these 4 derivations will be built:
  /nix/store/bn9q28lxvclh7f4a2d1f836192qf285y-closure-info.drv
  /nix/store/lp1db96gkskvvr70r12fh0kfbqff4s5v-clan-cli-source.drv
  /nix/store/n61cdqpfzqkc21kgs6gp8p0ddj19v5yy-clan-cli.drv
  /nix/store/75hdxrsgp3g9l97f4iwf37902kk5rd5p-check-vars.drv
error: path '/nix/store/7rzz2v0w04laq27xx19mwhj095j7gwyh-check-vars' is not valid
error: Cannot build '/nix/store/75hdxrsgp3g9l97f4iwf37902kk5rd5p-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/7rzz2v0w04laq27xx19mwhj095j7gwyh-check-vars