these 4 derivations will be built:
  /nix/store/cwy5c52mcn4671xaw49lfibasljjd4mn-clan-cli-source.drv
  /nix/store/071mng6w2fb990z3zvk8hs4aqm5hxyzk-clan-cli.drv
  /nix/store/hdlc2nl358zwllsdy0hj78bnaa4n6vi8-closure-info.drv
  /nix/store/jb9vzjz0caih4h03v6411cikzc9gqds0-check-vars.drv
error: path '/nix/store/y9gzzn0sk9ybscgjpw7xlidsd9fzqrrz-check-vars' is not valid
error: Cannot build '/nix/store/jb9vzjz0caih4h03v6411cikzc9gqds0-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/y9gzzn0sk9ybscgjpw7xlidsd9fzqrrz-check-vars