{ nixpkgs, haskellPackages }:

let
  jsaddle = nixpkgs.fetchFromGitHub {
    owner = "ghcjs";
    repo = "jsaddle";
    rev = "68208be806c49a2a0c9f037dfac85feae10a8c80";
    sha256 = "0acj0x716ikfb08ndib36jmwxkwq399lvkip46sfkh1ynn0pvc1c";
  };
  miso = nixpkgs.fetchFromGitHub {
    owner = "dmjio";
    repo = "miso";
    rev = "a9c4f0a3a6e7d87f9432dc6cf4b1d0c052bf7ef1";
    sha256 = "1yq5y4vffslm6abnfnggp5m3k6vla6mzcwmhmm23l8yizsvdkwv2";
  };

in

(import ./project.nix nixpkgs) {
  haskellPackages = haskellPackages;
  packages = {
    common = ./common;
    backend = ./backend;
    frontend = ./frontend;
  };
  overrides = self: super: {
    generic-lens = nixpkgs.haskell.lib.dontCheck super.generic-lens;
    jsaddle-warp = nixpkgs.haskell.lib.dontCheck (super.callPackage (jsaddle + "/jsaddle-warp") {});
    jsaddle = super.callPackage (jsaddle + "/jsaddle") {};
    miso = super.callPackage (miso + "/miso-ghc-jsaddle.nix") {};
    haskeline = super.callHackage "haskeline" "0.7.1.0" {};
    terminfo = super.callHackage "terminfo" "0.4.1.1" {};
  };
  tools = with haskellPackages; [
    ghcid
    hasktags
  ];
}