    # find link to latest version (with file id) here: https://gforge.inria.fr/projects/gf2x/
-    # Requested a predictable link:
-    # https://gforge.inria.fr/tracker/index.php?func=detail&aid=21704&group_id=1874&atid=6982
-    url = "https://gforge.inria.fr/frs/download.php/file/36934/gf2x-${version}.tar.gz";
-    sha256 = "0d6vh1mxskvv3bxl6byp7gxxw3zzpkldrxnyajhnl05m0gx7yhk1";
+  # upstream has plans to move to gitlab:
+  # https://github.com/NixOS/nixpkgs/pull/45299#issuecomment-564477936
+  src = fetchgit {
+    url = "https://scm.gforge.inria.fr/anonscm/git/gf2x/gf2x.git";
+    rev = "gf2x-${version}";
+    sha256 = "04g5jg0i4vz46b4w2dvbmahwzi3k6b8g515mfw7im1inc78s14id";
   };
 
+  nativeBuildInputs = [
+    autoreconfHook
+  ];
+
   # no actual checks present yet (as of 1.2), but can't hurt trying
   # for an indirect test, run ntl's test suite
   doCheck = true;
diff --git a/pkgs/development/libraries/libfilezilla/default.nix b/pkgs/development/libraries/libfilezilla/default.nix
index fd17267b615e..0fa5c3a7db0e 100644
--- a/pkgs/development/libraries/libfilezilla/default.nix
+++ b/pkgs/development/libraries/libfilezilla/default.nix
@@ -9,11 +9,11 @@
 
 stdenv.mkDerivation rec {
   pname = "libfilezilla";
-  version = "0.19.1";
+  version = "0.19.3";
 
   src = fetchurl {
     url = "https://download.filezilla-project.org/${pname}/${pname}-${version}.tar.bz2";
-    sha256 = "0cjscv68nnqivzba94xapx1c970j1jbdbm0h3g2ym9i0hgnyyhha";
+    sha256 = "0fml6whdbfcwc8nfjhvrnidkscv6q2x988zf3alfjl2mdpw4jgd4";
   };
 
   nativeBuildInputs = [ pkgconfig ];
diff --git a/pkgs/development/libraries/ntl/default.nix b/pkgs/development/libraries/ntl/default.nix
index 10e59c5117c0..699931b686b4 100644
--- a/pkgs/development/libraries/ntl/default.nix
+++ b/pkgs/development/libraries/ntl/default.nix
@@ -14,11 +14,11 @@ assert withGf2x -> gf2x != null;
 
 stdenv.mkDerivation rec {
   pname = "ntl";
-  version = "11.4.1";
+  version = "11.4.2";
 
   src = fetchurl {
     url = "http://www.shoup.net/ntl/ntl-${version}.tar.gz";
-    sha256 = "03k2hb6yn49d1f9cdig2ci7h5ga0x3nb3li60hh19wdqzg28f1m3";
+    sha256 = "11r3f37psdbjw926kf6bn5bp69aj88f5cchvv1xh2bhrcjdp4r1b";
   };
 
   buildInputs = [
@@ -67,6 +67,8 @@ stdenv.mkDerivation rec {
     # Upstream contact: maintainer is victorshoup on GitHub. Alternatively the
     # email listed on the homepage.
     homepage = http://www.shoup.net/ntl/;
+    # also locally at "${src}/doc/tour-changes.html";
+    changelog = "https://www.shoup.net/ntl/doc/tour-changes.html";
     maintainers = with maintainers; [ timokau ];
     license = licenses.gpl2Plus;
     platforms = platforms.all;
diff --git a/pkgs/development/python-modules/ansible-lint/default.nix b/pkgs/development/python-modules/ansible-lint/default.nix
index 757ece55ead7..62c9b33d5e30 100644
--- a/pkgs/development/python-modules/ansible-lint/default.nix
+++ b/pkgs/development/python-modules/ansible-lint/default.nix
@@ -18,6 +18,8 @@ buildPythonPackage rec {
     sha256 = "eb925d8682d70563ccb80e2aca7b3edf84fb0b768cea3edc6846aac7abdc414a";
   };
 
+  format = "pyproject";
+
   nativeBuildInputs = [ setuptools_scm ];
   propagatedBuildInputs = [ pyyaml six ansible ruamel_yaml ];
   checkInputs = [ nose ];
@@ -31,10 +33,11 @@ buildPythonPackage rec {
   # give a hint to setuptools_scm on package version
   preBuild = ''
     export SETUPTOOLS_SCM_PRETEND_VERSION="v${version}"
+    export HOME=$(mktemp -d)
   '';
 
   checkPhase = ''
-    PATH=$out/bin:$PATH HOME=$(mktemp -d) nosetests test
+    PATH=$out/bin:$PATH nosetests test
   '';
 
   meta = with lib; {
diff --git a/pkgs/development/tools/cargo-flamegraph/default.nix b/pkgs/development/tools/cargo-flamegraph/default.nix
index 442035d0f5f8..26b737f13a7b 100644
--- a/pkgs/development/tools/cargo-flamegraph/default.nix
+++ b/pkgs/development/tools/cargo-flamegraph/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, rustPlatform
+{ lib, stdenv, fetchFromGitHub, rustPlatform, makeWrapper, perf
 , Security
 }:
 
@@ -15,11 +15,19 @@ rustPlatform.buildRustPackage rec {
 
   cargoSha256 = "0kmw2n4j5bisac0bv3npbwfz2z00ncd6w8ichwaz5hac5mi1a72f";
 
-  buildInputs = stdenv.lib.optionals stdenv.isDarwin [
+  nativeBuildInputs = lib.optionals stdenv.isLinux [ makeWrapper ];
+  buildInputs = lib.optionals stdenv.isDarwin [
     Security
   ];
 
-  meta = with stdenv.lib; {
+  postFixup = lib.optionalString stdenv.isLinux ''
+    wrapProgram $out/bin/cargo-flamegraph \
+      --suffix PATH ':' ${perf}/bin
+    wrapProgram $out/bin/flamegraph \
+      --suffix PATH ':' ${perf}/bin
+  '';
+
+  meta = with lib; {
     description = "Easy flamegraphs for Rust projects and everything else, without Perl or pipes <3";
     homepage = https://github.com/ferrous-systems/flamegraph;
     license = with licenses; [ asl20 /* or */ mit ];
diff --git a/pkgs/development/tools/misc/micronucleus/default.nix b/pkgs/development/tools/misc/micronucleus/default.nix
new file mode 100644
index 000000000000..9fbafebb10c5
--- /dev/null
+++ b/pkgs/development/tools/misc/micronucleus/default.nix
@@ -0,0 +1,38 @@
+{
+  pkgs
+, stdenv
+, libusb
+, fetchFromGitHub
+, lib
+}:
+stdenv.mkDerivation rec {
+   pname = "micronucleus";
+   version = "2.04";
+
+   sourceRoot = "source/commandline";
+
+   src = fetchFromGitHub {
+     owner = "micronucleus";
+     repo = "micronucleus";
+     rev = version;
+     sha256 = "14msy9amlbflw5mqrbs57b7bby3nsgx43srr7215zyhfdgsla0in";
+   };
+
+   buildInputs = [ libusb ];
+   makeFlags = stdenv.lib.optionals stdenv.isDarwin [ "CC=cc" ];
+
+   installPhase = ''
+     mkdir -p $out/bin
+     mkdir -p $out/lib/udev
+     cp micronucleus $out/bin
+     cp 49-micronucleus.rules $out/lib/udev
+   '';
+
+   meta = with lib; {
+     description = "Upload tool for micronucleus";
+     homepage = "https://github.com/micronucleus/micronucleus";
+     license = licenses.gpl3;
+     maintainers = [ maintainers.cab404 ];
+   };
+
+}
diff --git a/pkgs/development/tools/misc/sysbench/default.nix b/pkgs/development/tools/misc/sysbench/default.nix
index 8feeb13db956..dbb8057292b3 100644
--- a/pkgs/development/tools/misc/sysbench/default.nix
+++ b/pkgs/development/tools/misc/sysbench/default.nix
@@ -4,7 +4,7 @@
 
 stdenv.mkDerivation rec {
   pname = "sysbench";
-  version = "1.0.18";
+  version = "1.0.19";
 
   nativeBuildInputs = [ autoreconfHook pkgconfig ];
   buildInputs = [ libmysqlclient libaio ];
@@ -13,7 +13,7 @@ stdenv.mkDerivation rec {
     owner = "akopytov";
     repo = pname;
     rev = version;
-    sha256 = "1r6lkyfp65xqklj1rdfw551srqqyak144agi8x3wjz3wmsbqls19";
+    sha256 = "1zgqb9cr7ld3vw4a3jhq1mlszhcyjlpr0c8q1jcp1d27l9dcvd1w";
   };
 
   enableParallelBuilding = true;
diff --git a/pkgs/development/tools/poetry/default.nix b/pkgs/development/tools/poetry/default.nix
new file mode 100644
index 000000000000..7843b1665f1c
--- /dev/null
+++ b/pkgs/development/tools/poetry/default.nix
@@ -0,0 +1,65 @@
+{ lib, poetry2nix, python, fetchFromGitHub, runtimeShell }:
+
+poetry2nix.mkPoetryApplication {
+
+  inherit python;
+
+  pyproject = ./pyproject.toml;
+  poetrylock = ./poetry.lock;
+
+  src = fetchFromGitHub {
+    owner = "sdispater";
+    repo = "poetry";
+    rev = "1.0.0";
+    sha256 = "05xlx9wnlrsjj3i4wawnvxadvqwsdh03401wpgingkbq0c50aimi";
+  };
+
+  # "Vendor" dependencies (for build-system support)
+  postPatch = ''
+    for path in ''${PYTHONPATH//:/ }; do
+      echo "sys.path.insert(0, \"$path\")" >> poetry/__init__.py
+    done
+  '';
+
+  # Poetry is a bit special in that it can't use itself as the `build-system` property in pyproject.toml.
+  # That's why we need to hackily install outputs completely manually.
+  #
+  # For projects using poetry normally overriding the installPhase is not required.
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/lib/${python.libPrefix}/site-packages
+    cp -r poetry $out/lib/${python.libPrefix}/site-packages
+
+    mkdir -p $out/bin
+    cat > $out/bin/poetry <<EOF
+    #!${runtimeShell}
+    export PYTHONPATH=$out/lib/${python.libPrefix}/site-packages:$PYTHONPATH
+    exec ${python.interpreter} -m poetry "\$@"
+    EOF
+    chmod +x $out/bin/poetry
+
+    mkdir -p "$out/share/bash-completion/completions"
+    "$out/bin/poetry" completions bash > "$out/share/bash-completion/completions/poetry"
+    mkdir -p "$out/share/zsh/vendor-completions"
+    "$out/bin/poetry" completions zsh > "$out/share/zsh/vendor-completions/_poetry"
+    mkdir -p "$out/share/fish/vendor_completions.d"
+    "$out/bin/poetry" completions fish > "$out/share/fish/vendor_completions.d/poetry.fish"
+
+    runHook postInstall
+  '';
+
+  # Propagating dependencies leads to issues downstream
+  # We've already patched poetry to prefer "vendored" dependencies
+  postFixup = ''
+    rm $out/nix-support/propagated-build-inputs
+  '';
+
+  # Fails because of impurities (network, git etc etc)
+  doCheck = false;
+
+  meta = with lib; {
+    platforms = platforms.all;
+    maintainers = with maintainers; [ adisbladis jakewaksbaum ];
+  };
+}
diff --git a/pkgs/development/tools/poetry/poetry.lock b/pkgs/development/tools/poetry/poetry.lock
new file mode 100644
index 000000000000..51fe6c42c7a9
--- /dev/null
+++ b/pkgs/development/tools/poetry/poetry.lock
@@ -0,0 +1,1886 @@
+[[package]]
+category = "dev"
+description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
+marker = "python_version >= \"3.6\" and python_version < \"4.0\""
+name = "appdirs"
+optional = false
+python-versions = "*"
+version = "1.4.3"
+
+[[package]]
+category = "dev"
+description = "A few extensions to pyyaml."
+name = "aspy.yaml"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "1.3.0"
+
+[package.dependencies]
+pyyaml = "*"
+
+[[package]]
+category = "dev"
+description = "Atomic file writes."
+name = "atomicwrites"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "1.3.0"
+
+[[package]]
+category = "main"
+description = "Classes Without Boilerplate"
+name = "attrs"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "19.3.0"
+
+[package.extras]
+azure-pipelines = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "pytest-azurepipelines"]
+dev = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface", "sphinx", "pre-commit"]
+docs = ["sphinx", "zope.interface"]
+tests = ["coverage", "hypothesis", "pympler", "pytest (>=4.3.0)", "six", "zope.interface"]
+
+[[package]]
+category = "dev"
+description = "The uncompromising code formatter."
+marker = "python_version >= \"3.6\" and python_version < \"4.0\""
+name = "black"
+optional = false
+python-versions = ">=3.6"
+version = "19.10b0"
+
+[package.dependencies]
+appdirs = "*"
+attrs = ">=18.1.0"
+click = ">=6.5"
+pathspec = ">=0.6,<1"
+regex = "*"
+toml = ">=0.9.4"
+typed-ast = ">=1.4.0"
+
+[package.extras]
+d = ["aiohttp (>=3.3.2)", "aiohttp-cors"]
+
+[[package]]
+category = "main"
+description = "httplib2 caching for requests"
+name = "cachecontrol"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "0.12.5"
+
+[package.dependencies]
+msgpack = "*"
+requests = "*"
+
+[package.dependencies.lockfile]
+optional = true
+version = ">=0.9"
+
+[package.extras]
+filecache = ["lockfile (>=0.9)"]
+redis = ["redis (>=2.10.5)"]
+
+[[package]]
+category = "main"
+description = "Cachy provides a simple yet effective caching library."
+name = "cachy"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "0.3.0"
+
+[package.extras]
+memcached = ["python-memcached (>=1.59,<2.0)"]
+msgpack = ["msgpack-python (>=0.5,<0.6)"]
+redis = ["redis (>=3.3.6,<4.0.0)"]
+
+[[package]]
+category = "main"
+description = "Python package for providing Mozilla's CA Bundle."
+name = "certifi"
+optional = false
+python-versions = "*"
+version = "2019.11.28"
+
+[[package]]
+category = "main"
+description = "Foreign Function Interface for Python calling C code."
+marker = "python_version >= \"2.7\" and python_version < \"2.8\" and (sys_platform == \"linux2\" or sys_platform == \"linux\") or python_version >= \"3.4\" and python_version < \"3.5\" and (sys_platform == \"linux2\" or sys_platform == \"linux\") or python_version >= \"3.5\" and python_version < \"4.0\" and sys_platform == \"linux\""
+name = "cffi"
+optional = false
+python-versions = "*"
+version = "1.13.2"
+
+[package.dependencies]
+pycparser = "*"
+
+[[package]]
+category = "dev"
+description = "Validate configuration and produce human readable error messages."
+name = "cfgv"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "2.0.1"
+
+[package.dependencies]
+six = "*"
+
+[[package]]
+category = "main"
+description = "Universal encoding detector for Python 2 and 3"
+name = "chardet"
+optional = false
+python-versions = "*"
+version = "3.0.4"
+
+[[package]]
+category = "main"
+description = "Cleo allows you to create beautiful and testable command-line interfaces."
+name = "cleo"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "0.7.6"
+
+[package.dependencies]
+clikit = ">=0.4.0,<0.5.0"
+
+[[package]]
+category = "dev"
+description = "Composable command line interface toolkit"
+marker = "python_version >= \"2.7.9\" and python_version < \"2.8.0\" or python_version >= \"3.4\" and python_version < \"4.0\" or python_version >= \"3.6\" and python_version < \"4.0\""
+name = "click"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "7.0"
+
+[[package]]
+category = "main"
+description = "CliKit is a group of utilities to build beautiful and testable command line interfaces."
+name = "clikit"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "0.4.1"
+
+[package.dependencies]
+pastel = ">=0.1.0,<0.2.0"
+pylev = ">=1.3,<2.0"
+
+[package.dependencies.enum34]
+python = ">=2.7,<2.8"
+version = ">=1.1,<2.0"
+
+[package.dependencies.typing]
+python = ">=2.7,<2.8 || >=3.4,<3.5"
+version = ">=3.6,<4.0"
+
+[[package]]
+category = "dev"
+description = "Cross-platform colored terminal text."
+marker = "sys_platform == \"win32\""
+name = "colorama"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "0.4.1"
+
+[[package]]
+category = "dev"
+description = "Cross-platform colored terminal text."
+marker = "sys_platform == \"win32\""
+name = "colorama"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+version = "0.4.3"
+
+[[package]]
+category = "main"
+description = "Updated configparser from Python 3.7 for Python 2.6+."
+marker = "python_version == \"2.7\" and python_version < \"2.8\" or python_version < \"3\""
+name = "configparser"
+optional = false
+python-versions = ">=2.6"
+version = "4.0.2"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=3.5,<3.7.3 || >3.7.3)", "pytest-checkdocs (>=1.2)", "pytest-flake8", "pytest-black-multipy"]
+
+[[package]]
+category = "main"
+description = "Backports and enhancements for the contextlib module"
+marker = "python_version < \"3\""
+name = "contextlib2"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "0.6.0.post1"
+
+[[package]]
+category = "dev"
+description = "Code coverage measurement for Python"
+name = "coverage"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*, <4"
+version = "4.5.4"
+
+[[package]]
+category = "main"
+description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
+marker = "python_version >= \"2.7\" and python_version < \"2.8\" and (sys_platform == \"linux2\" or sys_platform == \"linux\") or python_version >= \"3.4\" and python_version < \"3.5\" and (sys_platform == \"linux2\" or sys_platform == \"linux\") or python_version >= \"3.5\" and python_version < \"4.0\" and sys_platform == \"linux\""
+name = "cryptography"
+optional = false
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*"
+version = "2.8"
+
+[package.dependencies]
+cffi = ">=1.8,<1.11.3 || >1.11.3"
+six = ">=1.4.1"
+
+[package.dependencies.enum34]
+python = "<3"
+version = "*"
+
+[package.dependencies.ipaddress]
+python = "<3"
+version = "*"
+
+[package.extras]
+docs = ["sphinx (>=1.6.5,<1.8.0 || >1.8.0)", "sphinx-rtd-theme"]
+docstest = ["doc8", "pyenchant (>=1.6.11)", "twine (>=1.12.0)", "sphinxcontrib-spelling (>=4.0.1)"]
+idna = ["idna (>=2.1)"]
+pep8test = ["flake8", "flake8-import-order", "pep8-naming"]
+test = ["pytest (>=3.6.0,<3.9.0 || >3.9.0,<3.9.1 || >3.9.1,<3.9.2 || >3.9.2)", "pretend", "iso8601", "pytz", "hypothesis (>=1.11.4,<3.79.2 || >3.79.2)"]
+
+[[package]]
+category = "main"
+description = "Discover and load entry points from installed packages."
+marker = "python_version >= \"2.7\" and python_version < \"2.8\" or python_version >= \"3.4\" and python_version < \"3.5\""
+name = "entrypoints"
+optional = false
+python-versions = ">=2.7"
+version = "0.3"
+
+[package.dependencies]
+[package.dependencies.configparser]
+python = ">=2.7,<2.8"
+version = ">=3.5"
+
+[[package]]
+category = "main"
+description = "Python 3.4 Enum backported to 3.3, 3.2, 3.1, 2.7, 2.6, 2.5, and 2.4"
+marker = "python_version >= \"2.7\" and python_version < \"2.8\" or python_version >= \"2.7\" and python_version < \"2.8\" and (sys_platform == \"linux2\" or sys_platform == \"linux\")"
+name = "enum34"
+optional = false
+python-versions = "*"
+version = "1.1.6"
+
+[[package]]
+category = "dev"
+description = "A platform independent file lock."
+name = "filelock"
+optional = false
+python-versions = "*"
+version = "3.0.12"
+
+[[package]]
+category = "dev"
+description = "Python function signatures from PEP362 for Python 2.6, 2.7 and 3.2+"
+marker = "python_version < \"3.0\""
+name = "funcsigs"
+optional = false
+python-versions = "*"
+version = "1.0.2"
+
+[[package]]
+category = "main"
+description = "Backport of the functools module from Python 3.2.3 for use on 2.7 and PyPy."
+marker = "python_version >= \"2.7\" and python_version < \"2.8\" or python_version < \"3\""
+name = "functools32"
+optional = false
+python-versions = "*"
+version = "3.2.3-2"
+
+[[package]]
+category = "dev"
+description = "Backport of the concurrent.futures package from Python 3"
+marker = "python_version < \"3.2\""
+name = "futures"
+optional = false
+python-versions = ">=2.6, <3"
+version = "3.3.0"
+
+[[package]]
+category = "main"
+description = "Version of the glob module that can capture patterns and supports recursive wildcards"
+marker = "python_version >= \"2.7\" and python_version < \"2.8\" or python_version >= \"3.4\" and python_version < \"3.5\""
+name = "glob2"
+optional = false
+python-versions = "*"
+version = "0.6"
+
+[[package]]
+category = "main"
+description = "HTML parser based on the WHATWG HTML specification"
+name = "html5lib"
+optional = false
+python-versions = "*"
+version = "1.0.1"
+
+[package.dependencies]
+six = ">=1.9"
+webencodings = "*"
+
+[package.extras]
+all = ["genshi", "chardet (>=2.2)", "datrie", "lxml"]
+chardet = ["chardet (>=2.2)"]
+datrie = ["datrie"]
+genshi = ["genshi"]
+lxml = ["lxml"]
+
+[[package]]
+category = "dev"
+description = "HTTP client mock for Python"
+name = "httpretty"
+optional = false
+python-versions = "*"
+version = "0.9.7"
+
+[package.dependencies]
+six = "*"
+
+[[package]]
+category = "dev"
+description = "File identification library for Python"
+name = "identify"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,>=2.7"
+version = "1.4.8"
+
+[package.extras]
+license = ["editdistance"]
+
+[[package]]
+category = "main"
+description = "Internationalized Domain Names in Applications (IDNA)"
+name = "idna"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*"
+version = "2.8"
+
+[[package]]
+category = "main"
+description = "Read metadata from Python packages"
+name = "importlib-metadata"
+optional = false
+python-versions = ">=2.7,!=3.0,!=3.1,!=3.2,!=3.3"
+version = "0.23"
+
+[package.dependencies]
+zipp = ">=0.5"
+
+[package.dependencies.configparser]
+python = "<3"
+version = ">=3.5"
+
+[package.dependencies.contextlib2]
+python = "<3"
+version = "*"
+
+[package.extras]
+docs = ["sphinx", "rst.linker"]
+testing = ["packaging", "importlib-resources"]
+
+[[package]]
+category = "dev"
+description = "Read resources from Python packages"
+marker = "python_version < \"3.7\""
+name = "importlib-resources"
+optional = false
+python-versions = ">=2.7,!=3.0,!=3.1,!=3.2,!=3.3"
+version = "1.0.2"
+
+[package.dependencies]
+[package.dependencies.pathlib2]
+python = "<3"
+version = "*"
+
+[package.dependencies.typing]
+python = "<3.5"
+version = "*"
+
+[[package]]
+category = "main"
+description = "IPv4/IPv6 manipulation library"
+marker = "python_version >= \"2.7\" and python_version < \"2.8\" and (sys_platform == \"linux2\" or sys_platform == \"linux\")"
+name = "ipaddress"
+optional = false
+python-versions = "*"
+version = "1.0.23"
+
+[[package]]
+category = "main"
+description = "Low-level, pure Python DBus protocol wrapper."
+marker = "python_version >= \"3.5\" and python_version < \"4.0\" and sys_platform == \"linux\""
+name = "jeepney"
+optional = false
+python-versions = ">=3.5"
+version = "0.4.1"
+
+[package.extras]
+dev = ["testpath"]
+
+[[package]]
+category = "dev"
+description = "A very fast and expressive template engine."
+marker = "python_version >= \"2.7.9\" and python_version < \"2.8.0\" or python_version >= \"3.4\" and python_version < \"4.0\""
+name = "jinja2"
+optional = false
+python-versions = "*"
+version = "2.10.3"
+
+[package.dependencies]
+MarkupSafe = ">=0.23"
+
+[package.extras]
+i18n = ["Babel (>=0.8)"]
+
+[[package]]
+category = "main"
+description = "An implementation of JSON Schema validation for Python"
+name = "jsonschema"
+optional = false
+python-versions = "*"
+version = "3.2.0"
+
+[package.dependencies]
+attrs = ">=17.4.0"
+pyrsistent = ">=0.14.0"
+setuptools = "*"
+six = ">=1.11.0"
+
+[package.dependencies.functools32]
+python = "<3"
+version = "*"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = "*"
+
+[package.extras]
+format = ["idna", "jsonpointer (>1.13)", "rfc3987", "strict-rfc3339", "webcolors"]
+format_nongpl = ["idna", "jsonpointer (>1.13)", "webcolors", "rfc3986-validator (>0.1.0)", "rfc3339-validator"]
+
+[[package]]
+category = "main"
+description = "Store and access your passwords safely."
+marker = "python_version >= \"2.7\" and python_version < \"2.8\" or python_version >= \"3.4\" and python_version < \"3.5\""
+name = "keyring"
+optional = false
+python-versions = ">=2.7"
+version = "18.0.1"
+
+[package.dependencies]
+entrypoints = "*"
+pywin32-ctypes = "<0.1.0 || >0.1.0,<0.1.1 || >0.1.1"
+
+[package.dependencies.secretstorage]
+python = "<3.5"
+version = "<3"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=3.5,<3.7.3 || >3.7.3)", "pytest-checkdocs", "pytest-flake8"]
+
+[[package]]
+category = "main"
+description = "Store and access your passwords safely."
+marker = "python_version >= \"3.5\" and python_version < \"4.0\""
+name = "keyring"
+optional = false
+python-versions = ">=3.5"
+version = "19.3.0"
+
+[package.dependencies]
+pywin32-ctypes = "<0.1.0 || >0.1.0,<0.1.1 || >0.1.1"
+secretstorage = "*"
+
+[package.dependencies.importlib-metadata]
+python = "<3.8"
+version = "*"
+
+[package.extras]
+docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
+testing = ["pytest (>=3.5,<3.7.3 || >3.7.3)", "pytest-checkdocs (>=1.2.3)", "pytest-flake8", "pytest-black-multipy", "pytest-cov"]
+
+[[package]]
+category = "dev"
+description = "Python LiveReload is an awesome tool for web developers"
+marker = "python_version >= \"2.7.9\" and python_version < \"2.8.0\" or python_version >= \"3.4\" and python_version < \"4.0\""
+name = "livereload"
+optional = false
+python-versions = "*"
+version = "2.6.1"
+
+[package.dependencies]
+six = "*"
+tornado = "*"
+
+[[package]]
+category = "main"
+description = "Platform-independent file locking module"
+name = "lockfile"
+optional = false
+python-versions = "*"
+version = "0.12.2"
+
+[[package]]
+category = "dev"
+description = "Python implementation of Markdown."
+name = "markdown"
+optional = false
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*"
+version = "3.0.1"
+
+[[package]]
+category = "dev"
+description = "Python implementation of Markdown."
+name = "markdown"
+optional = false
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*"
+version = "3.1.1"
+
+[package.dependencies]
+setuptools = ">=36"
+
+[package.extras]
+testing = ["coverage", "pyyaml"]
+
+[[package]]
+category = "dev"
+description = "This is an extension to Python-Markdown which provides an \"include\" function, similar to that found in LaTeX (and also the C pre-processor and Fortran). I originally wrote it for my FORD Fortran auto-documentation generator."
+name = "markdown-include"
+optional = false
+python-versions = "*"
+version = "0.5.1"
+
+[package.dependencies]
+markdown = "*"
+
+[[package]]
+category = "dev"
+description = "Safely add untrusted strings to HTML/XML markup."
+marker = "python_version >= \"2.7.9\" and python_version < \"2.8.0\" or python_version >= \"3.4\" and python_version < \"4.0\""
+name = "markupsafe"
+optional = false
+python-versions = ">=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*"
+version = "1.1.1"
+
+[[package]]
+category = "dev"
+description = "Project documentation with Markdown."
+marker = "python_version >= \"2.7.9\" and python_version < \"2.8.0\" or python_version >= \"3.4\" and python_version < \"4.0\""
+name = "mkdocs"
+optional = false
+python-versions = ">=2.7.9,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*"
+version = "1.0.4"
+
+[package.dependencies]
+Jinja2 = ">=2.7.1"
+Markdown = ">=2.3.1"
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+    {file = "zipp-0.6.0.tar.gz", hash = "sha256:3718b1cbcd963c7d4c5511a8240812904164b7f381b647143a89d3b98f9bcd8e"},
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diff --git a/pkgs/development/tools/poetry/pyproject.toml b/pkgs/development/tools/poetry/pyproject.toml
new file mode 100644
index 000000000000..2aea5026835e
--- /dev/null
+++ b/pkgs/development/tools/poetry/pyproject.toml
@@ -0,0 +1,118 @@
+[tool.poetry]
+name = "poetry"
+version = "1.0.0"
+description = "Python dependency management and packaging made easy."
+authors = [
+    "Sébastien Eustace <sebastien@eustace.io>"
+]
+license = "MIT"
+
+readme = "README.md"
+
+homepage = "https://python-poetry.org/"
+repository = "https://github.com/python-poetry/poetry"
+documentation = "https://python-poetry.org/docs"
+
+keywords = ["packaging", "dependency", "poetry"]
+
+classifiers = [
+    "Topic :: Software Development :: Build Tools",
+    "Topic :: Software Development :: Libraries :: Python Modules"
+]
+
+# Requirements
+[tool.poetry.dependencies]
+python = "~2.7 || ^3.4"
+cleo = "^0.7.6"
+clikit = "^0.4.1"
+requests = "^2.18"
+cachy = "^0.3.0"
+requests-toolbelt = "^0.8.0"
+jsonschema = "^3.1"
+pyrsistent = "^0.14.2"
+pyparsing = "^2.2"
+cachecontrol = { version = "^0.12.4", extras = ["filecache"] }
+pkginfo = "^1.4"
+html5lib = "^1.0"
+shellingham = "^1.1"
+tomlkit = "^0.5.8"
+pexpect = "^4.7.0"
+
+# The typing module is not in the stdlib in Python 2.7 and 3.4
+typing = { version = "^3.6", python = "~2.7 || ~3.4" }
+
+# Use pathlib2 for Python 2.7 and 3.4
+pathlib2 = { version = "^2.3", python = "~2.7 || ~3.4" }
+# Use glob2 for Python 2.7 and 3.4
+glob2 = { version = "^0.6", python = "~2.7 || ~3.4" }
+# Use virtualenv for Python 2.7 since venv does not exist
+virtualenv = { version = "^16.0", python = "~2.7" }
+# functools32 is needed for Python 2.7
+functools32 = { version = "^3.2.3", python = "~2.7" }
+keyring = [
+    { version = "^18.0", python = "~2.7 || ~3.4" },
+    { version = "^19.0", python = "^3.5" }
+]
+# Use subprocess32 for Python 2.7 and 3.4
+subprocess32 = { version = "^3.5", python = "~2.7 || ~3.4" }
+importlib-metadata = {version = "^0.23", python = "<3.8"}
+
+[tool.poetry.dev-dependencies]
+pytest = "^4.1"
+pytest-cov = "^2.5"
+mkdocs = { version = "^1.0", python = "~2.7.9 || ^3.4" }
+pymdown-extensions = "^6.0"
+pygments = "^2.2"
+pytest-mock = "^1.9"
+pygments-github-lexers = "^0.0.5"
+black = { version = "^19.10b0", python = "^3.6" }
+pre-commit = "^1.10"
+tox = "^3.0"
+pytest-sugar = "^0.9.2"
+httpretty = "^0.9.6"
+markdown-include = "^0.5.1"
+
+[tool.poetry.scripts]
+poetry = "poetry.console:main"
+
+
+[build-system]
+requires = ["intreehooks"]
+build-backend = "intreehooks:loader"
+
+[tool.intreehooks]
+build-backend = "poetry.masonry.api"
+
+
+[tool.isort]
+line_length = 88
+force_single_line = true
+atomic = true
+include_trailing_comma = true
+lines_after_imports = 2
+lines_between_types = 1
+multi_line_output = 3
+use_parentheses = true
+not_skip = "__init__.py"
+skip_glob = ["*/setup.py"]
+filter_files = true
+
+known_first_party = "poetry"
+known_third_party = [
+    "cachecontrol",
+    "cachy",
+    "cleo",
+    "clikit",
+    "html5lib",
+    "httpretty",
+    "jsonschema",
+    "keyring",
+    "pexpect",
+    "pkginfo",
+    "pyparsing",
+    "pytest",
+    "requests",
+    "requests_toolbelt",
+    "shellingham",
+    "tomlkit",
+]
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/README.md b/pkgs/development/tools/poetry2nix/poetry2nix/README.md
new file mode 100644
index 000000000000..ac4861534f58
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/README.md
@@ -0,0 +1,6 @@
+Dont change these files here, they are maintained at https://github.com/nix-community/poetry2nix
+
+The update procedure is as-follows:
+1. Send your change to the upstream poetry2nix repository
+2. Get it approved with tests passing
+3. Run the update script in pkgs/development/tools/poetry2nix
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/bin/poetry2nix b/pkgs/development/tools/poetry2nix/poetry2nix/bin/poetry2nix
new file mode 100755
index 000000000000..95576b987f5c
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/bin/poetry2nix
@@ -0,0 +1,98 @@
+#!/usr/bin/env python
+from concurrent.futures import ThreadPoolExecutor
+import subprocess
+import textwrap
+import argparse
+import toml
+import json
+import sys
+
+
+argparser = argparse.ArgumentParser(description="Generate overrides for git hashes",)
+argparser.add_argument(
+    "--lock", default="poetry.lock", help="Path to input poetry.lock",
+)
+argparser.add_argument(
+    "--out", default="poetry-git-overlay.nix", help="Output file",
+)
+
+
+def fetch_git(pkg):
+    return (
+        pkg["name"],
+        subprocess.run(
+            [
+                "nix-prefetch-git",
+                "--fetch-submodules",
+                "--url",
+                pkg["source"]["url"],
+                "--rev",
+                pkg["source"]["reference"],
+            ],
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+        ),
+    )
+
+
+def indent(expr, spaces=2):
+    i = " " * spaces
+    return "\n".join([(i if l != "" else "") + l for l in expr.split("\n")])
+
+
+if __name__ == "__main__":
+    args = argparser.parse_args()
+
+    with open(args.lock) as lockf:
+        lock = toml.load(lockf)
+
+    pkgs = []
+    for pkg in lock["package"]:
+        if "source" in pkg:
+            pkgs.append(pkg)
+
+    with ThreadPoolExecutor() as e:
+        futures = []
+
+        for pkg in pkgs:
+            futures.append(e.submit(fetch_git, pkg))
+
+        lines = [
+            "{ pkgs }:",
+            "self: super: {",
+        ]
+
+        for f in futures:
+            drv_name, p = f.result()
+            if p.returncode != 0:
+                sys.stderr.buffer.write(p.stderr)
+                sys.stderr.buffer.flush()
+                exit(p.returncode)
+
+            meta = json.loads(p.stdout.decode())
+            lines.append(
+                indent(
+                    textwrap.dedent(
+                        """
+              %s = super.%s.overrideAttrs (
+                _: {
+                  src = pkgs.fetchgit {
+                    url = "%s";
+                    rev = "%s";
+                    sha256 = "%s";
+                  };
+                }
+              );"""
+                        % (drv_name, drv_name, meta["url"], meta["rev"], meta["sha256"])
+                    )
+                )
+            )
+
+        lines.extend(["", "}", ""])
+
+        expr = "\n".join(lines)
+
+    with open(args.out, "w") as f:
+        f.write(expr)
+
+    print(f"Wrote {args.out}")
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/cli.nix b/pkgs/development/tools/poetry2nix/poetry2nix/cli.nix
new file mode 100644
index 000000000000..82759ce7174b
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/cli.nix
@@ -0,0 +1,52 @@
+{ pkgs ? import <nixpkgs> {}
+, lib ? pkgs.lib
+, version
+}:
+
+let
+  inherit (pkgs) python3;
+
+in
+pkgs.stdenv.mkDerivation {
+  pname = "poetry2nix";
+  inherit version;
+
+  buildInputs = [
+    (python3.withPackages (ps: [ ps.toml ]))
+  ];
+
+  nativeBuildInputs = [
+    pkgs.makeWrapper
+  ];
+
+  src = ./bin;
+
+  dontConfigure = true;
+
+  buildPhase = ''
+    runHook preBuild
+    ${python3.pkgs.black}/bin/black --quiet --check poetry2nix
+    patchShebangs poetry2nix
+    runHook postBuild
+  '';
+
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/bin
+    mv poetry2nix $out/bin
+
+    wrapProgram $out/bin/poetry2nix --prefix PATH ":" ${lib.makeBinPath [
+    pkgs.nix-prefetch-git
+  ]}
+
+    runHook postInstall
+  '';
+
+  meta = {
+    homepage = "https://github.com/nix-community/poetry2nix";
+    description = "CLI to supplement sha256 hashes for git dependencies";
+    license = lib.licenses.mit;
+    maintainers = [ lib.maintainers.adisbladis ];
+  };
+
+}
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/default.nix b/pkgs/development/tools/poetry2nix/poetry2nix/default.nix
new file mode 100644
index 000000000000..967f0d666cb4
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/default.nix
@@ -0,0 +1,252 @@
+{ pkgs ? import <nixpkgs> {}
+, lib ? pkgs.lib
+, poetry ? null
+, poetryLib ? import ./lib.nix { inherit lib pkgs; }
+}:
+
+let
+  inherit (poetryLib) isCompatible readTOML;
+
+  # Poetry2nix version
+  version = "1.1.0";
+
+  /* The default list of poetry2nix override overlays */
+  defaultPoetryOverrides = (import ./overrides.nix { inherit pkgs lib; });
+
+  mkEvalPep508 = import ./pep508.nix {
+    inherit lib;
+    stdenv = pkgs.stdenv;
+  };
+
+  getFunctorFn = fn: if builtins.typeOf fn == "set" then fn.__functor else fn;
+
+  getAttrDefault = attribute: set: default: (
+    if builtins.hasAttr attribute set
+    then builtins.getAttr attribute set
+    else default
+  );
+
+  # Map SPDX identifiers to license names
+  spdxLicenses = lib.listToAttrs (lib.filter (pair: pair.name != null) (builtins.map (v: { name = if lib.hasAttr "spdxId" v then v.spdxId else null; value = v; }) (lib.attrValues lib.licenses)));
+  # Get license by id falling back to input string
+  getLicenseBySpdxId = spdxId: getAttrDefault spdxId spdxLicenses spdxId;
+
+  #
+  # Returns an attrset { python, poetryPackages } for the given lockfile
+  #
+  mkPoetryPython =
+    { poetrylock
+    , poetryPkg
+    , overrides ? [ defaultPoetryOverrides ]
+    , meta ? {}
+    , python ? pkgs.python3
+    , pwd ? null
+    }@attrs: let
+      lockData = readTOML poetrylock;
+      lockFiles = lib.getAttrFromPath [ "metadata" "files" ] lockData;
+
+      specialAttrs = [ "poetrylock" "overrides" ];
+      passedAttrs = builtins.removeAttrs attrs specialAttrs;
+
+      evalPep508 = mkEvalPep508 python;
+
+      # Filter packages by their PEP508 markers
+      partitions = let
+        supportsPythonVersion = pkgMeta: if pkgMeta ? marker then (evalPep508 pkgMeta.marker) else true;
+      in
+        lib.partition supportsPythonVersion lockData.package;
+
+      compatible = partitions.right;
+      incompatible = partitions.wrong;
+
+      # Create an overriden version of pythonPackages
+      #
+      # We need to avoid mixing multiple versions of pythonPackages in the same
+      # closure as python can only ever have one version of a dependency
+      baseOverlay = self: super:
+        let
+          getDep = depName: if builtins.hasAttr depName self then self."${depName}" else throw "foo";
+
+          lockPkgs = builtins.listToAttrs (
+            builtins.map (
+              pkgMeta: rec {
+                name = pkgMeta.name;
+                value = self.mkPoetryDep (
+                  pkgMeta // {
+                    inherit pwd;
+                    source = getAttrDefault "source" pkgMeta null;
+                    files = lockFiles.${name};
+                    pythonPackages = self;
+                  }
+                );
+              }
+            ) compatible
+          );
+        in
+          lockPkgs;
+
+      overlays = builtins.map getFunctorFn (
+        [
+          (
+            self: super: {
+              mkPoetryDep = self.callPackage ./mk-poetry-dep.nix {
+                inherit pkgs lib python poetryLib;
+              };
+              poetry = poetryPkg;
+            }
+          )
+          # Null out any filtered packages, we don't want python.pkgs from nixpkgs
+          (self: super: builtins.listToAttrs (builtins.map (x: { name = x.name; value = null; }) incompatible))
+          # Create poetry2nix layer
+          baseOverlay
+        ] ++ # User provided overrides
+        overrides
+      );
+
+      packageOverrides = lib.foldr lib.composeExtensions (self: super: {}) overlays;
+
+      py = python.override { inherit packageOverrides; self = py; };
+    in
+      {
+        python = py;
+        poetryPackages = map (pkg: py.pkgs.${pkg.name}) compatible;
+      };
+
+  /* Returns a package with a python interpreter and all packages specified in the poetry.lock lock file.
+
+     Example:
+       poetry2nix.mkPoetryEnv { poetrylock = ./poetry.lock; python = python3; }
+  */
+  mkPoetryEnv =
+    { poetrylock
+    , overrides ? [ defaultPoetryOverrides ]
+    , meta ? {}
+    , pwd ? null
+    , python ? pkgs.python3
+    }:
+      let
+        poetryPkg = poetry.override { inherit python; };
+        py = mkPoetryPython (
+          {
+            inherit poetryPkg poetrylock overrides meta python pwd;
+          }
+        );
+      in
+        py.python.withPackages (_: py.poetryPackages);
+
+  /* Creates a Python application from pyproject.toml and poetry.lock */
+  mkPoetryApplication =
+    { src
+    , pyproject
+    , poetrylock
+    , overrides ? [ defaultPoetryOverrides ]
+    , meta ? {}
+    , python ? pkgs.python3
+    , pwd ? null
+    , ...
+    }@attrs: let
+      poetryPkg = poetry.override { inherit python; };
+
+      py = (
+        mkPoetryPython {
+          inherit poetryPkg poetrylock overrides meta python pwd;
+        }
+      ).python;
+
+      pyProject = readTOML pyproject;
+
+      specialAttrs = [ "pyproject" "poetrylock" "overrides" ];
+      passedAttrs = builtins.removeAttrs attrs specialAttrs;
+
+      getDeps = depAttr: let
+        deps = getAttrDefault depAttr pyProject.tool.poetry {};
+        depAttrs = builtins.map (d: lib.toLower d) (builtins.attrNames deps);
+      in
+        builtins.map (dep: py.pkgs."${dep}") depAttrs;
+
+      getInputs = attr: getAttrDefault attr attrs [];
+      mkInput = attr: extraInputs: getInputs attr ++ extraInputs;
+
+      buildSystemPkgs = poetryLib.getBuildSystemPkgs {
+        inherit pyProject;
+        pythonPackages = py.pkgs;
+      };
+
+    in
+      py.pkgs.buildPythonApplication (
+        passedAttrs // {
+          pname = pyProject.tool.poetry.name;
+          version = pyProject.tool.poetry.version;
+
+          format = "pyproject";
+
+          nativeBuildInputs = [ pkgs.yj ];
+          buildInputs = mkInput "buildInputs" buildSystemPkgs;
+          propagatedBuildInputs = mkInput "propagatedBuildInputs" (getDeps "dependencies") ++ ([ py.pkgs.setuptools ]);
+          checkInputs = mkInput "checkInputs" (getDeps "dev-dependencies");
+
+          passthru = {
+            python = py;
+          };
+
+          postPatch = (getAttrDefault "postPatch" passedAttrs "") + ''
+            # Tell poetry not to resolve the path dependencies. Any version is
+            # fine !
+            yj -tj < pyproject.toml | python ${./pyproject-without-path.py} > pyproject.json
+            yj -jt < pyproject.json > pyproject.toml
+            rm pyproject.json
+          '';
+
+          meta = meta // {
+            inherit (pyProject.tool.poetry) description homepage;
+            license = getLicenseBySpdxId (getAttrDefault "license" pyProject.tool.poetry "unknown");
+          };
+
+        }
+      );
+
+  /* Poetry2nix CLI used to supplement SHA-256 hashes for git dependencies  */
+  cli = import ./cli.nix { inherit pkgs lib version; };
+
+  /* Poetry2nix documentation  */
+  doc = pkgs.stdenv.mkDerivation {
+    pname = "poetry2nix-docs";
+    inherit version;
+
+    src = pkgs.runCommandNoCC "poetry2nix-docs-src" {} ''
+      mkdir -p $out
+      cp ${./default.nix} $out/default.nix
+    '';
+
+    buildInputs = [
+      pkgs.nixdoc
+    ];
+
+    buildPhase = ''
+      nixdoc --category poetry2nix --description "Poetry2nix functions" --file ./default.nix > poetry2nix.xml
+    '';
+
+    installPhase = ''
+      mkdir -p $out
+      cp poetry2nix.xml $out/
+    '';
+
+  };
+
+in
+{
+  inherit mkPoetryEnv mkPoetryApplication cli doc;
+
+  /*
+  The default list of poetry2nix override overlays
+
+  Can be overriden by calling defaultPoetryOverrides.overrideOverlay which takes an overlay function
+  */
+  defaultPoetryOverrides = {
+    __functor = defaultPoetryOverrides;
+    overrideOverlay = fn: self: super: let
+      defaultSet = defaultPoetryOverrides self super;
+      customSet = fn self super;
+    in defaultSet // customSet;
+  };
+}
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/extensions.json b/pkgs/development/tools/poetry2nix/poetry2nix/extensions.json
new file mode 100644
index 000000000000..2cce8e2ea085
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/extensions.json
@@ -0,0 +1,14 @@
+[
+  "tar",
+  "tar.bz2",
+  "tar.gz",
+  "tar.lz",
+  "tar.lzma",
+  "tar.xz",
+  "tbz",
+  "tgz",
+  "tlz",
+  "txz",
+  "whl",
+  "zip"
+]
\ No newline at end of file
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/lib.nix b/pkgs/development/tools/poetry2nix/poetry2nix/lib.nix
new file mode 100644
index 000000000000..9ec76defb7da
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/lib.nix
@@ -0,0 +1,79 @@
+{ lib, pkgs }:
+let
+  inherit (import ./semver.nix { inherit lib; }) satisfiesSemver;
+
+  # Returns true if pythonVersion matches with the expression in pythonVersions
+  isCompatible = pythonVersion: pythonVersions:
+    let
+      operators = {
+        "||" = cond1: cond2: cond1 || cond2;
+        "," = cond1: cond2: cond1 && cond2; # , means &&
+      };
+      # split string at "," and "||"
+      tokens = builtins.filter (x: x != "") (builtins.split "(,|\\|\\|)" pythonVersions);
+      combine = acc: v:
+        let
+          isOperator = builtins.typeOf v == "list";
+          operator = if isOperator then (builtins.elemAt v 0) else acc.operator;
+        in
+          if isOperator then (acc // { inherit operator; }) else {
+            inherit operator;
+            state = operators."${operator}" acc.state (satisfiesSemver pythonVersion v);
+          };
+      initial = { operator = ","; state = true; };
+    in
+      (builtins.foldl' combine initial tokens).state;
+
+  readTOML = path: builtins.fromTOML (builtins.readFile path);
+
+  #
+  # Returns the appropriate manylinux dependencies and string representation for the file specified
+  #
+  getManyLinuxDeps = f:
+    let
+      ml = pkgs.pythonManylinuxPackages;
+    in
+      if lib.strings.hasInfix "manylinux1" f then { pkg = [ ml.manylinux1 ]; str = "1"; }
+      else if lib.strings.hasInfix "manylinux2010" f then { pkg = [ ml.manylinux2010 ]; str = "2010"; }
+      else if lib.strings.hasInfix "manylinux2014" f then { pkg = [ ml.manylinux2014 ]; str = "2014"; }
+      else { pkg = []; str = null; };
+
+  # Fetch the artifacts from the PyPI index. Since we get all
+  # info we need from the lock file we don't use nixpkgs' fetchPyPi
+  # as it modifies casing while not providing anything we don't already
+  # have.
+  #
+  # Args:
+  #   pname: package name
+  #   file: filename including extension
+  #   hash: SRI hash
+  #   kind: Language implementation and version tag https://www.python.org/dev/peps/pep-0427/#file-name-convention
+  fetchFromPypi = lib.makeOverridable (
+    { pname, file, hash, kind }:
+      pkgs.fetchurl {
+        url = "https://files.pythonhosted.org/packages/${kind}/${lib.toLower (builtins.substring 0 1 file)}/${pname}/${file}";
+        inherit hash;
+      }
+  );
+
+  getBuildSystemPkgs =
+    { pythonPackages
+    , pyProject
+    }: let
+      buildSystem = lib.getAttrFromPath [ "build-system" "build-backend" ] pyProject;
+      drvAttr = builtins.elemAt (builtins.split "\\.|:" buildSystem) 0;
+    in
+      if buildSystem == "" then [] else (
+        [ pythonPackages.${drvAttr} or (throw "unsupported build system ${buildSystem}") ]
+      );
+
+in
+{
+  inherit
+    fetchFromPypi
+    getManyLinuxDeps
+    isCompatible
+    readTOML
+    getBuildSystemPkgs
+    ;
+}
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/mk-poetry-dep.nix b/pkgs/development/tools/poetry2nix/poetry2nix/mk-poetry-dep.nix
new file mode 100644
index 000000000000..3631cbd228ea
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/mk-poetry-dep.nix
@@ -0,0 +1,100 @@
+{ autoPatchelfHook
+, pkgs
+, lib
+, python
+, buildPythonPackage
+, pythonPackages
+, poetryLib
+}:
+{ name
+, version
+, files
+, source
+, dependencies ? {}
+, pythonPackages
+, python-versions
+, pwd
+, supportedExtensions ? lib.importJSON ./extensions.json
+, ...
+}: let
+
+  inherit (poetryLib) isCompatible getManyLinuxDeps fetchFromPypi;
+
+  inherit (import ./pep425.nix {
+    inherit lib python;
+    inherit (pkgs) stdenv;
+  }) selectWheel
+    ;
+
+  fileCandidates = let
+    supportedRegex = ("^.*?(" + builtins.concatStringsSep "|" supportedExtensions + ")");
+    matchesVersion = fname: builtins.match ("^.*" + builtins.replaceStrings [ "." ] [ "\\." ] version + ".*$") fname != null;
+    hasSupportedExtension = fname: builtins.match supportedRegex fname != null;
+  in
+    builtins.filter (f: matchesVersion f.file && hasSupportedExtension f.file) files;
+
+  toPath = s: pwd + "/${s}";
+
+  isSource = source != null;
+  isGit = isSource && source.type == "git";
+  isLocal = isSource && source.type == "directory";
+
+  localDepPath = toPath source.url;
+  pyProject = poetryLib.readTOML (localDepPath + "/pyproject.toml");
+
+  buildSystemPkgs = poetryLib.getBuildSystemPkgs {
+    inherit pythonPackages pyProject;
+  };
+
+  fileInfo = let
+    isBdist = f: lib.strings.hasSuffix "whl" f.file;
+    isSdist = f: ! isBdist f;
+    binaryDist = selectWheel fileCandidates;
+    sourceDist = builtins.filter isSdist fileCandidates;
+    lockFileEntry = if (builtins.length sourceDist) > 0 then builtins.head sourceDist else builtins.head binaryDist;
+  in
+    rec {
+      inherit (lockFileEntry) file hash;
+      name = file;
+      format = if lib.strings.hasSuffix ".whl" name then "wheel" else "setuptools";
+      kind = if format == "setuptools" then "source" else (builtins.elemAt (lib.strings.splitString "-" name) 2);
+    };
+
+in
+buildPythonPackage {
+  pname = name;
+  version = version;
+
+  doCheck = false; # We never get development deps
+  dontStrip = true;
+  format = if isLocal then "pyproject" else if isGit then "setuptools" else fileInfo.format;
+
+  nativeBuildInputs = if (!isSource && (getManyLinuxDeps fileInfo.name).str != null) then [ autoPatchelfHook ] else [];
+  buildInputs = if !isSource then (getManyLinuxDeps fileInfo.name).pkg else [];
+
+  propagatedBuildInputs =
+    let
+      # Some dependencies like django gets the attribute name django
+      # but dependencies try to access Django
+      deps = builtins.map (d: lib.toLower d) (builtins.attrNames dependencies);
+    in
+      (builtins.map (n: pythonPackages.${n}) deps) ++ (if isLocal then buildSystemPkgs else []);
+
+  meta = {
+    broken = ! isCompatible python.version python-versions;
+    license = [];
+  };
+
+  # We need to retrieve kind from the interpreter and the filename of the package
+  # Interpreters should declare what wheel types they're compatible with (python type + ABI)
+  # Here we can then choose a file based on that info.
+  src = if isGit then (
+    builtins.fetchGit {
+      inherit (source) url;
+      rev = source.reference;
+    }
+  ) else if isLocal then (localDepPath) else fetchFromPypi {
+    pname = name;
+    inherit (fileInfo) file hash kind;
+  };
+}
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/overrides.nix b/pkgs/development/tools/poetry2nix/poetry2nix/overrides.nix
new file mode 100644
index 000000000000..84d77cef3b5a
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/overrides.nix
@@ -0,0 +1,405 @@
+{ pkgs ? import <nixpkgs> {}
+, lib ? pkgs.lib
+, stdenv ? pkgs.stdenv
+}:
+
+self: super:
+
+let
+
+  addSetupTools = drv: if drv == null then null else drv.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [
+        self.setuptools_scm
+      ];
+    }
+  );
+
+  getAttrDefault = attribute: set: default:
+    if builtins.hasAttr attribute set
+    then builtins.getAttr attribute set
+    else default;
+
+in
+{
+
+  asciimatics = super.asciimatics.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [
+        self.setuptools_scm
+      ];
+    }
+  );
+
+  av = super.av.overrideAttrs (
+    old: {
+      nativeBuildInputs = old.nativeBuildInputs ++ [
+        pkgs.pkgconfig
+      ];
+      buildInputs = old.buildInputs ++ [ pkgs.ffmpeg_4 ];
+    }
+  );
+
+  bcrypt = super.bcrypt.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [ pkgs.libffi ];
+    }
+  );
+
+  cffi = super.cffi.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [ pkgs.libffi ];
+    }
+  );
+
+  cftime = super.cftime.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [
+        self.cython
+      ];
+    }
+  );
+
+  configparser = addSetupTools super.configparser;
+
+  cbor2 = addSetupTools super.cbor2;
+
+  cryptography = super.cryptography.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [ pkgs.openssl ];
+    }
+  );
+
+  django = (
+    super.django.overrideAttrs (
+      old: {
+        propagatedNativeBuildInputs = (getAttrDefault "propagatedNativeBuildInputs" old [])
+        ++ [ pkgs.gettext ];
+      }
+    )
+  );
+
+  django-bakery = super.django-bakery.overrideAttrs (
+    old: {
+      configurePhase = ''
+        if ! test -e LICENSE; then
+          touch LICENSE
+        fi
+      '' + (getAttrDefault "configurePhase" old "");
+    }
+  );
+
+  # Environment markers are not always included (depending on how a dep was defined)
+  enum34 = if self.pythonAtLeast "3.4" then null else super.enum34;
+
+  grandalf = super.grandalf.overrideAttrs (
+    old: {
+      postPatch = ''
+        substituteInPlace setup.py --replace "setup_requires=['pytest-runner',]," "setup_requires=[]," || true
+      '';
+    }
+  );
+
+  horovod = super.horovod.overrideAttrs (
+    old: {
+      propagatedBuildInputs = old.propagatedBuildInputs ++ [ pkgs.openmpi ];
+    }
+  );
+
+  hypothesis = addSetupTools super.hypothesis;
+
+  importlib-metadata = addSetupTools super.importlib-metadata;
+
+  inflect = super.inflect.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [
+        self.setuptools_scm
+      ];
+    }
+  );
+
+  jsonschema = addSetupTools super.jsonschema;
+
+  keyring = addSetupTools super.keyring;
+
+  lap = super.lap.overrideAttrs (
+    old: {
+      propagatedBuildInputs = old.propagatedBuildInputs ++ [
+        self.numpy
+      ];
+    }
+  );
+
+  llvmlite = super.llvmlite.overrideAttrs (
+    old: {
+      nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.llvm ];
+
+      # Disable static linking
+      # https://github.com/numba/llvmlite/issues/93
+      postPatch = ''
+        substituteInPlace ffi/Makefile.linux --replace "-static-libstdc++" ""
+
+        substituteInPlace llvmlite/tests/test_binding.py --replace "test_linux" "nope"
+      '';
+
+      # Set directory containing llvm-config binary
+      preConfigure = ''
+        export LLVM_CONFIG=${pkgs.llvm}/bin/llvm-config
+      '';
+
+      __impureHostDeps = pkgs.stdenv.lib.optionals pkgs.stdenv.isDarwin [ "/usr/lib/libm.dylib" ];
+
+      passthru = old.passthru // { llvm = pkgs.llvm; };
+    }
+  );
+
+  lockfile = super.lockfile.overrideAttrs (
+    old: {
+      propagatedBuildInputs = old.propagatedBuildInputs ++ [ self.pbr ];
+    }
+  );
+
+  lxml = super.lxml.overrideAttrs (
+    old: {
+      nativeBuildInputs = with pkgs; old.nativeBuildInputs ++ [ pkgconfig libxml2.dev libxslt.dev ];
+      buildInputs = with pkgs; old.buildInputs ++ [ libxml2 libxslt ];
+    }
+  );
+
+  markupsafe = super.markupsafe.overrideAttrs (
+    old: {
+      src = old.src.override { pname = builtins.replaceStrings [ "markupsafe" ] [ "MarkupSafe" ] old.pname; };
+    }
+  );
+
+  matplotlib = super.matplotlib.overrideAttrs (
+    old: {
+      NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.isDarwin "-I${pkgs.libcxx}/include/c++/v1";
+
+      XDG_RUNTIME_DIR = "/tmp";
+
+      nativeBuildInputs = old.nativeBuildInputs ++ [
+        pkgs.pkgconfig
+      ];
+
+      propagatedBuildInputs = old.propagatedBuildInputs ++ [
+        pkgs.libpng
+        pkgs.freetype
+      ];
+
+      inherit (super.matplotlib) patches;
+    }
+  );
+
+  mccabe = super.mccabe.overrideAttrs (
+    old: {
+      postPatch = ''
+        substituteInPlace setup.py --replace "setup_requires=['pytest-runner']," "setup_requires=[]," || true
+      '';
+    }
+  );
+
+  netcdf4 = super.netcdf4.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [
+        self.cython
+      ];
+
+      propagatedBuildInputs = old.propagatedBuildInputs ++ [
+        pkgs.zlib
+        pkgs.netcdf
+        pkgs.hdf5
+        pkgs.curl
+        pkgs.libjpeg
+      ];
+
+      # Variables used to configure the build process
+      USE_NCCONFIG = "0";
+      HDF5_DIR = lib.getDev pkgs.hdf5;
+      NETCDF4_DIR = pkgs.netcdf;
+      CURL_DIR = pkgs.curl.dev;
+      JPEG_DIR = pkgs.libjpeg.dev;
+    }
+  );
+
+  numpy = super.numpy.overrideAttrs (
+    old: let
+      blas = pkgs.openblasCompat;
+      blasImplementation = lib.nameFromURL blas.name "-";
+      cfg = pkgs.writeTextFile {
+        name = "site.cfg";
+        text = (
+          lib.generators.toINI {} {
+            ${blasImplementation} = {
+              include_dirs = "${blas}/include";
+              library_dirs = "${blas}/lib";
+            } // lib.optionalAttrs (blasImplementation == "mkl") {
+              mkl_libs = "mkl_rt";
+              lapack_libs = "";
+            };
+          }
+        );
+      };
+    in
+      {
+        nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.gfortran ];
+        buildInputs = old.buildInputs ++ [ blas ];
+        enableParallelBuilding = true;
+        preBuild = ''
+          ln -s ${cfg} site.cfg
+        '';
+        passthru = old.passthru // {
+          blas = blas;
+          inherit blasImplementation cfg;
+        };
+      }
+  );
+
+  pillow = super.pillow.overrideAttrs (
+    old: {
+      nativeBuildInputs = [ pkgs.pkgconfig ] ++ old.nativeBuildInputs;
+      buildInputs = with pkgs; [ freetype libjpeg zlib libtiff libwebp tcl lcms2 ] ++ old.buildInputs;
+    }
+  );
+
+  pluggy = addSetupTools super.pluggy;
+
+  psycopg2 = super.psycopg2.overrideAttrs (
+    old: {
+      nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.postgresql ];
+    }
+  );
+
+  psycopg2-binary = super.psycopg2-binary.overrideAttrs (
+    old: {
+      nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.postgresql ];
+    }
+  );
+
+  py = addSetupTools super.py;
+
+  pyarrow = super.pyarrow.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [
+        self.cython
+      ];
+    }
+  );
+
+  pycairo = (
+    drv: (
+      drv.overridePythonAttrs (
+        _: {
+          format = "other";
+        }
+      )
+    ).overrideAttrs (
+      old: {
+
+        nativeBuildInputs = old.nativeBuildInputs ++ [
+          pkgs.meson
+          pkgs.ninja
+          pkgs.pkgconfig
+        ];
+
+        propagatedBuildInputs = old.propagatedBuildInputs ++ [
+          pkgs.cairo
+          pkgs.xlibsWrapper
+        ];
+
+        mesonFlags = [ "-Dpython=${if self.isPy3k then "python3" else "python"}" ];
+      }
+    )
+  ) super.pycairo;
+
+  pycocotools = super.pycocotools.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [
+        self.cython
+        self.numpy
+      ];
+    }
+  );
+
+  pygobject = super.pygobject.overrideAttrs (
+    old: {
+      nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.pkgconfig ];
+      buildInputs = old.buildInputs ++ [ pkgs.glib pkgs.gobject-introspection ];
+    }
+  );
+
+  pyopenssl = super.pyopenssl.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [ pkgs.openssl ];
+    }
+  );
+
+  pytest = addSetupTools super.pytest;
+
+  pytest-mock = addSetupTools super.pytest-mock;
+
+  python-dateutil = addSetupTools super.python-dateutil;
+
+  python-prctl = super.python-prctl.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [
+        self.setuptools_scm
+        pkgs.libcap
+      ];
+    }
+  );
+
+  scaleapi = super.scaleapi.overrideAttrs (
+    old: {
+      postPatch = ''
+        substituteInPlace setup.py --replace "install_requires = ['requests>=2.4.2', 'enum34']" "install_requires = ['requests>=2.4.2']" || true
+      '';
+    }
+  );
+
+  scipy = super.scipy.overrideAttrs (
+    old: {
+      nativeBuildInputs = old.nativeBuildInputs ++ [ pkgs.gfortran ];
+      setupPyBuildFlags = [ "--fcompiler='gnu95'" ];
+      enableParallelBuilding = true;
+      buildInputs = old.buildInputs ++ [ self.numpy.blas ];
+      preConfigure = ''
+        sed -i '0,/from numpy.distutils.core/s//import setuptools;from numpy.distutils.core/' setup.py
+        export NPY_NUM_BUILD_JOBS=$NIX_BUILD_CORES
+      '';
+      preBuild = ''
+        ln -s ${self.numpy.cfg} site.cfg
+      '';
+    }
+  );
+
+  shapely = super.shapely.overrideAttrs (
+    old: {
+      buildInputs = old.buildInputs ++ [ pkgs.geos self.cython ];
+      inherit (super.shapely) patches GEOS_LIBRARY_PATH;
+    }
+  );
+
+  six = addSetupTools super.six;
+
+  urwidtrees = super.urwidtrees.overrideAttrs (
+    old: {
+      propagatedBuildInputs = old.propagatedBuildInputs ++ [
+        self.urwid
+      ];
+    }
+  );
+
+  # TODO: Figure out getting rid of this hack
+  wheel = (
+    pkgs.python3.pkgs.override {
+      python = self.python;
+    }
+  ).wheel.overridePythonAttrs (
+    _: {
+      inherit (super.wheel) pname name version src;
+    }
+  );
+
+  zipp = addSetupTools super.zipp;
+}
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/pep425.nix b/pkgs/development/tools/poetry2nix/poetry2nix/pep425.nix
new file mode 100644
index 000000000000..b2e11205c36c
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/pep425.nix
@@ -0,0 +1,106 @@
+{ lib, stdenv, python, isLinux ? stdenv.isLinux }:
+
+let
+  inherit (lib.strings) hasSuffix hasInfix splitString removeSuffix;
+
+  # The 'cpxy" as determined by `python.version`
+  #
+  # e.g "2.7.17" -> "cp27"
+  #     "3.5.9"  -> "cp35"
+  pythonTag =
+    let
+      ver = builtins.splitVersion python.version;
+      major = builtins.elemAt ver 0;
+      minor = builtins.elemAt ver 1;
+    in
+      "cp${major}${minor}";
+
+  abiTag = "${pythonTag}m";
+
+  #
+  # Parses wheel file returning an attribute set
+  #
+  toWheelAttrs = str:
+    let
+      entries = splitString "-" str;
+      p = removeSuffix ".whl" (builtins.elemAt entries 4);
+    in
+      {
+        pkgName = builtins.elemAt entries 0;
+        pkgVer = builtins.elemAt entries 1;
+        pyVer = builtins.elemAt entries 2;
+        abi = builtins.elemAt entries 3;
+        platform = p;
+      };
+
+  #
+  # Builds list of acceptable osx wheel files
+  #
+  # <versions>   accepted versions in descending order of preference
+  # <candidates> list of wheel files to select from
+  findBestMatches = versions: candidates:
+    let
+      v = lib.lists.head versions;
+      vs = lib.lists.tail versions;
+    in
+      if (builtins.length versions == 0)
+      then []
+      else (builtins.filter (x: hasInfix v x.file) candidates) ++ (findBestMatches vs candidates);
+
+  # pyver = "cpXX"
+  # x     = "cpXX" | "py2" | "py3" | "py2.py3"
+  isPyVersionCompatible = pyver: x:
+    let
+      normalize = y: ''cp${lib.strings.removePrefix "cp" (lib.strings.removePrefix "py" y)}'';
+      isCompat = p: x: lib.strings.hasPrefix (normalize x) p;
+    in
+      lib.lists.any (isCompat pyver) (lib.strings.splitString "." x);
+
+  #
+  # Selects the best matching wheel file from a list of files
+  #
+  selectWheel = files:
+    let
+      filesWithoutSources = (builtins.filter (x: hasSuffix ".whl" x.file) files);
+
+      isPyAbiCompatible = pyabi: x: x == "none" || pyabi == x;
+
+      withPython = ver: abi: x: (isPyVersionCompatible ver x.pyVer) && (isPyAbiCompatible abi x.abi);
+
+      withPlatform = if isLinux
+      then (
+        x: x.platform == "manylinux1_${stdenv.platform.kernelArch}"
+        || x.platform == "manylinux2010_${stdenv.platform.kernelArch}"
+        || x.platform == "manylinux2014_${stdenv.platform.kernelArch}"
+        || x.platform == "any"
+      )
+      else (x: hasInfix "macosx" x.platform || x.platform == "any");
+
+      filterWheel = x:
+        let
+          f = toWheelAttrs x.file;
+        in
+          (withPython pythonTag abiTag f) && (withPlatform f);
+
+      filtered = builtins.filter filterWheel filesWithoutSources;
+
+      choose = files:
+        let
+          osxMatches = [ "10_12" "10_11" "10_10" "10_9" "any" ];
+          linuxMatches = [ "manylinux1_" "manylinux2010_" "manylinux2014_" "any" ];
+          chooseLinux = x: lib.singleton (builtins.head (findBestMatches linuxMatches x));
+          chooseOSX = x: lib.singleton (builtins.head (findBestMatches osxMatches x));
+        in
+          if isLinux
+          then chooseLinux files
+          else chooseOSX files;
+
+    in
+      if (builtins.length filtered == 0)
+      then []
+      else choose (filtered);
+
+in
+{
+  inherit selectWheel toWheelAttrs isPyVersionCompatible;
+}
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/pep508.nix b/pkgs/development/tools/poetry2nix/poetry2nix/pep508.nix
new file mode 100644
index 000000000000..bf1893931cd1
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/pep508.nix
@@ -0,0 +1,218 @@
+{ lib, stdenv }: python:
+
+let
+
+  # Like builtins.substring but with stop being offset instead of length
+  substr = start: stop: s: builtins.substring start (stop - start) s;
+
+  # Strip leading/trailing whitespace from string
+  stripStr = s: lib.elemAt (builtins.split "^ *" (lib.elemAt (builtins.split " *$" s) 0)) 2;
+
+  findSubExpressionsFun = acc: c: (
+    if c == "(" then (
+      let
+        posNew = acc.pos + 1;
+        isOpen = acc.openP == 0;
+        startPos = if isOpen then posNew else acc.startPos;
+      in
+        acc // {
+          inherit startPos;
+          exprs = acc.exprs ++ [ (substr acc.exprPos (acc.pos - 1) acc.expr) ];
+          pos = posNew;
+          openP = acc.openP + 1;
+        }
+    ) else if c == ")" then (
+      let
+        openP = acc.openP - 1;
+        exprs = findSubExpressions (substr acc.startPos acc.pos acc.expr);
+      in
+        acc // {
+          inherit openP;
+          pos = acc.pos + 1;
+          exprs = if openP == 0 then acc.exprs ++ [ exprs ] else acc.exprs;
+          exprPos = if openP == 0 then acc.pos + 1 else acc.exprPos;
+        }
+    ) else acc // { pos = acc.pos + 1; }
+  );
+
+  # Make a tree out of expression groups (parens)
+  findSubExpressions = expr: let
+    acc = builtins.foldl' findSubExpressionsFun {
+      exprs = [];
+      expr = expr;
+      pos = 0;
+      openP = 0;
+      exprPos = 0;
+      startPos = 0;
+    } (lib.stringToCharacters expr);
+    tailExpr = (substr acc.exprPos acc.pos expr);
+    tailExprs = if tailExpr != "" then [ tailExpr ] else [];
+  in
+    acc.exprs ++ tailExprs;
+
+  parseExpressions = exprs: let
+    splitCond = (
+      s: builtins.map
+        (x: stripStr (if builtins.typeOf x == "list" then (builtins.elemAt x 0) else x))
+        (builtins.split " (and|or) " (s + " "))
+    );
+
+    mapfn = expr: (
+      if (builtins.match "^ ?$" expr != null) then null  # Filter empty
+      else if (builtins.elem expr [ "and" "or" ]) then {
+        type = "bool";
+        value = expr;
+      }
+      else {
+        type = "expr";
+        value = expr;
+      }
+    );
+
+    parse = expr: builtins.filter (x: x != null) (builtins.map mapfn (splitCond expr));
+
+  in
+    builtins.foldl' (
+      acc: v: acc ++ (
+        if builtins.typeOf v == "string" then parse v else [ (parseExpressions v) ]
+      )
+    ) [] exprs;
+
+  # Transform individual expressions to structured expressions
+  # This function also performs variable substitution, replacing environment markers with their explicit values
+  transformExpressions = exprs: let
+    variables = {
+      os_name = "posix"; # TODO: Check other platforms
+      sys_platform = (
+        if stdenv.isLinux then "linux"
+        else if stdenv.isDarwin then "darwin"
+        else throw "Unsupported platform"
+      );
+      platform_machine = stdenv.platform.kernelArch;
+      platform_python_implementation = "CPython"; # Only CPython supported for now
+      platform_release = ""; # Field not reproducible
+      platform_system = (
+        if stdenv.isLinux then "Linux"
+        else if stdenv.isDarwin then "Darwin"
+        else throw "Unsupported platform"
+      );
+      platform_version = ""; # Field not reproducible
+      python_version = python.passthru.pythonVersion;
+      python_full_version = python.version;
+      implementation_name = "cpython"; # Only cpython supported for now
+      implementation_version = python.version;
+      extra = "";
+    };
+
+    substituteVar = value: if builtins.hasAttr value variables then (builtins.toJSON variables."${value}") else value;
+
+    processVar = value: builtins.foldl' (acc: v: v acc) value [
+      stripStr
+      substituteVar
+    ];
+
+  in
+    if builtins.typeOf exprs == "set" then (
+      if exprs.type == "expr" then (
+        let
+          mVal = ''[a-zA-Z0-9\'"_\. ]+'';
+          mOp = "in|[!=<>]+";
+          e = stripStr exprs.value;
+          m = builtins.map stripStr (builtins.match ''^(${mVal}) *(${mOp}) *(${mVal})$'' e);
+        in
+          {
+            type = "expr";
+            value = {
+              op = builtins.elemAt m 1;
+              values = [
+                (processVar (builtins.elemAt m 0))
+                (processVar (builtins.elemAt m 2))
+              ];
+            };
+          }
+      ) else exprs
+    ) else builtins.map transformExpressions exprs;
+
+  # Recursively eval all expressions
+  evalExpressions = exprs: let
+    unmarshal = v: (
+      # TODO: Handle single quoted values
+      if v == "True" then true
+      else if v == "False" then false
+      else builtins.fromJSON v
+    );
+    hasElem = needle: haystack: builtins.elem needle (builtins.filter (x: builtins.typeOf x == "string") (builtins.split " " haystack));
+    # TODO: Implement all operators
+    op = {
+      "<=" = x: y: (unmarshal x) <= (unmarshal y);
+      "<" = x: y: (unmarshal x) < (unmarshal y);
+      "!=" = x: y: x != y;
+      "==" = x: y: x == y;
+      ">=" = x: y: (unmarshal x) >= (unmarshal y);
+      ">" = x: y: (unmarshal x) > (unmarshal y);
+      "~=" = null;
+      "===" = null;
+      "in" = x: y: let
+        values = builtins.filter (x: builtins.typeOf x == "string") (builtins.split " " (unmarshal y));
+      in
+        builtins.elem (unmarshal x) values;
+    };
+  in
+    if builtins.typeOf exprs == "set" then (
+      if exprs.type == "expr" then (
+        let
+          expr = exprs;
+          result = (op."${expr.value.op}") (builtins.elemAt expr.value.values 0) (builtins.elemAt expr.value.values 1);
+        in
+          {
+            type = "value";
+            value = result;
+          }
+      ) else exprs
+    ) else builtins.map evalExpressions exprs;
+
+  # Now that we have performed an eval all that's left to do is to concat the graph into a single bool
+  reduceExpressions = exprs: let
+    cond = {
+      "and" = x: y: x && y;
+      "or" = x: y: x || y;
+    };
+    reduceExpressionsFun = acc: v: (
+      if builtins.typeOf v == "set" then (
+        if v.type == "value" then (
+          acc // {
+            value = cond."${acc.cond}" acc.value v.value;
+          }
+        ) else if v.type == "bool" then (
+          acc // {
+            cond = v.value;
+          }
+        ) else throw "Unsupported type"
+      ) else if builtins.typeOf v == "list" then (
+        let
+          ret = builtins.foldl' reduceExpressionsFun {
+            value = true;
+            cond = "and";
+          } v;
+        in
+          acc // {
+            value = cond."${acc.cond}" acc.value ret.value;
+          }
+      ) else throw "Unsupported type"
+    );
+  in
+    (
+      builtins.foldl' reduceExpressionsFun {
+        value = true;
+        cond = "and";
+      } exprs
+    ).value;
+
+in
+e: builtins.foldl' (acc: v: v acc) e [
+  findSubExpressions
+  parseExpressions
+  transformExpressions
+  evalExpressions
+  reduceExpressions
+]
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/pyproject-without-path.py b/pkgs/development/tools/poetry2nix/poetry2nix/pyproject-without-path.py
new file mode 100644
index 000000000000..bb61e4a5cb4b
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/pyproject-without-path.py
@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+# Patch out path dependencies from a pyproject.json file
+
+import json
+import sys
+
+data = json.load(sys.stdin)
+
+for dep in data['tool']['poetry']['dependencies'].values():
+    if isinstance(dep, dict):
+        try:
+            del dep['path'];
+        except KeyError:
+            pass
+        else:
+            dep['version'] = '*'
+
+json.dump(data, sys.stdout, indent=4)
diff --git a/pkgs/development/tools/poetry2nix/poetry2nix/semver.nix b/pkgs/development/tools/poetry2nix/poetry2nix/semver.nix
new file mode 100644
index 000000000000..620bb25ad974
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/poetry2nix/semver.nix
@@ -0,0 +1,80 @@
+{ lib }:
+
+let
+  inherit (builtins) elemAt match;
+
+  # Replace a list entry at defined index with set value
+  ireplace = idx: value: list: let
+    inherit (builtins) genList length;
+  in
+    genList (i: if i == idx then value else (elemAt list i)) (length list);
+
+  operators = let
+    matchWildCard = s: match "([^\*])(\.[\*])" s;
+    mkComparison = ret: version: v: builtins.compareVersions version v == ret;
+    mkIdxComparison = idx: version: v: let
+      ver = builtins.splitVersion v;
+      minor = builtins.toString (lib.toInt (elemAt ver idx) + 1);
+      upper = builtins.concatStringsSep "." (ireplace idx minor ver);
+    in
+      operators.">=" version v && operators."<" version upper;
+    dropWildcardPrecision = f: version: constraint: let
+      m = matchWildCard constraint;
+      hasWildcard = m != null;
+      c = if hasWildcard then (elemAt m 0) else constraint;
+      v =
+        if hasWildcard then (builtins.substring 0 (builtins.stringLength c) version)
+        else version;
+    in
+      f v c;
+  in
+    {
+      # Prefix operators
+      "==" = dropWildcardPrecision (mkComparison 0);
+      ">" = dropWildcardPrecision (mkComparison 1);
+      "<" = dropWildcardPrecision (mkComparison (-1));
+      "!=" = v: c: ! operators."==" v c;
+      ">=" = v: c: operators."==" v c || operators.">" v c;
+      "<=" = v: c: operators."==" v c || operators."<" v c;
+      # Semver specific operators
+      "~" = mkIdxComparison 1; #
+      "^" = mkIdxComparison 0;
+      # Infix operators
+      "-" = version: v: operators.">=" version v.vl && operators."<=" version v.vu;
+    };
+
+  re = {
+    operators = "([=><!~\^]+)";
+    version = "([0-9\.\*x]+)";
+  };
+
+  parseConstraint = constraint: let
+    constraintStr = builtins.replaceStrings [ " " ] [ "" ] constraint;
+    # The common prefix operators
+    mPre = match "${re.operators} *${re.version}" constraintStr;
+    # There is also an infix operator to match ranges
+    mIn = match "${re.version} *(-) *${re.version}" constraintStr;
+  in
+    (
+      if mPre != null then {
+        op = elemAt mPre 0;
+        v = elemAt mPre 1;
+      }
+        # Infix operators are range matches
+      else if mIn != null then {
+        op = elemAt mIn 1;
+        v = {
+          vl = (elemAt mIn 0);
+          vu = (elemAt mIn 2);
+        };
+      }
+      else throw "Constraint \"${constraintStr}\" could not be parsed"
+    );
+
+  satisfiesSemver = version: constraint: let
+    inherit (parseConstraint constraint) op v;
+  in
+    if constraint == "*" then true else operators."${op}" version v;
+
+in
+{ inherit satisfiesSemver; }
diff --git a/pkgs/development/tools/poetry2nix/update b/pkgs/development/tools/poetry2nix/update
new file mode 100755
index 000000000000..a5d367590be1
--- /dev/null
+++ b/pkgs/development/tools/poetry2nix/update
@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+pwd=$(pwd)
+workdir=$(mktemp -d)
+
+function cleanup {
+    cd "$pwd"
+    rm -rf $workdir
+}
+trap cleanup EXIT
+
+cd "$workdir"
+
+curl -L -s https://github.com/nix-community/poetry2nix/archive/master.tar.gz | tar -xz
+mv poetry2nix-master/* .
+
+mkdir build
+cp *.nix *.json *.py build/
+cp -r bin build/
+rm build/shell.nix build/generate.py build/overlay.nix build/flake.nix
+
+cat > build/README.md << EOF
+Dont change these files here, they are maintained at https://github.com/nix-community/poetry2nix
+
+The update procedure is as-follows:
+1. Send your change to the upstream poetry2nix repository
+2. Get it approved with tests passing
+3. Run the update script in pkgs/development/tools/poetry2nix
+EOF
+
+rm -rf "$pwd/poetry2nix"
+mv build "$pwd/poetry2nix"
diff --git a/pkgs/games/devilutionx/default.nix b/pkgs/games/devilutionx/default.nix
index 3241e6dd387f..ac7d61b31c74 100644
--- a/pkgs/games/devilutionx/default.nix
+++ b/pkgs/games/devilutionx/default.nix
@@ -1,16 +1,19 @@
 { stdenv, fetchFromGitHub, cmake, SDL2, SDL2_mixer, SDL2_ttf, libsodium, pkg-config }:
 stdenv.mkDerivation rec {
-  version = "0.5.0";
+  version = "1.0.0";
   pname = "devilutionx";
 
   src = fetchFromGitHub {
     owner = "diasurgical";
     repo = "devilutionX";
     rev = version;
-    sha256 = "010hxj129zmsynvizk89vm2y29dcxsfi585czh3f03wfr38rxa6b";
+    sha256 = "0lx903gchda4bgr71469yn63rx5ya6xv9j1azx18nrv3sskrphn4";
   };
 
-  NIX_CFLAGS_COMPILE = "-I${SDL2_ttf}/include/SDL2";
+  NIX_CFLAGS_COMPILE = [
+    "-I${SDL2_ttf}/include/SDL2"
+    ''-DTTF_FONT_PATH="${placeholder "out"}/share/fonts/truetype/CharisSILB.ttf"''
+  ];
 
   nativeBuildInputs = [ pkg-config cmake ];
   buildInputs = [ libsodium SDL2 SDL2_mixer SDL2_ttf ];
@@ -22,8 +25,10 @@ stdenv.mkDerivation rec {
     mkdir -p $out/Applications
     mv devilutionx.app $out/Applications
   '' else ''
-    mkdir -p $out/bin
-    cp devilutionx $out/bin
+    install -Dm755 -t $out/bin devilutionx
+    install -Dt $out/share/fonts/truetype ../Packaging/resources/CharisSILB.ttf
+
+    # TODO: icons and .desktop (see Packages/{debian,fedora}/*)
   '') + ''
 
     runHook postInstall
diff --git a/pkgs/games/hyperrogue/default.nix b/pkgs/games/hyperrogue/default.nix
index b4f5e4f7f630..09ecd4279e44 100644
--- a/pkgs/games/hyperrogue/default.nix
+++ b/pkgs/games/hyperrogue/default.nix
@@ -3,13 +3,13 @@
 
 stdenv.mkDerivation rec {
   pname = "hyperrogue";
-  version = "10.5e";
+  version = "11.2d";
 
   src = fetchFromGitHub {
     owner = "zenorogue";
     repo = "hyperrogue";
-    rev = "v${version}";
-    sha256 = "1sjr26if3xv8xv52app1hkxs0bbgbviagydm4mdwbxjpd6v3d1aa";
+    rev = stdenv.lib.strings.stringAsChars (x: if x == "." then "" else x) "v${version}";
+    sha256 = "0aj4xy5xjdj32l5mk8796ldh9d7h8rx35kgc1vr7acb4fhpppb0f";
   };
 
   CPPFLAGS = "-I${SDL.dev}/include/SDL";
diff --git a/pkgs/servers/home-assistant/cli.nix b/pkgs/servers/home-assistant/cli.nix
index 7fc80ed75407..36b319470255 100644
--- a/pkgs/servers/home-assistant/cli.nix
+++ b/pkgs/servers/home-assistant/cli.nix
@@ -2,11 +2,11 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "homeassistant-cli";
-  version = "0.7.0";
+  version = "0.8.0";
 
   src = python3.pkgs.fetchPypi {
     inherit pname version;
-    sha256 = "a38d4669201ac2afa71b6578a220bf4d6d59131263b278d51ebd1479677f6baf";
+    sha256 = "0qq42b2a0rlrzaxwf3zqks5gzgv0hf4pz4yjjl6ldnizw8fcj40n";
   };
 
   postPatch = ''
diff --git a/pkgs/servers/http/nginx/nix-etag-1.15.4.patch b/pkgs/servers/http/nginx/nix-etag-1.15.4.patch
index 9dec715bf6c5..c1473ccdb1b9 100644
--- a/pkgs/servers/http/nginx/nix-etag-1.15.4.patch
+++ b/pkgs/servers/http/nginx/nix-etag-1.15.4.patch
@@ -1,14 +1,8 @@
-From f6a978f024d01202f954483423af1b2d5d5159a6 Mon Sep 17 00:00:00 2001
-From: Yegor Timoshenko <yegortimoshenko@riseup.net>
-Date: Fri, 28 Sep 2018 03:27:04 +0000
-Subject: [PATCH] If root is in Nix store, set ETag to its path hash
-
----
- src/http/ngx_http_core_module.c | 56 +++++++++++++++++++++++++++++----
- 1 file changed, 50 insertions(+), 6 deletions(-)
+This patch makes it possible to serve static content from Nix store paths, by
+using the hash of the store path for the ETag header.
 
 diff --git a/src/http/ngx_http_core_module.c b/src/http/ngx_http_core_module.c
-index c57ec00c..b7992de2 100644
+index cb49ef74..f88dc77c 100644
 --- a/src/http/ngx_http_core_module.c
 +++ b/src/http/ngx_http_core_module.c
 @@ -1583,6 +1583,7 @@ ngx_http_set_etag(ngx_http_request_t *r)
@@ -19,7 +13,7 @@ index c57ec00c..b7992de2 100644
  
      clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
  
-@@ -1598,16 +1599,61 @@ ngx_http_set_etag(ngx_http_request_t *r)
+@@ -1598,16 +1599,62 @@ ngx_http_set_etag(ngx_http_request_t *r)
      etag->hash = 1;
      ngx_str_set(&etag->key, "ETag");
  
@@ -68,6 +62,7 @@ index c57ec00c..b7992de2 100644
 +        }
 +
 +        ngx_memcpy(etag->value.data, ptr1, etag->value.len);
++        ngx_http_clear_last_modified(r);
 +    } else {
 +        etag->value.data = ngx_pnalloc(r->pool, NGX_OFF_T_LEN + NGX_TIME_T_LEN + 3);
 +
@@ -87,6 +82,3 @@ index c57ec00c..b7992de2 100644
  
      r->headers_out.etag = etag;
  
--- 
-2.19.0
-
diff --git a/pkgs/tools/package-management/cargo-release/default.nix b/pkgs/tools/package-management/cargo-release/default.nix
index eb3977e84e61..3e3ba47be056 100644
--- a/pkgs/tools/package-management/cargo-release/default.nix
+++ b/pkgs/tools/package-management/cargo-release/default.nix
@@ -1,19 +1,20 @@
-{ stdenv, rustPlatform, fetchFromGitHub, Security }:
+{ stdenv, rustPlatform, fetchFromGitHub, Security, openssl, pkg-config }:
 
 rustPlatform.buildRustPackage rec {
   pname = "cargo-release";
-  version = "0.12.4";
+  version = "0.13.0";
 
   src = fetchFromGitHub {
     owner = "sunng87";
     repo = "cargo-release";
     rev = "v${version}";
-    sha256 = "02rx25dd3klprwr1qmn5vn4vz4244amk2ky4nqfmi4vq3ygrhd1c";
+    sha256 = "1w9w43i5br94vg5m4idabh67p4ffsx2lmc2g0ak2k961vl46wr0q";
   };
 
-  cargoSha256 = "18nbmq8j58jlka1lsrx2y0bhb9l5f3wyvcr1zmmda3hvc3vm7kla";
+  cargoSha256 = "075fvvd4c8f3kz6i6ny835h6jpa3c1v3miwfwwrdyy49a85lzjyj";
 
-  buildInputs = stdenv.lib.optional stdenv.isDarwin Security;
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ openssl ] ++ stdenv.lib.optional stdenv.isDarwin Security;
 
   meta = with stdenv.lib; {
     description = ''Cargo subcommand "release": everything about releasing a rust crate'';
diff --git a/pkgs/tools/security/spectre-meltdown-checker/default.nix b/pkgs/tools/security/spectre-meltdown-checker/default.nix
index 3ece05926ccc..656efbf390cb 100644
--- a/pkgs/tools/security/spectre-meltdown-checker/default.nix
+++ b/pkgs/tools/security/spectre-meltdown-checker/default.nix
@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   pname = "spectre-meltdown-checker";
-  version = "0.42";
+  version = "0.43";
 
   src = fetchFromGitHub {
     owner = "speed47";
     repo = "spectre-meltdown-checker";
     rev = "v${version}";
-    sha256 = "0pppf844i7b72hqnmfvq72w5y7b6dxd16y29l6j84maf22zxbjni";
+    sha256 = "1ys5m1yvm26qjlsjpqqd33lwpb880p0ay289hmifxjjawkqddjgg";
   };
 
   prePatch = ''
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index cc877490a9df..3c4bfa4d9ccc 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -8688,6 +8688,7 @@ in
 
   cargo-flamegraph = callPackage ../development/tools/cargo-flamegraph {
     inherit (darwin.apple_sdk.frameworks) Security;
+    inherit (linuxPackages) perf;
   };
 
   carnix = (callPackage ../build-support/rust/carnix.nix { }).carnix { };
@@ -9305,7 +9306,14 @@ in
   svg2tikz = python27Packages.svg2tikz;
 
   pew = callPackage ../development/tools/pew {};
-  poetry = with python3Packages; toPythonApplication poetry;
+
+  poetry = callPackage ../development/tools/poetry {
+    python = python3;
+  };
+  poetry2nix = callPackage ../development/tools/poetry2nix/poetry2nix {
+    inherit pkgs lib;
+  };
+
   pipenv = callPackage ../development/tools/pipenv {};
 
   pipewire = callPackage ../development/libraries/pipewire {};
@@ -13224,6 +13232,8 @@ in
 
   microsoft_gsl = callPackage ../development/libraries/microsoft_gsl { };
 
+  micronucleus = callPackage ../development/tools/misc/micronucleus { };
+
   mimalloc = callPackage ../development/libraries/mimalloc { };
 
   minizip = callPackage ../development/libraries/minizip { };