these 5 derivations will be built:
  /nix/store/0k2pmqwr5rfckmx1kl7wzn5kdkr34zjr-clan-runtime.drv
  /nix/store/p9vlxb49ri3vmrfw6aa3sid6jsp5khnj-clan-cli-source.drv
  /nix/store/hwr7ynd6ahrfcp2q6gkf8xqlblfl7nvn-clan-cli.drv
  /nix/store/mnpq9hmd967cgqvp67wy16n1jbc2dmlr-closure-info.drv
  /nix/store/p1y13w2xp8v5yfqph8p8apjhpqyk8zvk-check-vars.drv
error: path '/nix/store/5rx5zdnk58dwgh7p0apdpjcs4v6qqxfv-check-vars' is not valid
error: Cannot build '/nix/store/p1y13w2xp8v5yfqph8p8apjhpqyk8zvk-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/5rx5zdnk58dwgh7p0apdpjcs4v6qqxfv-check-vars