these 2 derivations will be built:
  /nix/store/9yli16y8q5l17la8dffzn7sg3090jsyd-grok-1.0.13-linux-x86_64.drv
  /nix/store/0vw3dn7w3prdq1c1vfk173aq880h0d3z-grok-1.0.13.drv