Nix shell definition for Purescript

default.nix

with import <nixpkgs> {}; let
  runtimeLibs = [ gmp nodejs haskellPackages.stack ghc ncurses ];
  libPaths    = map (x: ":${x}/lib") runtimeLibs;
in rec {
  env = stdenv.mkDerivation {
    name            = "purescript";
    buildInputs     = [ stdenv haskellPackages.stack ghc ncurses ];
    LD_LIBRARY_PATH = lib.foldl (x: y: x + y) "" libPaths;
    shellHook = ''
      export PATH=$PATH:$HOME/.local/bin/
    '';
  };
}

# from dir with default.nix
$ nix-shell .
# First time install
$ stack --no-install-ghc install purescript
# Install pulp
$ npm install pulp