these 4 derivations will be built:
  /nix/store/skjvdgd41h0npmpnbpr1ba2v8ydb5lrh-clan-cli-source.drv
  /nix/store/20jfxghl61q3rf3n8ljfycwamxgmigc2-clan-cli.drv
  /nix/store/xix1fdpq2sdi88nnz6m4h68c2bcr6cfi-closure-info.drv
  /nix/store/md3sa54m91k9glfldqzj70i1zbpwf6y6-check-vars.drv
error: path '/nix/store/kffq5lyb5gliv1faa2b0hkfaw1im103p-check-vars' is not valid
error: Cannot build '/nix/store/md3sa54m91k9glfldqzj70i1zbpwf6y6-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/kffq5lyb5gliv1faa2b0hkfaw1im103p-check-vars