these 4 derivations will be built:
  /nix/store/4mslpjvjx4cq8rlibbnykna6h618cxbm-clan-cli-source.drv
  /nix/store/pjbbnlr7v0dzssj6w7s6513qvycsv1n2-clan-cli.drv
  /nix/store/qkfkf19iy4ql9afzhwqsf791f23lpjvw-closure-info.drv
  /nix/store/sn52pd6j8f5m4c6fbfjlvs3c0xffld60-check-vars.drv
error: path '/nix/store/szsidm5z970r2v9c9pxzihgm1bxwz347-check-vars' is not valid
error: Cannot build '/nix/store/sn52pd6j8f5m4c6fbfjlvs3c0xffld60-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/szsidm5z970r2v9c9pxzihgm1bxwz347-check-vars