these 2 derivations will be built:
  /nix/store/917rxp5fxdqiajgk9wpni511jzhdlpkz-flake-inputs.drv
  /nix/store/yyind76dr2rypg3m81439wzg8saqa60c-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy