these 5 derivations will be built:
  /nix/store/6x9fpx0v9qjjr7fxhda1kjpc9vprs1sz-clan-runtime.drv
  /nix/store/q4i442mqja9nwiaa50shvsa5p2b5q4n5-clan-cli-source.drv
  /nix/store/5xi99ifff1a5lk9i1nynfvypsc4yr45y-clan-cli.drv
  /nix/store/ywl58lns59yvrqn1xkmf29ymqd8sfv0g-closure-info.drv
  /nix/store/mzh0pmywv3k0i8pijy8whwvzcc5dbrar-check-vars.drv
error: path '/nix/store/z074fga9v0ap2hy4qyh4ymkprl2y6ss2-check-vars' is not valid
error: Cannot build '/nix/store/mzh0pmywv3k0i8pijy8whwvzcc5dbrar-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/z074fga9v0ap2hy4qyh4ymkprl2y6ss2-check-vars