these 3 derivations will be built:
  /nix/store/yj1v68lp5lb5jhp1xzi0c59kfawblrmm-pi-src-with-lock.drv
  /nix/store/zl3k0j9izvy6zax8hlms5gvhqwcjnjkb-pi-1.1.0.drv
  /nix/store/vgvld3jg3jn8p9agq4splybqqks71byz-check-pi.drv