lean2: 2017-07-22 -> 2018-10-01, unbreak

pkgs/applications/science/logic/lean2/default.nix

···
+{ lib, stdenv, fetchpatch, fetchFromGitHub, cmake, gmp, mpfr, python3
+, jemalloc, ninja, makeWrapper }:
+
+stdenv.mkDerivation {
+  pname = "lean2";
+  version = "2018-10-01";
+
+  src = fetchFromGitHub {
+    owner  = "leanprover";
+    repo   = "lean2";
+    rev    = "8072fdf9a0b31abb9d43ab894d7a858639e20ed7";
+    sha256 = "12bscgihdgvaq5xi0hqf5r4w386zxm3nkx1n150lv5smhg8ga3gg";
+  };
+
+  patches = [
+    # https://github.com/leanprover/lean2/pull/13
+    (fetchpatch {
+      name = "lean2-fix-compilation-error.patch";
+      url = "https://github.com/collares/lean2/commit/09b316ce75fd330b3b140d138bcdae2b0e909234.patch";
+      sha256 = "060mvqn9y8lsn4l20q9rhamkymzsgh0r1vzkjw78gnj8kjw67jl5";
+    })
+  ];
+  nativeBuildInputs = [ cmake makeWrapper ninja ];
+  buildInputs = [ gmp mpfr python3 jemalloc ];
+
+  preConfigure = ''
+    patchShebangs bin/leantags
+    cd src
+  '';
+
+  cmakeFlags = [ "-GNinja" ];
+
+  postInstall = ''
+    wrapProgram $out/bin/linja --prefix PATH : $out/bin:${ninja}/bin
+  '';
+
+  meta = with lib; {
+    description = "Automatic and interactive theorem prover (version with HoTT support)";
+    homepage    = "http://leanprover.github.io";
+    license     = licenses.asl20;
+    platforms   = platforms.unix;
+    maintainers = with maintainers; [ thoughtpolice gebner ];
+    broken      = stdenv.isAarch64;
+    mainProgram = "lean";
+  };
+}

pkgs/top-level/all-packages.nix

···
   keymapviz = callPackage ../tools/misc/keymapviz { };
 
   lean = callPackage ../applications/science/logic/lean {};
+  lean2 = callPackage ../applications/science/logic/lean2 {};
   lean3 = lean;
   elan = callPackage ../applications/science/logic/elan {};
   mathlibtools = with python3Packages; toPythonApplication mathlibtools;