these 5 derivations will be built:
  /nix/store/brva63m07xrm746q867bmf8bn17vwk8b-clan-runtime.drv
  /nix/store/bwyhqzbfmsk067dapym8q22kb01mcmay-closure-info.drv
  /nix/store/wr00a1zi137x6b8fghzf1f0rbcf0k28w-clan-cli-source.drv
  /nix/store/swn7zpph16pndaxhvkq38r0w97b7ymwl-clan-cli.drv
  /nix/store/jja6y5d0gy5q9bpqqxy4hkgz1k16kxmk-check-vars.drv
error: path '/nix/store/zdghxcy46dwgy1rj9s98h2naknl2hry4-check-vars' is not valid
error: Cannot build '/nix/store/jja6y5d0gy5q9bpqqxy4hkgz1k16kxmk-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/zdghxcy46dwgy1rj9s98h2naknl2hry4-check-vars