klipper: init at 0.8.0

pkgs/servers/klipper/default.nix

@@ -0,0 +1,49 @@
+{ stdenv
+, lib
+, fetchFromGitHub
+, python2
+}:
+stdenv.mkDerivation rec {
+  name = "klipper";
+  version = "0.8.0";
+
+  src = fetchFromGitHub {
+    owner = "KevinOConnor";
+    repo = "klipper";
+    rev = "v${version}";
+    sha256 = "1ijy2ij9yii5hms10914i614wkjpsy0k4rbgnm6l594gphivdfm7";
+  };
+
+  sourceRoot = "source/klippy";
+
+  # there is currently an attempt at moving it to Python 3, but it will remain
+  # Python 2 for the foreseeable future.
+  # c.f. https://github.com/KevinOConnor/klipper/pull/3278
+  # NB: This is needed for the postBuild step
+  nativeBuildInputs = [ (python2.withPackages ( p: with p; [ cffi ] )) ];
+
+  buildInputs = [ (python2.withPackages (p: with p; [ cffi pyserial greenlet jinja2 ])) ];
+
+  # we need to run this to prebuild the chelper.
+  postBuild = "python2 ./chelper/__init__.py";
+
+  # NB: We don't move the main entry point into `/bin`, or even symlink it,
+  # because it uses relative paths to find necessary modules. We could wrap but
+  # this is used 99% of the time as a service, so it's not worth the effort.
+  installPhase = ''
+    runHook preInstall
+    mkdir -p $out/lib/klipper
+    cp -r ./* $out/lib/klipper
+
+    chmod 755 $out/lib/klipper/klippy.py
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "The Klipper 3D printer firmware";
+    homepage = "https://github.com/KevinOConnor/klipper";
+    maintainers = with maintainers; [ lovesegfault ];
+    platforms = platforms.linux;
+    license = licenses.gpl3Only;
+  };
+}

pkgs/top-level/all-packages.nix

@@ -2164,6 +2164,8 @@ in
 
   kramdown-rfc2629 = callPackage ../tools/text/kramdown-rfc2629 { };
 
+  klipper = callPackage ../servers/klipper { };
+
   lcdproc = callPackage ../servers/monitoring/lcdproc { };
 
   languagetool = callPackage ../tools/text/languagetool {  };