these 3 derivations will be built:
  /nix/store/4774zrxb02fb6d62yz03lcl2gqh8lffh-hol_guard-3.31.0.tar.gz.drv
  /nix/store/jjbfmq337gzidavfx9fgv4f29nnr22ah-hol-guard-3.31.0.drv
  /nix/store/67lar0c6ichps83d59ikks9vix13y8vi-check-hol-guard.drv