these 3 derivations will be built:
  /nix/store/y6cyxvc5kp2pbimfxnkjr7z7sm1wxpl3-source.drv
  /nix/store/m2m2cy84537d0f0cxbni6sl93mhx4wgs-gno-2.7.0.drv
  /nix/store/155hnm2sj6dmpy2swhch1l4qdb262755-check-gno.drv