these 2 derivations will be built:
  /nix/store/66xp4gri6ng20d94gv1sf2sxf026icq4-niks3-tests-1.4.0.drv
  /nix/store/hd4jgsfzmxcp7qrngxp3yhnq9vg5jx50-niks3-go-unit-tests.drv