these 4 derivations will be built:
  /nix/store/0acjdgjypqd0l1ggs9jphac8cfsn7bcs-closure-info.drv
  /nix/store/n6gr982jqhwypww2746j0zj0rak6ssnp-clan-cli-source.drv
  /nix/store/hbcfzz1ivr6fm99xk5kmacvdrj89amcs-clan-cli.drv
  /nix/store/q0y8vycpz2mxhc85jp59a07n0sm475sd-check-vars.drv
error: path '/nix/store/4b8ylx0hvvdwvjag3b139m08x5691zrd-check-vars' is not valid
error: Cannot build '/nix/store/q0y8vycpz2mxhc85jp59a07n0sm475sd-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/4b8ylx0hvvdwvjag3b139m08x5691zrd-check-vars