cryptol: add a convenient clang/lss wrapper

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

pkgs/development/compilers/cryptol/1.8.x.nix

@@ -1,4 +1,4 @@
-{ stdenv, requireFile, gmp4, ncurses, zlib, makeWrapper }:
+{ stdenv, requireFile, gmp4, ncurses, zlib, clang_33, makeWrapper }:
 
 let
   name    = "cryptol-${version}-${rev}";
@@ -87,6 +87,9 @@ stdenv.mkDerivation rec {
     mv ${lss-ver}/bin/lss $out/bin
     mv ${lss-ver}/sym-api $out/include
 
+    # Create a convenient 'lss-clang' wrapper pointing to a valid Clang verison
+    ln -s ${clang_33}/bin/clang $out/bin/lss-clang
+
     # Hack around lack of libtinfo in NixOS
     ln -s ${ncurses}/lib/libncursesw.so.5.9 $out/lib/libtinfo.so.5
     ln -s ${stdenv.gcc.libc}/lib/libpthread-2.19.so $out/lib/libpthread.so.0