these 5 derivations will be built:
  /nix/store/2v3cqk0s44wpyx04nv9kc6kvf7wmjmgp-clan-runtime.drv
  /nix/store/qpfxkkx5j32sff6as18flf4p1fmlrk63-closure-info.drv
  /nix/store/y8f73yyb9banrambl2z8lpn4r27cpai2-clan-cli-source.drv
  /nix/store/xdzjgqxfci9hffkslgrm7q9vi9fi671q-clan-cli.drv
  /nix/store/y5mc9m5ga8v23wj73yzv3zfiw7g2mx23-check-vars.drv
error: path '/nix/store/95nicn1138gk5v4k7i07fi8b9n2c79qn-check-vars' is not valid
error: Cannot build '/nix/store/y5mc9m5ga8v23wj73yzv3zfiw7g2mx23-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/95nicn1138gk5v4k7i07fi8b9n2c79qn-check-vars