these 2 derivations will be built:
  /nix/store/7ppi8zrp1vjirkmg9wi80a8vwg0m9014-closure-info.drv
  /nix/store/h9p5w9bbk49bkk03iap822jqdk48ln2i-check-vars.drv
error: path '/nix/store/0234ciqldp0cxhc1nbll0rbgja0zjxcl-check-vars' is not valid
error: Cannot build '/nix/store/h9p5w9bbk49bkk03iap822jqdk48ln2i-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/0234ciqldp0cxhc1nbll0rbgja0zjxcl-check-vars