these 3 derivations will be built:
  /nix/store/yhqwlcdnpi69zixxhwhn28kmf7n5h46y-skills-src-with-lock.drv
  /nix/store/ljqxz9i51w2mm823g802wdynk29zvml4-skills-1.7.1.drv
  /nix/store/254jmdi10xxgzmsjcrx9s06nzannx7iz-check-skills.drv