these 2 derivations will be built:
  /nix/store/s6xf29r4jb45y3q1w8f9ksp0vq5cddsp-closure-info.drv
  /nix/store/x952il763wiq5qy4ygk7zfdsv6nlmqag-check-vars.drv
error: path '/nix/store/fmfbzjvfjbc2qmklhkyn2z89s6f8aswy-check-vars' is not valid
error: Cannot build '/nix/store/x952il763wiq5qy4ygk7zfdsv6nlmqag-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/fmfbzjvfjbc2qmklhkyn2z89s6f8aswy-check-vars