these 3 derivations will be built:
  /nix/store/cc8kmsrads1cbfqjs8wnqw1v77h08vbg-hol_guard-3.7.4.tar.gz.drv
  /nix/store/yn4yirf4267za2chhjasayhqnh608ap6-hol-guard-3.7.4.drv
  /nix/store/j92bklg1h868x2j967wvax33074gy7gv-check-hol-guard.drv