these 5 derivations will be built:
  /nix/store/z0y1l9hbialcbksnqjzq8z5qz4npa8vk-clan-runtime.drv
  /nix/store/q9x72d5hlnqj90swfh1ad8mgisipgf1k-clan-cli-source.drv
  /nix/store/45pf4gf1gb3i5ld2a6x1d2x5rp0z8nrl-clan-cli.drv
  /nix/store/iiqjmizcac2c2vdwcnlqzgylbxafbfmc-closure-info.drv
  /nix/store/afylj4qalms6gfwizf04gjn0cisclfmk-check-vars.drv
error: path '/nix/store/l72p5yazgwaw6hpb11hk3wvnv6rs588p-check-vars' is not valid
error: Cannot build '/nix/store/afylj4qalms6gfwizf04gjn0cisclfmk-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/l72p5yazgwaw6hpb11hk3wvnv6rs588p-check-vars