wip: gftest: init

pkgs/pgf2-haskell/default.nix

@@ -0,0 +1,18 @@
+{ haskell
+, compiler ? "ghc96"
+, gf-pgf
+, gf-core
+}:
+
+let
+  src = "${gf-core.src}/src/runtime/haskell-bind";
+  hpkgs = haskell.packages.${compiler};
+  pkg = hpkgs.callCabal2nix "pgf2" src {};
+in haskell.lib.overrideCabal pkg (prev: {
+  patches = (prev.patches or []) ++ [
+    ./fix-cabal-syntax-error.patch
+  ];
+  librarySystemDepends = (prev.librarySystemDepends or []) ++ [
+    gf-pgf
+  ];
+})