these 5 derivations will be built:
  /nix/store/57iyrfcb67vl8y62bfjw9lyvsj195vh1-closure-info.drv
  /nix/store/ih4m7hsn9h4sn8pd3v8kg7r1brj1abfq-clan-runtime.drv
  /nix/store/i3vkmkhna1gbfa5zzywvwapgag1qcb6z-clan-cli-source.drv
  /nix/store/mgnwcj3vvsf8mav37siyv4hvi84jf8nv-clan-cli.drv
  /nix/store/b35mjpqnhyqkvaa5f1n4yclxm0hmn03x-check-vars.drv
error: path '/nix/store/rkpcx5bdi1n4yv614yqn9zalivjhlyl9-check-vars' is not valid
error: Cannot build '/nix/store/b35mjpqnhyqkvaa5f1n4yclxm0hmn03x-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/rkpcx5bdi1n4yv614yqn9zalivjhlyl9-check-vars