these 2 derivations will be built:
  /nix/store/bavcmv14nx8ns1jbp531jndy5gdqrd70-closure-info.drv
  /nix/store/wza7ih8yg4gh6ah6whaqb3rvzw5z9flj-check-vars.drv
error: path '/nix/store/pqv6fwc5fp3gi575y92qxfmyy92ri1n6-check-vars' is not valid
error: Cannot build '/nix/store/wza7ih8yg4gh6ah6whaqb3rvzw5z9flj-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/pqv6fwc5fp3gi575y92qxfmyy92ri1n6-check-vars