these 4 derivations will be built:
  /nix/store/bsm7qbd3xddsplpbbgqvxvb4mws0rs0v-clan-cli-source.drv
  /nix/store/slissk9kv9vn7zk56zwwg6knh4q0fdg4-clan-cli.drv
  /nix/store/wxbpynh7na927kbp1rk3a3qawja533r6-closure-info.drv
  /nix/store/p7d2n2yb2aqyazgqhfvj9g62klakbzk1-check-vars.drv
error: path '/nix/store/7ffglhp9fvmg44jgpps58zcy6cgyj0xi-check-vars' is not valid
error: Cannot build '/nix/store/p7d2n2yb2aqyazgqhfvj9g62klakbzk1-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/7ffglhp9fvmg44jgpps58zcy6cgyj0xi-check-vars