Does not install (Composer lies)

The version 1.0.x depends on the Drupal core book module. The core module has been deprecated in Drupal 10.3, please see The Book module is deprecated → . We tagged version 1.1.x to depend on the new contrib book module. You may run into conflicts because we also increased the minimum Drupal core version requirements before tagging a stable release of this module.

Right, but I am constraining to 1.0.x still, not 1.1.x. So it doesn't make sense to me that composer is unhappy, since it should be cool with Drupal 8, 9, or 10, and I am running into this error while my Drupal Core constraint is set to 9.5.11

Not sure why this is happening. The 1.0.x branch does not have a composer dependency on drupal/book. Maybe you can require version 1.0.0-rc1 before the module had a composer.json file.

I thought the same thing and unfortunately I get the same problem. It feels like composer is just looking at the wrong thing for some reason. When I have a minute, I can try this out on a fresh install and see if I get the same thing.

Only other thing I can think of is composer clear-cache.

I tried that too :(

I will mark this issue as fixed after the changes in 💬 Cannot install 1.1 with contrib Book v2 Active . Please use version ^2.0 when using the contrib book module ^2.0.

Automatically closed - issue fixed for 2 weeks with no activity.