smljnBootstrap: new expression for running smlnj on darwin

pkgs/development/compilers/smlnj/bootstrap.nix

@@ -0,0 +1,43 @@
+{ stdenv, fetchurl, cpio, rsync, makeWrapper }:
+
+stdenv.mkDerivation rec {
+  name = "smlnj-bootstrap-${version}";
+
+  version = "110.76";
+
+  src = fetchurl {
+    url = "http://smlnj.cs.uchicago.edu/dist/working/${version}/smlnj-x86-${version}.pkg";
+    sha256 = "0n3kdlqffqw97piya7i4lddrhjml2dp1q9hfq2jrd2hbzln8vdjf";
+  };
+
+  buildInputs = [ cpio rsync makeWrapper ];
+
+  unpackPhase = ''
+    /usr/bin/xar -xf $src
+    cd smlnj.pkg
+  '';
+
+  buildPhase = ''
+    cat Payload | gunzip -dc | cpio -i
+  '';
+
+  installPhase = ''
+    ensureDir $out/bin
+    rsync -av bin/ $out/bin/
+
+    ensureDir $out/lib
+    rsync -av lib/ $out/lib/
+  '';
+
+  postInstall = ''
+    wrapProgram "$out/bin/sml" --set "SMLNJ_HOME" "$out"
+  '';
+
+  meta = {
+    description = "Compiler for the Standard ML '97 programming language";
+    homepage    = http://www.smlnj.org;
+    license     = stdenv.lib.licenses.free;
+    platforms   = stdenv.lib.platforms.darwin;
+    maintainers = [ stdenv.lib.maintainers.jwiegley ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -3303,6 +3303,7 @@ let
 
   sdcc = callPackage ../development/compilers/sdcc { };
 
+  smlnjBootstrap = callPackage ../development/compilers/smlnj/bootstrap.nix { };
   smlnj = callPackage_i686 ../development/compilers/smlnj { };
 
   stalin = callPackage ../development/compilers/stalin { };