1 files changed, 48 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/development/compilers/fsharp/default.nix b/nixpkgs/pkgs/development/compilers/fsharp/default.nix
new file mode 100644
index 000000000000..2de487cc9c8b
--- /dev/null
+++ b/nixpkgs/pkgs/development/compilers/fsharp/default.nix
@@ -0,0 +1,48 @@
+# Temporarily avoid dependency on dotnetbuildhelpers to avoid rebuilding many times while working on it
+
+{ stdenv, fetchurl, mono, pkgconfig, dotnetbuildhelpers, autoconf, automake, which }:
+
+stdenv.mkDerivation rec {
+  name = "fsharp-${version}";
+  version = "4.0.1.1";
+
+  src = fetchurl {
+    url = "https://github.com/fsharp/fsharp/archive/${version}.tar.gz";
+    sha256 = "0mvmvwwpl4zq0yvgzdizww8l9azvlrc82xm32nz1fi1nw8x5qfqk";
+  };
+
+  nativeBuildInputs = [ pkgconfig ];
+  buildInputs = [ mono dotnetbuildhelpers autoconf automake which ];
+
+  configurePhase = ''
+    sed -i '988d' src/FSharpSource.targets
+    substituteInPlace ./autogen.sh --replace "/usr/bin/env sh" "${stdenv.shell}"
+    ./autogen.sh --prefix $out
+  '';
+
+  # Make sure the executables use the right mono binary,
+  # and set up some symlinks for backwards compatibility.
+  postInstall = ''
+    substituteInPlace $out/bin/fsharpc --replace " mono " " ${mono}/bin/mono "
+    substituteInPlace $out/bin/fsharpi --replace " mono " " ${mono}/bin/mono "
+    substituteInPlace $out/bin/fsharpiAnyCpu --replace " mono " " ${mono}/bin/mono "
+    ln -s $out/bin/fsharpc $out/bin/fsc
+    ln -s $out/bin/fsharpi $out/bin/fsi
+    for dll in "$out/lib/mono/4.5"/FSharp*.dll
+    do
+      create-pkg-config-for-dll.sh "$out/lib/pkgconfig" "$dll"
+    done
+  '';
+
+  # To fix this error when running:
+  # The file "/nix/store/path/whatever.exe" is an not a valid CIL image
+  dontStrip = true;
+
+  meta = {
+    description = "A functional CLI language";
+    homepage = https://fsharp.org/;
+    license = stdenv.lib.licenses.asl20;
+    maintainers = with stdenv.lib.maintainers; [ thoughtpolice raskin ];
+    platforms = with stdenv.lib.platforms; unix;
+  };
+}