shell.nix

let

rOverlay = rself: rsuper: {
  myR = rsuper.rWrapper.override {
    packages = with rsuper.rPackages; [
      ggplot2
      dplyr
      xts
      purrr
      cmaes
      cubature
    ];
  };
  R = rsuper.R.overrideAttrs (oldAttrs: {
    configureFlags = [ "--without-x" ];
  });
  myHaskellPackages = rsuper.haskellPackages.override {
    overrides = hself: hsuper: rec {
      inline-r = hsuper.inline-r;
    };
  };
};

in

let

  nixpkgs = import <nixpkgs> { config.allowBroken = true; overlays = [ rOverlay ]; };

  haskellDeps = ps: with ps; [
    Frames
    (nixpkgs.haskell.lib.dontCheck inline-r)
    lens text vinyl
  ];

in

  nixpkgs.stdenv.mkDerivation {
  name = "env";
  buildInputs = [
    (nixpkgs.myHaskellPackages.ghcWithPackages haskellDeps)
    nixpkgs.myR
  ];
}