these 2 derivations will be built:
  /nix/store/8xmdy48pww2np4z4cmzywbca2f5yldvw-closure-info.drv
  /nix/store/7c9vs3rz6mcifr6fh5rvnbqnyq8ngfam-check-vars.drv
error: path '/nix/store/7nnlsm5bzbp9x6n8lwpms4c7i8y0hn5g-check-vars' is not valid
error: Cannot build '/nix/store/7c9vs3rz6mcifr6fh5rvnbqnyq8ngfam-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/7nnlsm5bzbp9x6n8lwpms4c7i8y0hn5g-check-vars