ghc build env

enter-env

#!/usr/bin/env bash

set -e

name=$(nix-instantiate "$@" -A name --eval | tr -d '\n"')

mkdir -p $HOME/.cache/envs

env=$HOME/.cache/envs/$name

nix-build "$@" -o $env

export PATH=$env/bin:$env/sbin:$PATH
export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE${NIX_CFLAGS_COMPILE+ }-I$env/include -L$env/lib"
bash

env.nix

let
  pkgs = import <nixpkgs> {};

  haskellPackages = pkgs.haskellPackages;
in pkgs.buildEnv {
  name = "ghc-env";

  paths = with pkgs; [
    perl
    gcc
    gnumake
    autoconf
    automake
    diffutils
    xorg.lndir
    gnused
    python
    pythonPackages.sphinx
    libffi
    ncurses.dev
    ncurses
    gmp.dev
    gmp
    (haskellPackages.ghcWithPackages (s: with s; [
      happy
      alex
    ]))
    
  ];
}