const cfg = (
  dirs: (
    bin   : "bin",
    src   : "src",
    lib   : ".lib",
    cache : ".cache",
  ), #:: defaults.dirs
) #:: defaults

type Dirs  = object
  bin    :PathLike=  cfg.dirs.bin
  src    :PathLike=  cfg.dirs.src
  lib    :PathLike=  cfg.dirs.bin/cfg.dirs.lib
  cache  :PathLike=  cfg.dirs.bin/cfg.dirs.cache

type Config  = object
  dirs :config.Dirs= config.Dirs.default()

type BuildTarget = object
  cfg    :Config


# Usage
const ok    = Config.default()
const empty = Config()
# Bad idea, but sure. here is the wall 😦