these 4 derivations will be built:
  /nix/store/50yvl22xnfrvp2b5zxxqqg6n5wl505ak-clan-cli-source.drv
  /nix/store/cw1a9q9cjf7w4maqmyh63v28zf0wri1v-closure-info.drv
  /nix/store/ddxqnnxnyfbhfg1znh7qx8scdcjsfd3g-clan-cli.drv
  /nix/store/8rs4j6c8kj5g0jbakqc3zrapf81yv1zi-check-vars.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy
error: path '/nix/store/m2z9i67wjqv25r881i528wlgw6acmrxl-check-vars' is not valid
error: Cannot build '/nix/store/8rs4j6c8kj5g0jbakqc3zrapf81yv1zi-check-vars.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/m2z9i67wjqv25r881i528wlgw6acmrxl-check-vars