hedgehog.nix

let
  pkgs = import <nixpkgs> { inherit config; };

  config = {
    packageOverrides = pkgs: {
      haskellPackages = pkgs.haskellPackages.override {
        overrides = self: super: {
          tmp-postgres = pkgs.haskell.lib.unmarkBroken super.tmp-postgres;
        };
      };
    };
  };

  hp = p: with p; [
    base
    hedgehog
    lifted-base
    monad-control
    mtl
    postgresql-simple
    resource-pool
    text
    time
    tmp-postgres
    transformers
    transformers-base
  ];

  ghc = pkgs.haskellPackages.ghcWithPackages hp;

  env = pkgs.stdenv.mkDerivation {
    name = "env";
    buildInputs = [ ghc pkgs.postgresql ];
  };

  haskellPackages = pkgs.haskellPackages;

  tags = pkgs.callPackage ../haskell-sources-tags-nix/tag-sources.nix {
    inherit pkgs haskellPackages;
    packages = hp haskellPackages;
  };

in

  { inherit env tags; }