these 2 derivations will be built:
  /nix/store/z3mpagxc0mzr36zcr1pi1yq0macx8nna-flake-inputs.drv
  /nix/store/nsbm4byr09hddn2951r0mmavw3qfgyh4-check-flake-inputs.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy