these 4 derivations will be built:
  /nix/store/q8nv9isxd49arc5xhmnxspfgm0xl21q4-source.drv
  /nix/store/yqn9a93hi4zanyzam5ybc92s7c9z4pv6-magpie-0.1.3215-go-modules.drv
  /nix/store/5rg0mp454lifd070q5fpz2nrj800rmvg-magpie-0.1.3215.drv
  /nix/store/zk0krpn4a9c49d3wkn655plimvdy7q8z-check-magpie.drv