these 4 derivations will be built:
  /nix/store/9jd6x6xyrhldwwhshnr1rix7fhmys8z9-closure-info.drv
  /nix/store/dkcvxj50xy22mgr8ndypgywr83k48x1s-clan-cli-source.drv
  /nix/store/xpxv6j08y8b11z9f18iqmcz9rqaj6f8c-clan-cli.drv
  /nix/store/4267c4xv83dvf9wlsd74sqg8br1lzz7g-check-vars.drv
error: path '/nix/store/s46ap6xc59654zgj4qy9vfljmj3g08p0-check-vars' is not valid
error: Cannot build '/nix/store/4267c4xv83dvf9wlsd74sqg8br1lzz7g-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/s46ap6xc59654zgj4qy9vfljmj3g08p0-check-vars