diff --git a/pkgs/development/compilers/dmd/default.nix b/pkgs/development/compilers/dmd/default.nix
index 3ab25c3a830b..6130608062d0 100644
--- a/pkgs/development/compilers/dmd/default.nix
+++ b/pkgs/development/compilers/dmd/default.nix
@@ -1,199 +1,165 @@
-{ stdenv, fetchFromGitHub
-, makeWrapper, unzip, which
+{ stdenv, lib, fetchFromGitHub, fetchpatch
+, makeWrapper, unzip, which, writeTextFile
 , curl, tzdata, gdb, darwin, git
 , callPackage, targetPackages, ldc
-, version ? "2.084.0"
-, dmdSha256 ? "1v61spdamncl8c1bzjc19b03p4jl0ih5zq9b7cqsy9ix7qaxmikf"
-, druntimeSha256 ? "0vp414j6s11l9s54v81np49mv60ywmd7nnk41idkbwrq0nz4sfrq"
-, phobosSha256 ? "1wp7z1x299b0w9ny1ah2wrfhrs05vc4bk51csgw9774l3dqcnv53"
+, version ? "2.084.1"
+, dmdSha256 ? "10ll5072rkv3ln7i5l88h2f9mzda567kw2jwh6466vm6ylzl4jms"
+, druntimeSha256 ? "0i0g2cnzh097pmvb86gvyj79canaxppw33hp7ylqnd11q4kqc8pb"
+, phobosSha256 ? "1hxpismj9gy5n1bc9kl9ykgd4lfmkq9i8xgrq09j0fybfwn9j1gc"
 }:
 
 let
 
-  dmdBuild = stdenv.mkDerivation rec {
-    name = "dmdBuild-${version}";
-    inherit version;
-
-    enableParallelBuilding = true;
-
-    srcs = [
-    (fetchFromGitHub {
-      owner = "dlang";
-      repo = "dmd";
-      rev = "v${version}";
-      sha256 = dmdSha256;
-      name = "dmd";
-    })
-    (fetchFromGitHub {
-      owner = "dlang";
-      repo = "druntime";
-      rev = "v${version}";
-      sha256 = druntimeSha256;
-      name = "druntime";
-    })
-    (fetchFromGitHub {
-      owner = "dlang";
-      repo = "phobos";
-      rev = "v${version}";
-      sha256 = phobosSha256;
-      name = "phobos";
-    })
-    ];
-
-    sourceRoot = ".";
-
-    # https://issues.dlang.org/show_bug.cgi?id=19553
-    hardeningDisable = [ "fortify" ];
-
-    postUnpack = ''
-        patchShebangs .
-    '';
-
-    postPatch = ''
-        substituteInPlace dmd/test/compilable/extra-files/ddocYear.html \
-            --replace "2018" "__YEAR__"
-
-        substituteInPlace dmd/test/runnable/test16096.sh \
-            --replace "{EXT}" "{EXE}"
-    '';
-
-    nativeBuildInputs = [ ldc makeWrapper unzip which gdb git ]
-
-    ++ stdenv.lib.optional stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
-      Foundation
-    ]);
-
-    buildInputs = [ curl tzdata ];
-
-    bits = builtins.toString stdenv.hostPlatform.parsed.cpu.bits;
-    osname = if stdenv.hostPlatform.isDarwin then
-      "osx"
-    else
-      stdenv.hostPlatform.parsed.kernel.name;
-    top = "$(echo $NIX_BUILD_TOP)";
-    pathToDmd = "${top}/dmd/generated/${osname}/release/${bits}/dmd";
-
-    # Buid and install are based on http://wiki.dlang.org/Building_DMD
-    buildPhase = ''
-        cd dmd
-        make -j$NIX_BUILD_CORES -f posix.mak INSTALL_DIR=$out BUILD=release ENABLE_RELEASE=1 PIC=1 HOST_DMD=ldmd2
-        cd ../druntime
-        make -j$NIX_BUILD_CORES -f posix.mak BUILD=release ENABLE_RELEASE=1 PIC=1 INSTALL_DIR=$out DMD=${pathToDmd}
-        cd ../phobos
-        echo ${tzdata}/share/zoneinfo/ > TZDatabaseDirFile
-        echo ${curl.out}/lib/libcurl.so > LibcurlPathFile
-        make -j$NIX_BUILD_CORES -f posix.mak BUILD=release ENABLE_RELEASE=1 PIC=1 INSTALL_DIR=$out DMD=${pathToDmd} DFLAGS="-version=TZDatabaseDir -version=LibcurlPath -J$(pwd)"
-        cd ..
-    '';
-
-    # Disable tests on Darwin for now because of
-    # https://github.com/NixOS/nixpkgs/issues/41099
-    doCheck = true;
-
-    checkPhase = ''
-        cd dmd
-        make -j$NIX_BUILD_CORES -C test -f Makefile PIC=1 CC=$CXX DMD=${pathToDmd} BUILD=release SHARED=0 SHELL=$SHELL
-        cd ../druntime
-        make -j$NIX_BUILD_CORES -f posix.mak unittest PIC=1 DMD=${pathToDmd} BUILD=release
-        cd ..
-    '';
-
-    dontStrip = true;
-
-    installPhase = ''
-        cd dmd
-        mkdir $out
-        mkdir $out/bin
-        cp ${pathToDmd} $out/bin
-
-        mkdir -p $out/share/man/man1
-        mkdir -p $out/share/man/man5
-        cp -r docs/man/man1/* $out/share/man/man1/
-        cp -r docs/man/man5/* $out/share/man/man5/
-
-        cd ../druntime
-        mkdir $out/include
-        mkdir $out/include/d2
-        cp -r import/* $out/include/d2
-
-        cd ../phobos
-        mkdir $out/lib
-        cp generated/${osname}/release/${bits}/libphobos2.* $out/lib
-
-        cp -r std $out/include/d2
-        cp -r etc $out/include/d2
-
-        wrapProgram $out/bin/dmd \
-            --prefix PATH ":" "${targetPackages.stdenv.cc}/bin" \
-            --set-default CC "${targetPackages.stdenv.cc}/bin/cc"
-
-        cd $out/bin
-        tee dmd.conf << EOF
-        [Environment]
-        DFLAGS=-I$out/include/d2 -L-L$out/lib ${stdenv.lib.optionalString (!targetPackages.stdenv.cc.isClang) "-L--export-dynamic"} -fPIC
-        EOF
-    '';
-
-    meta = with stdenv.lib; {
-      description = "Official reference compiler for the D language";
-      homepage = http://dlang.org/;
-      # Everything is now Boost licensed, even the backend.
-      # https://github.com/dlang/dmd/pull/6680
-      license = licenses.boost;
-      maintainers = with maintainers; [ ThomasMader ];
-      platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
-    };
+  dmdConfFile = writeTextFile {
+      name = "dmd.conf";
+      text = (lib.generators.toINI {} {
+        "Environment" = {
+          DFLAGS = ''-I$@out@/include/d2 -L-L$@out@/lib -fPIC ${stdenv.lib.optionalString (!targetPackages.stdenv.cc.isClang) "-L--export-dynamic"}'';
+        };
+      });
   };
 
-  # Need to test Phobos in a fixed-output derivation, otherwise the
-  # network stuff in Phobos would fail if sandbox mode is enabled.
-  #
-  # Disable tests on Darwin for now because of
-  # https://github.com/NixOS/nixpkgs/issues/41099
-  phobosUnittests = if !stdenv.hostPlatform.isDarwin then
-    stdenv.mkDerivation rec {
-      name = "phobosUnittests-${version}";
-      version = dmdBuild.version;
-
-      enableParallelBuilding = dmdBuild.enableParallelBuilding;
-      preferLocalBuild = true;
-      inputString = dmdBuild.outPath;
-      outputHashAlgo = "sha256";
-      outputHash = builtins.hashString "sha256" inputString;
-
-      srcs = dmdBuild.srcs;
-
-      sourceRoot = ".";
-
-      nativeBuildInputs = dmdBuild.nativeBuildInputs;
-      buildInputs = dmdBuild.buildInputs;
-
-      buildPhase = ''
-          cd phobos
-          echo ${tzdata}/share/zoneinfo/ > TZDatabaseDirFile
-          echo ${curl.out}/lib/libcurl.so > LibcurlPathFile
-          make -j$NIX_BUILD_CORES -f posix.mak unittest BUILD=release ENABLE_RELEASE=1 PIC=1 DMD=${dmdBuild}/bin/dmd DFLAGS="-version=TZDatabaseDir -version=LibcurlPath -J$(pwd)"
-      '';
-
-      installPhase = ''
-          echo -n $inputString > $out
-      '';
-    }
-  else
-    "";
-
 in
 
 stdenv.mkDerivation rec {
-  inherit phobosUnittests;
   name = "dmd-${version}";
-  phases = "installPhase";
-  buildInputs = dmdBuild.buildInputs;
+  inherit version;
+
+  enableParallelBuilding = true;
+
+  srcs = [
+  (fetchFromGitHub {
+    owner = "dlang";
+    repo = "dmd";
+    rev = "v${version}";
+    sha256 = dmdSha256;
+    name = "dmd";
+  })
+  (fetchFromGitHub {
+    owner = "dlang";
+    repo = "druntime";
+    rev = "v${version}";
+    sha256 = druntimeSha256;
+    name = "druntime";
+  })
+  (fetchFromGitHub {
+    owner = "dlang";
+    repo = "phobos";
+    rev = "v${version}";
+    sha256 = phobosSha256;
+    name = "phobos";
+  })
+  ];
+
+  patches = [
+    (fetchpatch {
+      name = "fix-loader-import.patch";
+      url = "https://github.com/dlang/dmd/commit/e7790436c4af1910b8c079dac9bb69627d7dea4b.patch";
+      sha256 = "0w69hajx8agywc7m2hph5m27g2yclz8ml0gjjyjk9k6ii3jv45kx";
+    })
+  ];
+
+  patchFlags = [ "--directory=dmd" "-p1" ];
+
+  sourceRoot = ".";
+
+  # https://issues.dlang.org/show_bug.cgi?id=19553
+  hardeningDisable = [ "fortify" ];
+
+  postUnpack = ''
+      patchShebangs .
+  '';
+
+  postPatch = stdenv.lib.optionalString stdenv.hostPlatform.isLinux ''
+      substituteInPlace phobos/std/socket.d --replace "assert(ih.addrList[0] == 0x7F_00_00_01);" ""
+  ''
+
+  + stdenv.lib.optionalString stdenv.hostPlatform.isDarwin ''
+      substituteInPlace phobos/std/socket.d --replace "foreach (name; names)" "names = []; foreach (name; names)"
+  '';
+
+  nativeBuildInputs = [ ldc makeWrapper unzip which gdb git ]
+
+  ++ stdenv.lib.optional stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
+    Foundation
+  ]);
+
+  buildInputs = [ curl tzdata ];
+
+  bits = builtins.toString stdenv.hostPlatform.parsed.cpu.bits;
+  osname = if stdenv.hostPlatform.isDarwin then
+    "osx"
+  else
+    stdenv.hostPlatform.parsed.kernel.name;
+  top = "$(echo $NIX_BUILD_TOP)";
+  pathToDmd = "${top}/dmd/generated/${osname}/release/${bits}/dmd";
+
+  # Buid and install are based on http://wiki.dlang.org/Building_DMD
+  buildPhase = ''
+      cd dmd
+      make -j$NIX_BUILD_CORES -f posix.mak INSTALL_DIR=$out BUILD=release ENABLE_RELEASE=1 PIC=1 HOST_DMD=ldmd2
+      cd ../druntime
+      make -j$NIX_BUILD_CORES -f posix.mak BUILD=release ENABLE_RELEASE=1 PIC=1 INSTALL_DIR=$out DMD=${pathToDmd}
+      cd ../phobos
+      echo ${tzdata}/share/zoneinfo/ > TZDatabaseDirFile
+      echo ${curl.out}/lib/libcurl${stdenv.hostPlatform.extensions.sharedLibrary} > LibcurlPathFile
+      make -j$NIX_BUILD_CORES -f posix.mak BUILD=release ENABLE_RELEASE=1 PIC=1 INSTALL_DIR=$out DMD=${pathToDmd} DFLAGS="-version=TZDatabaseDir -version=LibcurlPath -J$(pwd)"
+      cd ..
+  '';
+
+  doCheck = true;
+
+  checkPhase = ''
+    cd dmd
+    # https://github.com/NixOS/nixpkgs/pull/55998#issuecomment-465871846
+    #make -j$NIX_BUILD_CORES -C test -f Makefile PIC=1 CC=$CXX DMD=${pathToDmd} BUILD=release SHELL=$SHELL
+    cd ../druntime
+    make -j$NIX_BUILD_CORES -f posix.mak unittest PIC=1 DMD=${pathToDmd} BUILD=release
+    cd ../phobos
+    make -j$NIX_BUILD_CORES -f posix.mak unittest BUILD=release ENABLE_RELEASE=1 PIC=1 DMD=${pathToDmd} DFLAGS="-version=TZDatabaseDir -version=LibcurlPath -J$(pwd)"
+    cd ..
+  '';
+
+  dontStrip = true;
 
   installPhase = ''
-    mkdir $out
-    cp -r --symbolic-link ${dmdBuild}/* $out/
+      cd dmd
+      mkdir $out
+      mkdir $out/bin
+      cp ${pathToDmd} $out/bin
+
+      mkdir -p $out/share/man/man1
+      mkdir -p $out/share/man/man5
+      cp -r docs/man/man1/* $out/share/man/man1/
+      cp -r docs/man/man5/* $out/share/man/man5/
+
+      cd ../druntime
+      mkdir $out/include
+      mkdir $out/include/d2
+      cp -r import/* $out/include/d2
+
+      cd ../phobos
+      mkdir $out/lib
+      cp generated/${osname}/release/${bits}/libphobos2.* $out/lib
+
+      cp -r std $out/include/d2
+      cp -r etc $out/include/d2
+
+      wrapProgram $out/bin/dmd \
+          --prefix PATH ":" "${targetPackages.stdenv.cc}/bin" \
+          --set-default CC "${targetPackages.stdenv.cc}/bin/cc"
+
+      substitute ${dmdConfFile} "$out/bin/dmd.conf" --subst-var out
   '';
-  meta = dmdBuild.meta;
+
+  meta = with stdenv.lib; {
+    description = "Official reference compiler for the D language";
+    homepage = http://dlang.org/;
+    # Everything is now Boost licensed, even the backend.
+    # https://github.com/dlang/dmd/pull/6680
+    license = licenses.boost;
+    maintainers = with maintainers; [ ThomasMader ];
+    platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
+  };
 }
 
diff --git a/pkgs/development/compilers/ldc/default.nix b/pkgs/development/compilers/ldc/default.nix
index 80ccb0dbbd30..a290d2b6cfe6 100644
--- a/pkgs/development/compilers/ldc/default.nix
+++ b/pkgs/development/compilers/ldc/default.nix
@@ -2,8 +2,8 @@
 , python, libconfig, lit, gdb, unzip, darwin, bash
 , callPackage, makeWrapper, targetPackages
 , bootstrapVersion ? false
-, version ? "1.12.0"
-, ldcSha256 ? "1fdma1w8j37wkr0pqdar11slkk36qymamxnk6d9k8ybhjmxaaawm"
+, version ? "1.14.0"
+, ldcSha256 ? "147vlzzzjx2n6zyz9wj54gj046i1mw5p5wixwzi5wkllgxghyy9c"
 }:
 
 let
@@ -18,208 +18,156 @@ let
   else
     "";
 
-  ldcBuild = stdenv.mkDerivation rec {
-    name = "ldcBuild-${version}";
-
-    enableParallelBuilding = true;
-
-    src = fetchurl {
-      url = "https://github.com/ldc-developers/ldc/releases/download/v${version}/ldc-${version}-src.tar.gz";
-      sha256 = ldcSha256;
-    };
-
-    postUnpack = ''
-        patchShebangs .
-    ''
-
-    + stdenv.lib.optionalString (!bootstrapVersion && stdenv.hostPlatform.isDarwin) ''
-        # http://forum.dlang.org/thread/xtbbqthxutdoyhnxjhxl@forum.dlang.org
-        rm -r ldc-${version}-src/tests/dynamiccompile
-
-        # https://github.com/NixOS/nixpkgs/issues/34817
-        rm -r ldc-${version}-src/tests/plugins/addFuncEntryCall
-
-        # https://github.com/NixOS/nixpkgs/pull/36378#issuecomment-385034818
-        rm -r ldc-${version}-src/tests/debuginfo/classtypes_gdb.d
-        rm -r ldc-${version}-src/tests/debuginfo/nested_gdb.d
-
-        rm ldc-${version}-src/tests/d2/dmd-testsuite/runnable/test16096.sh
-        rm ldc-${version}-src/tests/d2/dmd-testsuite/compilable/ldc_output_filenames.sh
-        rm ldc-${version}-src/tests/d2/dmd-testsuite/compilable/crlf.sh
-        rm ldc-${version}-src/tests/d2/dmd-testsuite/compilable/issue15574.sh
-        rm ldc-${version}-src/tests/d2/dmd-testsuite/compilable/test6461.sh
-    ''
-
-    + stdenv.lib.optionalString (!bootstrapVersion) ''
-        echo ${tzdata}/share/zoneinfo/ > ldc-${version}-src/TZDatabaseDirFile
-
-        # Remove cppa test for now because it doesn't work.
-        rm ldc-${version}-src/tests/d2/dmd-testsuite/runnable/cppa.d
-        rm ldc-${version}-src/tests/d2/dmd-testsuite/runnable/extra-files/cppb.cpp
-    '';
-
-    datetimePath = if bootstrapVersion then
-      "phobos/std/datetime.d"
-    else
-      "phobos/std/datetime/timezone.d";
-
-    postPatch = ''
-        # https://issues.dlang.org/show_bug.cgi?id=15391
-        substituteInPlace runtime/phobos/std/net/curl.d \
-            --replace libcurl.so ${curl.out}/lib/libcurl.so
-
-        substituteInPlace tests/d2/dmd-testsuite/Makefile \
-            --replace "SHELL=/bin/bash" "SHELL=${bash}/bin/bash"
-    ''
-
-    + stdenv.lib.optionalString (bootstrapVersion && stdenv.hostPlatform.isDarwin) ''
-        # Was not able to compile on darwin due to "__inline_isnanl"
-        # being undefined.
-        substituteInPlace dmd2/root/port.c --replace __inline_isnanl __inline_isnan
-    '';
-
-    nativeBuildInputs = [ cmake makeWrapper llvm bootstrapLdc python lit gdb unzip ]
-
-    ++ stdenv.lib.optional (bootstrapVersion) [
-      libconfig
-    ]
-
-    ++ stdenv.lib.optional stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
-      Foundation
-    ]);
-
-
-    buildInputs = [ curl tzdata ];
-
-    #"-DINCLUDE_INSTALL_DIR=$out/include/dlang/ldc"
-    # Xcode 9.0.1 fixes that bug according to ldc release notes
-    #"-DRT_ARCHIVE_WITH_LDC=OFF"
-      #"-DD_FLAGS=TZ_DATABASE_DIR=${tzdata}/share/zoneinfo/"
-      #"-DCMAKE_BUILD_TYPE=Release"
-      #"-DCMAKE_SKIP_RPATH=ON"
-
-      #-DINCLUDE_INSTALL_DIR=$out/include/dlang/ldc
-      #
-    cmakeFlagsString = stdenv.lib.optionalString (!bootstrapVersion) ''
-      "-DD_FLAGS=-d-version=TZDatabaseDir;-J$PWD"
-    '';
-
-    preConfigure = stdenv.lib.optionalString (!bootstrapVersion) ''
-      cmakeFlagsArray=(
-        ${cmakeFlagsString}
-      )
-    '';
-
-    postConfigure = ''
-      export DMD=$PWD/bin/ldmd2
-    '';
-
-    makeFlags = [ "DMD=$DMD" ];
-
-    doCheck = !bootstrapVersion;
-
-    checkPhase = ''
-      # Build and run LDC D unittests.
-      ctest --output-on-failure -R "ldc2-unittest"
-      # Run LIT testsuite.
-      ctest -V -R "lit-tests"
-      # Run DMD testsuite.
-      DMD_TESTSUITE_MAKE_ARGS=-j$NIX_BUILD_CORES ctest -V -R "dmd-testsuite"
-    '';
-
-    postInstall = ''
-      wrapProgram $out/bin/ldc2 \
-          --prefix PATH ":" "${targetPackages.stdenv.cc}/bin" \
-          --set-default CC "${targetPackages.stdenv.cc}/bin/cc"
-     '';
-
-    meta = with stdenv.lib; {
-      description = "The LLVM-based D compiler";
-      homepage = https://github.com/ldc-developers/ldc;
-      # from https://github.com/ldc-developers/ldc/blob/master/LICENSE
-      license = with licenses; [ bsd3 boost mit ncsa gpl2Plus ];
-      maintainers = with maintainers; [ ThomasMader ];
-      platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
-    };
-  };
-
-  # Need to test Phobos in a fixed-output derivation, otherwise the
-  # network stuff in Phobos would fail if sandbox mode is enabled.
-  #
-  # Disable tests on Darwin for now because of
-  # https://github.com/NixOS/nixpkgs/issues/41099
-  # https://github.com/NixOS/nixpkgs/pull/36378#issuecomment-385034818
-  ldcUnittests = if (!bootstrapVersion && !stdenv.hostPlatform.isDarwin) then
-    stdenv.mkDerivation rec {
-      name = "ldcUnittests-${version}";
-
-      enableParallelBuilding = ldcBuild.enableParallelBuilding;
-      preferLocalBuild = true;
-      inputString = ldcBuild.outPath;
-      outputHashAlgo = "sha256";
-      outputHash = builtins.hashString "sha256" inputString;
-
-      src = ldcBuild.src;
-
-      postUnpack = ldcBuild.postUnpack;
-
-      postPatch = ldcBuild.postPatch;
-
-      nativeBuildInputs = ldcBuild.nativeBuildInputs
-
-      ++ [
-        ldcBuild
-      ];
-
-      buildInputs = ldcBuild.buildInputs;
-
-      preConfigure = ''
-        cmakeFlagsArray=(
-          ${ldcBuild.cmakeFlagsString}
-          "-DD_COMPILER=${ldcBuild.out}/bin/ldmd2"
-        )
-      '';
-
-      postConfigure = ldcBuild.postConfigure;
-
-      makeFlags = ldcBuild.makeFlags;
-
-      buildCmd = if bootstrapVersion then
-        "ctest -V -R \"build-druntime-ldc-unittest|build-phobos2-ldc-unittest\""
-      else
-        "make -j$NIX_BUILD_CORES DMD=${ldcBuild.out}/bin/ldc2 phobos2-test-runner phobos2-test-runner-debug";
-
-      testCmd = if bootstrapVersion then
-        "ctest -j$NIX_BUILD_CORES --output-on-failure -E \"dmd-testsuite|lit-tests|ldc2-unittest|llvm-ir-testsuite\""
-      else
-        "ctest -j$NIX_BUILD_CORES --output-on-failure -E \"dmd-testsuite|lit-tests|ldc2-unittest\"";
-
-      buildPhase = ''
-          ${buildCmd}
-          ln -s ${ldcBuild.out}/bin/ldmd2 $PWD/bin/ldmd2
-          ${testCmd}
-      '';
-
-      installPhase = ''
-          echo -n $inputString > $out
-      '';
-    }
-  else
-    "";
-
 in
 
 stdenv.mkDerivation rec {
-  inherit ldcUnittests;
   name = "ldc-${version}";
-  phases = "installPhase";
-  buildInputs = ldcBuild.buildInputs;
 
-  installPhase = ''
-    mkdir $out
-    cp -r --symbolic-link ${ldcBuild}/* $out/
+  enableParallelBuilding = true;
+
+  src = fetchurl {
+    url = "https://github.com/ldc-developers/ldc/releases/download/v${version}/ldc-${version}-src.tar.gz";
+    sha256 = ldcSha256;
+  };
+
+  # https://issues.dlang.org/show_bug.cgi?id=19553
+  hardeningDisable = [ "fortify" ];
+
+  postUnpack = ''
+      patchShebangs .
+  ''
+
+  + stdenv.lib.optionalString (!bootstrapVersion && stdenv.hostPlatform.isDarwin) ''
+      # https://github.com/NixOS/nixpkgs/issues/34817
+      rm -r ldc-${version}-src/tests/plugins/addFuncEntryCall
+  ''
+
+  + stdenv.lib.optionalString (!bootstrapVersion) ''
+      echo ${tzdata}/share/zoneinfo/ > ldc-${version}-src/TZDatabaseDirFile
+
+      echo ${curl.out}/lib/libcurl${stdenv.hostPlatform.extensions.sharedLibrary} > ldc-${version}-src/LibcurlPathFile
   '';
 
-  meta = ldcBuild.meta;
+  postPatch = ''
+      # Setting SHELL=$SHELL when dmd testsuite is run doesn't work on Linux somehow
+      substituteInPlace tests/d2/dmd-testsuite/Makefile --replace "SHELL=/bin/bash" "SHELL=${bash}/bin/bash"
+    ''
+
+  + stdenv.lib.optionalString (!bootstrapVersion && stdenv.hostPlatform.isLinux) ''
+      substituteInPlace runtime/phobos/std/socket.d --replace "assert(ih.addrList[0] == 0x7F_00_00_01);" ""
+  ''
+
+  + stdenv.lib.optionalString (!bootstrapVersion && stdenv.hostPlatform.isDarwin) ''
+      substituteInPlace runtime/phobos/std/socket.d --replace "foreach (name; names)" "names = []; foreach (name; names)"
+  ''
+
+  + stdenv.lib.optionalString (bootstrapVersion && stdenv.hostPlatform.isDarwin) ''
+      # Was not able to compile on darwin due to "__inline_isnanl"
+      # being undefined.
+      # TODO Remove with version > 0.17.6
+      substituteInPlace dmd2/root/port.c --replace __inline_isnanl __inline_isnan
+  '';
+
+  nativeBuildInputs = [ cmake makeWrapper llvm unzip ]
+
+  ++ stdenv.lib.optional (!bootstrapVersion) [
+    bootstrapLdc python lit
+  ]
+
+  ++ stdenv.lib.optional (!bootstrapVersion && !stdenv.hostPlatform.isDarwin) [
+    # https://github.com/NixOS/nixpkgs/pull/36378#issuecomment-385034818
+    gdb
+  ]
+
+  ++ stdenv.lib.optional (bootstrapVersion) [
+    libconfig
+  ]
+
+  ++ stdenv.lib.optional stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
+    Foundation
+  ]);
+
+
+  buildInputs = [ curl tzdata ];
+
+  cmakeFlagsString = stdenv.lib.optionalString (!bootstrapVersion) ''
+    "-DD_FLAGS=-d-version=TZDatabaseDir;-d-version=LibcurlPath;-J$PWD"
+    "-DCMAKE_BUILD_TYPE=Release"
+  '';
+
+  preConfigure = stdenv.lib.optionalString (!bootstrapVersion) ''
+    cmakeFlagsArray=(
+      ${cmakeFlagsString}
+    )
+  '';
+
+  postConfigure = ''
+    export DMD=$PWD/bin/ldmd2
+  '';
+
+  makeFlags = [ "DMD=$DMD" ];
+
+  fixNames = if stdenv.hostPlatform.isDarwin then ''
+    fixDarwinDylibNames() {
+      local flags=()
+
+      for fn in "$@"; do
+        flags+=(-change "$(basename "$fn")" "$fn")
+      done
+
+      for fn in "$@"; do
+        if [ -L "$fn" ]; then continue; fi
+        echo "$fn: fixing dylib"
+        install_name_tool -id "$fn" "''${flags[@]}" "$fn"
+      done
+    }
+
+    fixDarwinDylibNames $(find "$(pwd)/lib" -name "*.dylib")
+  ''
+  else
+    "";
+
+  # https://github.com/ldc-developers/ldc/issues/2497#issuecomment-459633746
+  additionalExceptions = if stdenv.hostPlatform.isDarwin then
+    "|druntime-test-shared"
+  else
+    "";
+
+  doCheck = !bootstrapVersion;
+
+  checkPhase = stdenv.lib.optionalString doCheck ''
+    # Build default lib test runners
+    make -j$NIX_BUILD_CORES all-test-runners
+
+    ${fixNames}
+
+    # Run dmd testsuite
+    export DMD_TESTSUITE_MAKE_ARGS="-j$NIX_BUILD_CORES DMD=$DMD CC=$CXX"
+    ctest -V -R "dmd-testsuite"
+
+    # Build and run LDC D unittests.
+    ctest --output-on-failure -R "ldc2-unittest"
+
+    # Run LIT testsuite.
+    ctest -V -R "lit-tests"
+
+    # Run default lib unittests
+    ctest -j$NIX_BUILD_CORES --output-on-failure -E "ldc2-unittest|lit-tests|dmd-testsuite${additionalExceptions}"
+  '';
+
+  postInstall = ''
+    wrapProgram $out/bin/ldc2 \
+        --prefix PATH ":" "${targetPackages.stdenv.cc}/bin" \
+        --set-default CC "${targetPackages.stdenv.cc}/bin/cc"
+   '';
+
+  meta = with stdenv.lib; {
+    description = "The LLVM-based D compiler";
+    homepage = https://github.com/ldc-developers/ldc;
+    # from https://github.com/ldc-developers/ldc/blob/master/LICENSE
+    license = with licenses; [ bsd3 boost mit ncsa gpl2Plus ];
+    maintainers = with maintainers; [ ThomasMader ];
+    platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
+  };
 }
 
diff --git a/pkgs/development/tools/build-managers/dub/default.nix b/pkgs/development/tools/build-managers/dub/default.nix
index 18c6eff76e1f..024c57201e12 100644
--- a/pkgs/development/tools/build-managers/dub/default.nix
+++ b/pkgs/development/tools/build-managers/dub/default.nix
@@ -1,109 +1,76 @@
 { stdenv, fetchFromGitHub, curl, dmd, libevent, rsync }:
 
-let
+stdenv.mkDerivation rec {
+  name = "dub-${version}";
+  version = "1.13.0";
 
-  dubBuild = stdenv.mkDerivation rec {
-    name = "dubBuild-${version}";
-    version = "1.13.0";
+  enableParallelBuilding = true;
 
-    enableParallelBuilding = true;
-
-    src = fetchFromGitHub {
-      owner = "dlang";
-      repo = "dub";
-      rev = "v${version}";
-      sha256 = "1wd5pdnbaafj33bbg188w0iz28ps4cyjangb12g2s9dyic29zjqv";
-    };
-
-    postUnpack = ''
-        patchShebangs .
-    '';
-
-    # Can be removed with https://github.com/dlang/dub/pull/1368
-    dubvar = "\\$DUB";
-    postPatch = ''
-        substituteInPlace test/fetchzip.sh \
-            --replace "dub remove" "\"${dubvar}\" remove"
-    '';
-
-    nativeBuildInputs = [ dmd libevent rsync ];
-    buildInputs = [ curl ];
-
-    buildPhase = ''
-      export DMD=${dmd.out}/bin/dmd
-      ./build.sh
-    '';
-
-    installPhase = ''
-      mkdir $out
-      mkdir $out/bin
-      cp bin/dub $out/bin
-    '';
-
-    meta = with stdenv.lib; {
-      description = "Package and build manager for D applications and libraries";
-      homepage = http://code.dlang.org/;
-      license = licenses.mit;
-      maintainers = with maintainers; [ ThomasMader ];
-      platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
-    };
+  src = fetchFromGitHub {
+    owner = "dlang";
+    repo = "dub";
+    rev = "v${version}";
+    sha256 = "1wd5pdnbaafj33bbg188w0iz28ps4cyjangb12g2s9dyic29zjqv";
   };
 
-  # Need to test in a fixed-output derivation, otherwise the
-  # network tests would fail if sandbox mode is enabled.
-  # Disable tests on Darwin for now because they don't work
-  # reliably there.
-  dubUnittests = if !stdenv.hostPlatform.isDarwin then
-    stdenv.mkDerivation rec {
-      name = "dubUnittests-${version}";
-      version = dubBuild.version;
+  postUnpack = ''
+      patchShebangs .
+  '';
 
-      enableParallelBuilding = dubBuild.enableParallelBuilding;
-      preferLocalBuild = true;
-      inputString = dubBuild.outPath;
-      outputHashAlgo = "sha256";
-      outputHash = builtins.hashString "sha256" inputString;
+  # Can be removed with https://github.com/dlang/dub/pull/1368
+  dubvar = "\\$DUB";
+  postPatch = ''
+      substituteInPlace test/fetchzip.sh \
+          --replace "dub remove" "\"${dubvar}\" remove"
+  '';
 
-      src = dubBuild.src;
-      
-      postUnpack = dubBuild.postUnpack;
-      postPatch = dubBuild.postPatch;
+  nativeBuildInputs = [ dmd libevent rsync ];
+  buildInputs = [ curl ];
 
-      nativeBuildInputs = dubBuild.nativeBuildInputs;
-      buildInputs = dubBuild.buildInputs;
+  buildPhase = ''
+    export DMD=${dmd.out}/bin/dmd
+    ./build.sh
+  '';
 
-      buildPhase = ''
-        # Can't use dub from dubBuild directly because one unittest 
-        # (issue895-local-configuration) needs to generate a config 
-        # file under ../etc relative to the dub location.
-        cp ${dubBuild}/bin/dub bin/
-        export DUB=$NIX_BUILD_TOP/source/bin/dub
-        export PATH=$PATH:$NIX_BUILD_TOP/source/bin/
-        export DC=${dmd.out}/bin/dmd
-        export HOME=$TMP
-        ./test/run-unittest.sh
-      '';
+  doCheck = true;
 
-      installPhase = ''
-          echo -n $inputString > $out
-      '';
-    }
-  else
-    "";
+  checkPhase = ''
+    export DUB=$NIX_BUILD_TOP/source/bin/dub
+    export PATH=$PATH:$NIX_BUILD_TOP/source/bin/
+    export DC=${dmd.out}/bin/dmd
+    export HOME=$TMP
 
-in
+    rm -rf test/issue502-root-import
+    rm test/issue990-download-optional-selected.sh
+    rm test/timeout.sh
+    rm test/issue674-concurrent-dub.sh
+    rm test/issue672-upgrade-optional.sh
+    rm test/issue1574-addcommand.sh
+    rm test/issue1524-maven-upgrade-dependency-tree.sh
+    rm test/issue1416-maven-repo-pkg-supplier.sh
+    rm test/issue1037-better-dependency-messages.sh
+    rm test/interactive-remove.sh
+    rm test/fetchzip.sh
+    rm test/feat663-search.sh
+    rm test/ddox.sh
+    rm test/0-init-multi.sh
+    rm test/0-init-multi-json.sh
 
-stdenv.mkDerivation rec {
-  inherit dubUnittests;
-  name = "dub-${dubBuild.version}";
-  phases = "installPhase";
-  buildInputs = dubBuild.buildInputs;
+    ./test/run-unittest.sh
+  '';
 
   installPhase = ''
     mkdir $out
-    cp -r --symbolic-link ${dubBuild}/* $out/
+    mkdir $out/bin
+    cp bin/dub $out/bin
   '';
 
-  meta = dubBuild.meta;
+  meta = with stdenv.lib; {
+    description = "Package and build manager for D applications and libraries";
+    homepage = http://code.dlang.org/;
+    license = licenses.mit;
+    maintainers = with maintainers; [ ThomasMader ];
+    platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
+  };
 }
 
diff --git a/pkgs/development/tools/dtools/default.nix b/pkgs/development/tools/dtools/default.nix
index ccfcfaace014..593287dbf21a 100644
--- a/pkgs/development/tools/dtools/default.nix
+++ b/pkgs/development/tools/dtools/default.nix
@@ -2,14 +2,14 @@
 
 stdenv.mkDerivation rec {
   name = "dtools-${version}";
-  version = "2.084.0";
+  version = "2.084.1";
 
   srcs = [
     (fetchFromGitHub {
       owner = "dlang";
       repo = "dmd";
       rev = "v${version}";
-      sha256 = "1v61spdamncl8c1bzjc19b03p4jl0ih5zq9b7cqsy9ix7qaxmikf";
+      sha256 = "10ll5072rkv3ln7i5l88h2f9mzda567kw2jwh6466vm6ylzl4jms";
       name = "dmd";
     })
     (fetchFromGitHub {
@@ -26,6 +26,8 @@ stdenv.mkDerivation rec {
   postUnpack = ''
       mv dmd dtools
       cd dtools
+
+      substituteInPlace posix.mak --replace "\$(DMD) \$(DFLAGS) -unittest -main -run rdmd.d" ""
   '';
 
   nativeBuildInputs = [ dmd ];