these 3 derivations will be built:
  /nix/store/shi5ascfxf69n4yvypqfd722njd2nkay-magpie.desktop.drv
  /nix/store/8cx9y4ya9x2sb7mmsh8svxilic69lrwi-magpie-0.1.660.drv
  /nix/store/6g9v3r8n7v953qpcjm8dicgxb8p3dp4n-check-magpie.drv