these 4 derivations will be built:
  /nix/store/iba407a4av2wx7knnfwv2dwr1jf22jha-clan-cli-source.drv
  /nix/store/n3pwm9r1hr9ng93p32ivd5xh3n5lmlj9-clan-cli.drv
  /nix/store/vydyz29ky1qfz1x5x7nh3vc11iifi06g-closure-info.drv
  /nix/store/xswkfklpv1szf1588myq8i5pmsi8vayf-check-vars.drv
error: path '/nix/store/j05is7si9ra7p9lv5wbryhawq4iylhsb-check-vars' is not valid
error: Cannot build '/nix/store/xswkfklpv1szf1588myq8i5pmsi8vayf-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/j05is7si9ra7p9lv5wbryhawq4iylhsb-check-vars