8 files changed, 289 insertions, 186 deletions
diff --git a/pkgs/development/compilers/dmd/binary.nix b/pkgs/development/compilers/dmd/binary.nix
new file mode 100644
index 000000000000..cd3a15889b21
--- /dev/null
+++ b/pkgs/development/compilers/dmd/binary.nix
@@ -0,0 +1,52 @@
+{ stdenv, fetchurl, curl, tzdata, autoPatchelfHook, fixDarwinDylibNames, glibc
+, version, hashes }:
+with stdenv;
+let
+  OS = if hostPlatform.isDarwin then "osx" else hostPlatform.parsed.kernel.name;
+  MODEL = toString hostPlatform.parsed.cpu.bits;
+in mkDerivation {
+  pname = "dmd-bootstrap";
+  inherit version;
+
+  src = fetchurl rec {
+    name = "dmd.${version}.${OS}.tar.xz";
+    url = "http://downloads.dlang.org/releases/2.x/${version}/${name}";
+    sha256 = hashes.${OS} or (throw "missing bootstrap sha256 for OS ${OS}");
+  };
+
+  dontConfigure = true;
+  dontBuild = true;
+
+  nativeBuildInputs = [ fixDarwinDylibNames autoPatchelfHook ];
+  propagatedBuildInputs = [ curl tzdata ] ++ lib.optional hostPlatform.isLinux glibc;
+
+  installPhase = ''
+    mkdir -p $out
+
+    # try to copy model-specific binaries into bin first
+    mv ${OS}/bin${MODEL} $out/bin || true
+
+    mv src license.txt ${OS}/* $out/
+
+    # move man into place
+    mkdir -p $out/share
+    mv man $out/share/
+
+    # move docs into place
+    mkdir -p $out/share/doc
+    mv html/d $out/share/doc/
+
+    # fix paths in dmd.conf (one level less)
+    substituteInPlace $out/bin/dmd.conf --replace "/../../" "/../"
+  '';
+
+  meta = with lib; {
+    inherit version;
+    description = "Digital Mars D Compiler Package";
+    # As of 2.075 all sources and binaries use the boost license
+    license = licenses.boost;
+    maintainers = [ maintainers.lionello ];
+    homepage = "https://dlang.org/";
+    platforms = [ "x86_64-darwin" "i686-linux" "x86_64-linux" ];
+  };
+}
diff --git a/pkgs/development/compilers/dmd/bootstrap.nix b/pkgs/development/compilers/dmd/bootstrap.nix
new file mode 100644
index 000000000000..087781ae2ca4
--- /dev/null
+++ b/pkgs/development/compilers/dmd/bootstrap.nix
@@ -0,0 +1,9 @@
+{ callPackage }:
+callPackage ./binary.nix {
+  version = "2.090.1";
+  hashes = {
+    # Get these from `nix-prefetch-url http://downloads.dlang.org/releases/2.x/2.090.1/dmd.2.090.1.linux.tar.xz` etc..
+    osx = "0rbn7j4dr3q0y09fblpj999bi063pi4230rqd5xgd3gwxxa0cz7l";
+    linux = "1vk6lsvd6y7ccvffd23yial4ig90azaxf2rxc6yvidqd1qhan807";
+  };
+}
diff --git a/pkgs/development/compilers/dmd/default.nix b/pkgs/development/compilers/dmd/default.nix
index 9281e01ad3e2..a6d4f7e1e20a 100644
--- a/pkgs/development/compilers/dmd/default.nix
+++ b/pkgs/development/compilers/dmd/default.nix
@@ -1,11 +1,13 @@
 { stdenv, lib, fetchFromGitHub
 , makeWrapper, unzip, which, writeTextFile
-, curl, tzdata, gdb, darwin, git
-, targetPackages, ldc
-, version ? "2.085.1"
-, dmdSha256 ? "0ccidfcawrcwdpfjwjiln5xwr4ffp8i2hwx52p8zn3xmc5yxm660"
-, druntimeSha256 ? "109f2glsqrlshk06761xlw4r5v22mivp873cq9g5gcax3g00k617"
-, phobosSha256 ? "0giispqqx8j8xg6c0hm7nx77bcahiwic8rvf12sws3sv5pizv8pr"
+, curl, tzdata, gdb, darwin, git, callPackage
+, targetPackages, fetchpatch, bash
+, dmdBootstrap ? callPackage ./bootstrap.nix { }
+, HOST_DMD ? "${dmdBootstrap}/bin/dmd"
+, version ? "2.091.1"
+, dmdSha256 ? "0brz0n84jdkhr4sq4k91w48p739psbhbb1jk2pi9q60psmx353yr"
+, druntimeSha256 ? "0smgpmfriffh110ksski1s5j921kmxbc2zjy0dyj9ksyrxbzklbl"
+, phobosSha256 ? "1n00anajgibrfs1xzvrmag28hvbvkc0w1fwlimqbznvhf28rhrxs"
 }:
 
 let
@@ -51,7 +53,17 @@ stdenv.mkDerivation rec {
   })
   ];
 
-  patchFlags = [ "--directory=dmd" "-p1" ];
+  patchFlags = [ "--directory=dmd" "-p1" "-F3" ];
+  patches = [
+    (fetchpatch {
+     url = "https://github.com/dlang/dmd/commit/4157298cf04f7aae9f701432afd1de7b7e05c30f.patch";
+     sha256 = "0v4xgqmrx5r8vbx5a4v88s0xnm23mam9nm99yfga7s2sxr0hi5p2";
+    })
+    (fetchpatch {
+     url = "https://github.com/dlang/dmd/commit/1b8a4c90b040bf2f0b68a2739de4991315580b13.patch";
+     sha256 = "1iih6aalv4fsw9mbrlrybhngkkchzzrzg7q8zl047w36c0x397cs";
+    })
+  ];
 
   sourceRoot = ".";
 
@@ -62,15 +74,17 @@ stdenv.mkDerivation rec {
       patchShebangs .
   '';
 
-  postPatch = stdenv.lib.optionalString stdenv.hostPlatform.isLinux ''
+  postPatch = ''
+      substituteInPlace dmd/test/dshell/test6952.d --replace "/usr/bin/env bash" "${bash}/bin/bash"
+  ''
+  + 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 ]
+  nativeBuildInputs = [ makeWrapper unzip which gdb git ]
 
   ++ stdenv.lib.optional stdenv.hostPlatform.isDarwin (with darwin.apple_sdk.frameworks; [
     Foundation
@@ -89,7 +103,7 @@ stdenv.mkDerivation rec {
   # 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
+      make -j$NIX_BUILD_CORES -f posix.mak INSTALL_DIR=$out BUILD=release ENABLE_RELEASE=1 PIC=1 HOST_DMD=${HOST_DMD}
       cd ../druntime
       make -j$NIX_BUILD_CORES -f posix.mak BUILD=release ENABLE_RELEASE=1 PIC=1 INSTALL_DIR=$out DMD=${pathToDmd}
       cd ../phobos
@@ -147,8 +161,7 @@ stdenv.mkDerivation rec {
     # Everything is now Boost licensed, even the backend.
     # https://github.com/dlang/dmd/pull/6680
     license = licenses.boost;
-    maintainers = with maintainers; [ ThomasMader ];
+    maintainers = with maintainers; [ ThomasMader lionello ];
     platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
   };
 }
-
diff --git a/pkgs/development/compilers/fstar/default.nix b/pkgs/development/compilers/fstar/default.nix
index b8864584ee6a..548abeff78d0 100644
--- a/pkgs/development/compilers/fstar/default.nix
+++ b/pkgs/development/compilers/fstar/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchFromGitHub, z3, ocamlPackages, makeWrapper }:
+{ stdenv, fetchFromGitHub, z3, ocamlPackages, makeWrapper, installShellFiles }:
 
 stdenv.mkDerivation rec {
   pname = "fstar";
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "0wix7l229afkn6c6sk4nwkfq0nznsiqdkds4ixi2yyf72immwmmb";
   };
 
-  nativeBuildInputs = [ makeWrapper ];
+  nativeBuildInputs = [ makeWrapper installShellFiles ];
 
   buildInputs = with ocamlPackages; [
     z3 ocaml findlib batteries menhir stdint
@@ -33,6 +33,9 @@ stdenv.mkDerivation rec {
   installFlags = [ "-C" "src/ocaml-output" ];
   postInstall = ''
     wrapProgram $out/bin/fstar.exe --prefix PATH ":" "${z3}/bin"
+    installShellCompletion --bash .completion/bash/fstar.exe.bash
+    installShellCompletion --fish .completion/fish/fstar.exe.fish
+    installShellCompletion --zsh --name _fstar.exe .completion/zsh/__fstar.exe
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/development/compilers/ldc/binary.nix b/pkgs/development/compilers/ldc/binary.nix
new file mode 100644
index 000000000000..56d40be86194
--- /dev/null
+++ b/pkgs/development/compilers/ldc/binary.nix
@@ -0,0 +1,41 @@
+{ stdenv, fetchurl, curl, tzdata, autoPatchelfHook, fixDarwinDylibNames, libxml2
+, version, hashes }:
+with stdenv;
+let
+  OS = if hostPlatform.isDarwin then "osx" else hostPlatform.parsed.kernel.name;
+  ARCH = toString hostPlatform.parsed.cpu.name;
+in mkDerivation {
+  pname = "ldc-bootstrap";
+  inherit version;
+
+  src = fetchurl rec {
+    name = "ldc2-${version}-${OS}-${ARCH}.tar.xz";
+    url = "https://github.com/ldc-developers/ldc/releases/download/v${version}/${name}";
+    sha256 = hashes."${OS}-${ARCH}" or (throw "missing bootstrap sha256 for ${OS}-${ARCH}");
+  };
+
+  dontConfigure = true;
+  dontBuild = true;
+
+  nativeBuildInputs = [ fixDarwinDylibNames autoPatchelfHook ];
+
+  buildInputs = lib.optionals stdenv.hostPlatform.isLinux [ libxml2 stdenv.cc.cc ];
+
+  propagatedBuildInputs = [ curl tzdata ];
+
+  installPhase = ''
+    mkdir -p $out
+
+    mv bin etc import lib LICENSE README $out/
+  '';
+
+  meta = with lib; {
+    inherit version;
+    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 lionello ];
+    platforms = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" ];
+  };
+}
diff --git a/pkgs/development/compilers/ldc/bootstrap.nix b/pkgs/development/compilers/ldc/bootstrap.nix
new file mode 100644
index 000000000000..fde4c8426848
--- /dev/null
+++ b/pkgs/development/compilers/ldc/bootstrap.nix
@@ -0,0 +1,10 @@
+{ callPackage }:
+callPackage ./binary.nix {
+  version = "1.19.0";
+  hashes = {
+    # Get these from `nix-prefetch-url https://github.com/ldc-developers/ldc/releases/download/v1.19.0/ldc2-1.19.0-osx-x86_64.tar.xz` etc..
+    osx-x86_64 = "1bp3xkh9zp64dzq8isanib1gacb3nfbl70qv15qygwk1zan6zgy7";
+    linux-x86_64 = "146grr2lwarfk13wgkpyb77xb6b3as1is2rf4s2hipqjmc8biy1h";
+    linux-aarch64  = "1fv6jshfvi15m7masgxq1hgp216qjd5amizrqdf26vhrq3a08li3";
+  };
+}
diff --git a/pkgs/development/compilers/ldc/default.nix b/pkgs/development/compilers/ldc/default.nix
index 19fe2981c833..5a4baabcf8d8 100644
--- a/pkgs/development/compilers/ldc/default.nix
+++ b/pkgs/development/compilers/ldc/default.nix
@@ -1,173 +1,5 @@
-{ stdenv, fetchurl, cmake, ninja, llvm_5, llvm_8, curl, tzdata
-, libconfig, lit, gdb, unzip, darwin, bash
-, callPackage, makeWrapper, runCommand, targetPackages
-, bootstrapVersion ? false
-, version ? "1.17.0"
-, ldcSha256 ? "1aag5jfrng6p4ms0fs90hjbv9bcj3hj8h52r68c3cm6racdajbva"
-}:
-
-let
-  bootstrapLdc = if !bootstrapVersion then
-    # LDC 0.17.x is the last version which doesn't need a working D compiler to
-    # build so we use that version to bootstrap the actual build.
-    callPackage ./default.nix {
-      bootstrapVersion = true;
-      version = "0.17.6";
-      ldcSha256 = "0qf5kbxddgmg3kqzi0kf4bgv8vdrnv16y07hcpm0cwv9mc3qr2w6";
-    }
-  else
-    "";
-
-  pathConfig = runCommand "ldc-lib-paths" {} ''
-    mkdir $out
-    echo ${tzdata}/share/zoneinfo/ > $out/TZDatabaseDirFile
-    echo ${curl.out}/lib/libcurl${stdenv.hostPlatform.extensions.sharedLibrary} > $out/LibcurlPathFile
-  '';
-in
-
-stdenv.mkDerivation rec {
-  pname = "ldc";
-  inherit version;
-
-  enableParallelBuilding = true;
-
-  src = fetchurl {
-    url = "https://github.com/ldc-developers/ldc/releases/download/v${version}/ldc-${version}-src.tar.gz";
-    sha256 = ldcSha256;
-  };
-
-  # https://issues.dlang.org/show_bug.cgi?id=19553
-  hardeningDisable = [ "fortify" ];
-
-  postUnpack = ''
-    patchShebangs .
-  ''
-
-  + stdenv.lib.optionalString (!bootstrapVersion) ''
-      rm ldc-${version}-src/tests/d2/dmd-testsuite/fail_compilation/mixin_gc.d
-      rm ldc-${version}-src/tests/d2/dmd-testsuite/runnable/xtest46_gc.d
-      rm ldc-${version}-src/tests/d2/dmd-testsuite/runnable/testptrref_gc.d
-
-      # test depends on current year
-      rm ldc-${version}-src/tests/d2/dmd-testsuite/compilable/ddocYear.d
-  ''
-
-  + stdenv.lib.optionalString (!bootstrapVersion && stdenv.hostPlatform.isDarwin) ''
-      # https://github.com/NixOS/nixpkgs/issues/34817
-      rm -r ldc-${version}-src/tests/plugins/addFuncEntryCall
-  '';
-
-  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 ninja makeWrapper unzip ]
-    ++ stdenv.lib.optionals (!bootstrapVersion) [
-      bootstrapLdc lit lit.python
-    ]
-    ++ stdenv.lib.optional (!bootstrapVersion && stdenv.hostPlatform.isDarwin)
-      # https://github.com/NixOS/nixpkgs/issues/57120
-      # https://github.com/NixOS/nixpkgs/pull/59197#issuecomment-481972515
-      llvm_5
-    ++ stdenv.lib.optional (!bootstrapVersion && !stdenv.hostPlatform.isDarwin)
-      llvm_8
-    ++ stdenv.lib.optional (!bootstrapVersion && !stdenv.hostPlatform.isDarwin)
-      # https://github.com/NixOS/nixpkgs/pull/36378#issuecomment-385034818
-      gdb
-    ++ stdenv.lib.optionals (bootstrapVersion) [
-      libconfig llvm_5
-    ]
-    ++ stdenv.lib.optional stdenv.hostPlatform.isDarwin
-      darwin.apple_sdk.frameworks.Foundation;
-
-
-  buildInputs = [ curl tzdata ];
-
-  cmakeFlags = stdenv.lib.optionals (!bootstrapVersion) [
-    "-DD_FLAGS=-d-version=TZDatabaseDir;-d-version=LibcurlPath;-J${pathConfig}"
-    "-DCMAKE_BUILD_TYPE=Release"
-  ];
-
-  postConfigure = ''
-    export DMD=$PWD/bin/ldmd2
-  '';
-
-  makeFlags = [ "DMD=$DMD" ];
-
-  fixNames = stdenv.lib.optionalString stdenv.hostPlatform.isDarwin  ''
-    fixDarwinDylibNames() {
-      local flags=()
-
-      for fn in "$@"; 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")
-    export DYLD_LIBRARY_PATH=$(pwd)/lib
-  '';
-
-  # https://github.com/ldc-developers/ldc/issues/2497#issuecomment-459633746
-  additionalExceptions = stdenv.lib.optionalString stdenv.hostPlatform.isDarwin
-    "|druntime-test-shared";
-
-  doCheck = !bootstrapVersion;
-
-  checkPhase = stdenv.lib.optionalString doCheck ''
-    # Build default lib test runners
-    ninja -j$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" ];
-  };
+import ./generic.nix {
+  version = "1.20.1";
+  ldcSha256 = "1bqsgab22v02pc3c9gcyf15y7aimadv24d68icaw5lpgnvzxy89b";
 }
 
diff --git a/pkgs/development/compilers/ldc/generic.nix b/pkgs/development/compilers/ldc/generic.nix
new file mode 100644
index 000000000000..c93d423945cb
--- /dev/null
+++ b/pkgs/development/compilers/ldc/generic.nix
@@ -0,0 +1,143 @@
+{ version, ldcSha256 }:
+{ stdenv, fetchurl, cmake, ninja, llvm_5, llvm_8, curl, tzdata
+, libconfig, lit, gdb, unzip, darwin, bash
+, callPackage, makeWrapper, runCommand, targetPackages
+, ldcBootstrap ? callPackage ./bootstrap.nix { }
+}:
+
+let
+  pathConfig = runCommand "ldc-lib-paths" {} ''
+    mkdir $out
+    echo ${tzdata}/share/zoneinfo/ > $out/TZDatabaseDirFile
+    echo ${curl.out}/lib/libcurl${stdenv.hostPlatform.extensions.sharedLibrary} > $out/LibcurlPathFile
+  '';
+
+in
+
+stdenv.mkDerivation rec {
+  pname = "ldc";
+  inherit version;
+
+  enableParallelBuilding = true;
+
+  src = fetchurl {
+    url = "https://github.com/ldc-developers/ldc/releases/download/v${version}/ldc-${version}-src.tar.gz";
+    sha256 = ldcSha256;
+  };
+
+  # https://issues.dlang.org/show_bug.cgi?id=19553
+  hardeningDisable = [ "fortify" ];
+
+  postUnpack = ''
+    patchShebangs .
+  ''
+  + ''
+      rm ldc-${version}-src/tests/d2/dmd-testsuite/fail_compilation/mixin_gc.d
+      rm ldc-${version}-src/tests/d2/dmd-testsuite/runnable/xtest46_gc.d
+      rm ldc-${version}-src/tests/d2/dmd-testsuite/runnable/testptrref_gc.d
+
+      # test depends on current year
+      rm ldc-${version}-src/tests/d2/dmd-testsuite/compilable/ddocYear.d
+  ''
+  + stdenv.lib.optionalString stdenv.hostPlatform.isDarwin ''
+      # https://github.com/NixOS/nixpkgs/issues/34817
+      rm -r ldc-${version}-src/tests/plugins/addFuncEntryCall
+  '';
+
+  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 stdenv.hostPlatform.isLinux ''
+      substituteInPlace runtime/phobos/std/socket.d --replace "assert(ih.addrList[0] == 0x7F_00_00_01);" ""
+  ''
+  + stdenv.lib.optionalString stdenv.hostPlatform.isDarwin ''
+      substituteInPlace runtime/phobos/std/socket.d --replace "foreach (name; names)" "names = []; foreach (name; names)"
+  '';
+
+  nativeBuildInputs = [
+    cmake ninja makeWrapper unzip ldcBootstrap lit lit.python
+  ]
+  ++ stdenv.lib.optionals stdenv.hostPlatform.isDarwin [
+    darwin.apple_sdk.frameworks.Foundation
+    # https://github.com/NixOS/nixpkgs/issues/57120
+    # https://github.com/NixOS/nixpkgs/pull/59197#issuecomment-481972515
+    llvm_5
+  ]
+  ++ stdenv.lib.optionals (!stdenv.hostPlatform.isDarwin) [
+    llvm_8
+    # https://github.com/NixOS/nixpkgs/pull/36378#issuecomment-385034818
+    gdb
+  ];
+
+  buildInputs = [ curl tzdata ];
+
+  cmakeFlags = [
+    "-DD_FLAGS=-d-version=TZDatabaseDir;-d-version=LibcurlPath;-J${pathConfig}"
+    "-DCMAKE_BUILD_TYPE=Release"
+  ];
+
+  postConfigure = ''
+    export DMD=$PWD/bin/ldmd2
+  '';
+
+  makeFlags = [ "DMD=$DMD" ];
+
+  fixNames = stdenv.lib.optionalString stdenv.hostPlatform.isDarwin  ''
+    fixDarwinDylibNames() {
+      local flags=()
+
+      for fn in "$@"; 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")
+    export DYLD_LIBRARY_PATH=$(pwd)/lib
+  '';
+
+  # https://github.com/ldc-developers/ldc/issues/2497#issuecomment-459633746
+  additionalExceptions = stdenv.lib.optionalString stdenv.hostPlatform.isDarwin
+    "|druntime-test-shared";
+
+  checkPhase = ''
+    # Build default lib test runners
+    ninja -j$NIX_BUILD_CORES all-test-runners
+
+    ${fixNames}
+
+    # Run dmd testsuite
+    export DMD_TESTSUITE_MAKE_ARGS="-j$NIX_BUILD_CORES DMD=$DMD"
+    ctest -V -R "dmd-testsuite"
+
+    # Build and run LDC D unittests.
+    ctest --output-on-failure -R "ldc2-unittest"
+
+    # Run LIT testsuite.
+    ctest -V -R "lit-tests"
+
+    # Run default lib unittests
+    ctest -j$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 lionello ];
+    platforms = [ "x86_64-linux" "i686-linux" "x86_64-darwin" ];
+  };
+}