{ pkgs, ... }: {
  environment.systemPackages = with pkgs; [
    #== Python ==#
    python3Minimal

    #== Functional ==#
    racket
    sbcl  # Steel Bank common lisp
    ghc  # Glasgow haskell compiler

    #== Go ==#
    go

    #== PHP ==#
    php

    #== Ruby ==#
    ruby

    #== R ==#
    rstudio
  ];
}