let
# https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh
# https://github.com/NixOS/nixpkgs/blob/master/doc/languages-frameworks
let
# https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh
# https://github.com/NixOS/nixpkgs/blob/master/doc/languages-frameworks