nixpkgs: add lean-20150328, a theorem prover.

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

pkgs/applications/science/logic/lean/default.nix

@@ -0,0 +1,28 @@
+{ stdenv, fetchFromGitHub, cmake, gmp, mpfr, luajit, boost, python
+, gperftools, ninja }:
+
+stdenv.mkDerivation rec {
+  name = "lean-20150328";
+
+  src = fetchFromGitHub {
+    owner  = "leanprover";
+    repo   = "lean";
+    rev    = "1b15036dba469020d37f7d6b77b88974d8a36cb1";
+    sha256 = "0w38g83gp7d3ybfiz9jpl2jz3ljad70bxmar0dnnv45wx42clg96";
+  };
+
+  buildInputs = [ gmp mpfr luajit boost cmake python gperftools ninja ];
+  enableParallelBuilding = true;
+
+  preConfigure = "cd src";
+
+  cmakeFlags = [ "-DCMAKE_BUILD_TYPE=Release" ];
+
+  meta = {
+    description = "Automatic and interactive theorem prover";
+    homepage    = "http://leanprover.github.io";
+    license     = stdenv.lib.licenses.asl20;
+    platforms   = stdenv.lib.platforms.unix;
+    maintainers = [ stdenv.lib.maintainers.thoughtpolice ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -13370,6 +13370,8 @@ let
 
   iprover = callPackage ../applications/science/logic/iprover {};
 
+  lean = callPackage ../applications/science/logic/lean {};
+
   leo2 = callPackage ../applications/science/logic/leo2 {};
 
   logisim = callPackage ../applications/science/logic/logisim {};