these 5 derivations will be built:
  /nix/store/vavi08wrfjc16nwzp987bgbqgyi2dx05-clan-runtime.drv
  /nix/store/2k6s4bpwj7fpm0pzzpaz8i46lil6nrla-clan-cli-source.drv
  /nix/store/8rw2c014k7dc2ndqihsgmyia409pq66k-closure-info.drv
  /nix/store/gjf07qfm5dwv2ir7pscngx8wfpd9gdf4-clan-cli.drv
  /nix/store/ghvr49g5hcfjaq6y8h2xi7a2xvjv11f7-check-vars.drv
error: path '/nix/store/2zhi2c19g0jic331jzfbvn7fl02x00p9-check-vars' is not valid
error: Cannot build '/nix/store/ghvr49g5hcfjaq6y8h2xi7a2xvjv11f7-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/2zhi2c19g0jic331jzfbvn7fl02x00p9-check-vars