shell.nix

{ nixpkgs ? import ./nix/nixpkgs.nix {} }:

let

  haskellDeps = ps: with ps; [
    inline-r
  ];

  ghc = nixpkgs.haskellPackages.ghcWithPackages haskellDeps;

  R-with-my-packages = nixpkgs.rWrapper.override {
    packages = with nixpkgs.rPackages; [ ggplot2 dplyr xts ];
  };

  nixPackages = [
    ghc
    R-with-my-packages
    # nixpkgs.R
    # nixpkgs.rPackages.dplyr
  ];

in

  nixpkgs.stdenv.mkDerivation {
  name = "env";
  buildInputs = nixPackages;
  executableHaskellDepends = [ R-with-my-packages
                               # nixpkgs.R
                               # nixpkgs.rPackages.dplyr
                             ];
}