these 4 derivations will be built:
  /nix/store/1kasijn60qa0vqc0lxjfgkbvdpvd9xcr-closure-info.drv
  /nix/store/l3kvnm8mhdl3sw6mbim2y0zxd9y6ffzg-clan-cli-source.drv
  /nix/store/sszdimqifm75aix66kcgkg4d48jbqnpi-clan-cli.drv
  /nix/store/vgamhi37vv49lhc0zp4rn0kgsqqnslvn-check-vars.drv
error: path '/nix/store/5gii1pv66r916235fjn1qwjgbcvd27a2-check-vars' is not valid
error: Cannot build '/nix/store/vgamhi37vv49lhc0zp4rn0kgsqqnslvn-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/5gii1pv66r916235fjn1qwjgbcvd27a2-check-vars