nixpkgs: chez scheme 9.4

Signed-off-by: Austin Seipp <aseipp@pobox.com>

pkgs/development/compilers/chez/default.nix

@@ -0,0 +1,48 @@
+{ stdenv, fetchgit, ncurses, libX11 }:
+
+stdenv.mkDerivation rec {
+  name    = "chez-scheme-${version}";
+  version = "9.4-${dver}";
+  dver    = "20160430";
+
+  src = fetchgit {
+    url    = "https://github.com/cisco/ChezScheme.git";
+    rev    = "63a97939896c2a89fcffdf16c8b783efaeb816b5";
+    sha256 = "1c58xjslgn7xnfy9j5p9b6sn0wzv2mk7zlmhflydzil7iimchjsi";
+    fetchSubmodules = true;
+  };
+
+  enableParallelBuilding = true;
+  buildInputs = [ ncurses libX11 ];
+
+  /* Chez uses a strange default search path, which completely
+  ** ignores the installation prefix for some reason, and instead
+  ** defaults to {/usr,/usr/local,$HOME}/lib for finding the .boot
+  ** file.
+  **
+  ** Also, we patch out a very annoying 'feature' in ./configure, too.
+  */
+  patchPhase = ''
+    substituteInPlace c/scheme.c \
+      --replace "/usr/lib/csv" "$out/lib/csv"
+
+    substituteInPlace ./configure \
+      --replace "git submodule init && git submodule update || exit 1" ""
+  '';
+
+  /* Don't use configureFlags, since that just implicitly appends
+  ** everything onto a --prefix flag, which ./configure gets very angry
+  ** about.
+  */
+  configurePhase = ''
+    ./configure --threads --installprefix=$out --installman=$out/share/man
+  '';
+
+  meta = {
+    description = "A powerful and incredibly fast R6RS Scheme compiler";
+    homepage    = "http://www.scheme.com";
+    license     = stdenv.lib.licenses.asl20;
+    platforms   = stdenv.lib.platforms.linux;
+    maintainers = with stdenv.lib.maintainers; [ thoughtpolice ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -4028,6 +4028,8 @@ in
 
   ccl = callPackage ../development/compilers/ccl { };
 
+  chez = callPackage ../development/compilers/chez { };
+
   clang = llvmPackages.clang;
 
   clang_38 = llvmPackages_38.clang;