these 2 derivations will be built:
  /nix/store/i18yv3y3h04mn24arxdn5nz8rkdqif9z-ctx-2.2.8.drv
  /nix/store/fc9b45bcg4fb6ypvfhzfflypd2pkw0jy-check-ctx.drv
this path will be fetched (0.0 KiB download, 1.2 GiB unpacked):
  /nix/store/i2z9rldlf52j28xjzd0mkqyf1m868kps-ctx-2.2.8-vendor
warning: SQLite database '/nix/var/nix/db/db.sqlite' is busy