test.nix

let

  pkgs = {
    ihaskell = builtins.fetchTarball {
      url = "https://github.com/gibiansky/IHaskell/tarball/bb2500c448c35ca79bddaac30b799d42947e8774";
      sha256 = "1n4yqxaf2xcnjfq0r1v7mzjhrizx7z5b2n6gj1kdk2yi37z672py";
    };
    nixpkgs = builtins.fetchTarball {
      url = "https://github.com/NixOS/nixpkgs-channels/tarball/49dc8087a20e0d742d38be5f13333a03d171006a";
      sha256 = "1fdnqm4vyj50jb2ydcc0nldxwn6wm7qakxfhmpf72pz2y2ld55i6";
    };
  };

  rOverlay = rself: rsuper: {
    myR = rsuper.rWrapper.override {
      packages = with rsuper.rPackages; [ ggplot2 dplyr xts purrr ];
    };
  };

in import "${pkgs.ihaskell}/release.nix" {
  compiler = "ghc864";
  nixpkgs  = import pkgs.nixpkgs { overlays = [ rOverlay ]; };
  packages = self: [ self.inline-r ];
  systemPackages = self: [ self.myR ];
}