these 2 derivations will be built:
  /nix/store/l8jyr2i1k5bzjzlcdv67x92sd8gchjis-generate-dependency-diagram.drv
  /nix/store/44zcbkaj79k2cybrjy9xzfp709lnyrdm-check-dependency-diagram.drv
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy