diff --git a/pkgs/gf/default.nix b/pkgs/gf/default.nix
new file mode 100644
index 0000000..0dfc76c
--- /dev/null
+++ b/pkgs/gf/default.nix
@@ -0,0 +1,32 @@
+{ haskell
+, haskellPackages
+, stdenv
+, fetchFromGitHub
+, autoreconfHook
+}:
+
+let
+  version = "3.12";
+  src = fetchFromGitHub {
+    owner = "GrammaticalFramework";
+    repo = "gf-core";
+    rev = "release-${version}";
+    hash = "sha256-9sB8tt2eOJT43kv2eaUYRQCzyBZOp6HvJdgGJQgiqks=";
+  };
+  pkg = haskellPackages.callCabal2nixWithOptions "gf" src "--flag=-server" {};
+  gf-pgf = stdenv.mkDerivation {
+    pname = "gf-pgf";
+    version = "0.0.1";
+    src = "${src}/src/runtime/c";
+    nativeBuildInputs = [ autoreconfHook ];
+  };
+in haskell.lib.overrideCabal pkg (prev: {
+  patches = [
+    "${src}/nix/expose-all.patch"
+    "${src}/nix/revert-new-cabal-madness.patch"
+  ];
+  jailbreak = true;
+  configureFlags = [ "-f" "c-runtime" ];
+  librarySystemDepends = [ gf-pgf ];
+  passthru = { inherit gf-pgf; };
+})