these 3 derivations will be built:
  /nix/store/8lzczl8gdldzbg90d7mgl0b59n0m15wh-pi-src-with-lock.drv
  /nix/store/hcx1k52ri1sn6sk9pma85gpzpmjpa8py-pi-0.87.0.drv
  /nix/store/yqwadchnx0sl08ypv55b5bx5f8jasly2-check-pi.drv