these 4 derivations will be built:
  /nix/store/bdac7hrb4bm53hbnkg7v0wxzi2darnyz-clan-cli-source.drv
  /nix/store/bnxyhj166k13flcm5ifnx90l6hw6pjfa-closure-info.drv
  /nix/store/fsnabgk17hjsf8x83fr6wy333yiknqgp-clan-cli.drv
  /nix/store/vsyk3n0iya5jqqvjzznxm32ymnf87g2d-check-vars.drv
error: path '/nix/store/9knjpwkysd3m1nlh6nj8qdd6snxa5i9n-check-vars' is not valid
error: Cannot build '/nix/store/vsyk3n0iya5jqqvjzznxm32ymnf87g2d-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/9knjpwkysd3m1nlh6nj8qdd6snxa5i9n-check-vars