self: super:

let
  buildCabal = sel: name:
    sel.callCabal2nix name super.sources.${name} {};
  buildCabalSubdir = sel: {name, src ? super.sources.${name}, subdir ? name}:
    sel.callCabal2nix name (src + "/${subdir}") {};
  ghc = "ghc884";
in rec
{
  haskell = super.haskell // {
    packages = super.haskell.packages // {
      "${ghc}" = super.haskell.packages."${ghc}".override (old: {
        overrides = with super.pkgs.haskell.lib; sel: sup:
          super.overridePinnedDeps (buildCabal sel) // {
          acid-state = dontCheck sup.acid-state; # mac: "too many open files"
          ghcjs-base = null; # otherwise ghc tries to build this via overridePinnedDeps
          servant-auth = buildCabalSubdir sel {name = "servant-auth";};
          servant-server = doJailbreak sup.servant-server;
          stripe-haskell = dontCheck sup.stripe-haskell;
          stripe-http-client = dontCheck sup.stripe-http-client;
          temporary = dontCheck sup.temporary;
          wai-middleware-metrics = dontCheck sup.wai-middleware-metrics;
        };
      });
      #ghcjs86 = pkgs.haskell.packages.ghcjs86.override (old: {
      #  overrides = with pkgs.haskell.lib; sel: sup:
      #    super.overridePinnedDeps (buildCabal sel) // {
      #    Glob = dontCheck sup.Glob;
      #    QuickCheck = dontCheck sup.QuickCheck;
      #    aeson = dontCheck sup.aeson;
      #    base-compat-batteries = dontCheck sup.base-compat-batteries;
      #    clay = dontCheck sup.clay;
      #    comonad = dontCheck sup.comonad;
      #    ghcjs-base = dontCheck (buildCabal sel "ghcjs-base");
      #    jsaddle-warp = dontCheck (buildCabalSubdir sel {
      #      name = "jsaddle-warp";
      #      src = pkgs.sources.jsaddle;
      #    });
      #    http-types = dontCheck sup.http-types;
      #    network-uri= dontCheck sup.network-uri;
      #    scientific = dontCheck sup.scientific; # takes forever
      #    servant = dontCheck sup.servant;
      #    servant-auth = buildCabalSubdir sel "servant-auth";
      #    tasty-quickcheck = dontCheck sup.tasty-quickcheck;
      #    temporary = dontCheck sup.temporary;
      #    time-compat = dontCheck sup.time-compat;
      #    vector = dontCheck sup.vector;
      #  };
      #});
    };
  };

  autogen = super.autogen.overrideAttrs (old: old // {
    buildInputs = super.lib.lists.remove super.guile old.buildInputs ++ [super.guile_2_0];
  });
  guile-opengl = super.callPackage ./Deps/guile-opengl.nix {};
  # The libfive build is broken...
  #inspekt3d = super.callPackage ./Deps/inspekt3d.nix {};
  guix = super.pkgs.stdenv.mkDerivation rec {
    pname = "guix";
    name = "${pname}-${version}";
    version = super.sources.guix.version;
    src = super.sources.guix;
    buildInputs = with super.pkgs; [
      guile
    # guile-gcrypt
    # guile-sql
    # guile-zlib
    # guile-lzlib
    # guile-avahi
    # guile-git
    # guile-json
      gnutls
      gnumake
      sqlite
      libgcrypt
      gcc
    ];
  };
}