Nix + R with custom packages

..-slash-nix-slash-r-slash-default.nix

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

let

  rLibs = [ nixpkgs.pkgs.rPackages.tseries nixpkgs.pkgs.rPackages.forecast ];

  r = nixpkgs.rWrapper.override {
    packages = [ rLibs ];
  };

in

  r

default.nix

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

let

  common = import ../common { inherit nixpkgs; };
  frontend = import ../frontend { inherit nixpkgs; };
  r = import ../nix/r { inherit nixpkgs; };

  overrides = drv: {
    buildInputs = drv.buildInputs ++ [r];
  };

  backend = nixpkgs.pkgs.haskellPackages.callCabal2nix
    "backend" ./. { common = common; };

  app = (nixpkgs.haskell.lib.dontHaddock backend)
    .overrideAttrs overrides;

in

  app

shell.nix

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

let

  r = import ../nix/r { inherit nixpkgs; };

in

(nixpkgs.pkgs.haskell.lib.addBuildTools (import ./. {})
 (with nixpkgs.pkgs ;
    [
      cabal-install
      haskellPackages.ghcid
      r
    ]
  )
).env