these 5 derivations will be built:
  /nix/store/0v0z8j9hhdnk1ga9h02dc1ypqb7cznf6-closure-info.drv
  /nix/store/6szvpwl4syw3xcz99h4kmys9y5rsn5i4-clan-runtime.drv
  /nix/store/3g5vrr92zpjz4jsxzlxf3104fzs3qh7d-clan-cli-source.drv
  /nix/store/skmwqvalvbvs4pz9kh1cssi1gw4gniac-clan-cli.drv
  /nix/store/r4axmrak3xkjqsnzdbcm262znvpd8cia-check-vars.drv
error: path '/nix/store/0m82djwcdgvv89ia1vy5gsqk60axhscd-check-vars' is not valid
error: Cannot build '/nix/store/r4axmrak3xkjqsnzdbcm262znvpd8cia-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/0m82djwcdgvv89ia1vy5gsqk60axhscd-check-vars