these 5 derivations will be built:
  /nix/store/x2fmrp4wvq2vs6wq28mw05piv4zy2bmx-clan-runtime.drv
  /nix/store/nhq2n80a2g3h7i9kca9wz2q1n7hdh0yi-clan-cli-source.drv
  /nix/store/0v7dsm31q5bjzwdwy91anx4gqyhvcvjs-clan-cli.drv
  /nix/store/mnpclrvr7gffhsmvqyl1cr8ijcjqs34b-closure-info.drv
  /nix/store/ry5jwbsg86j37x8li1fk56ffz3x6621b-check-vars.drv
error: path '/nix/store/zg5sjfma4whjwpb0cckwaa8h94i19gjb-check-vars' is not valid
error: Cannot build '/nix/store/ry5jwbsg86j37x8li1fk56ffz3x6621b-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/zg5sjfma4whjwpb0cckwaa8h94i19gjb-check-vars