TodoWP Package doctrine/cache is abandoned, you should avoid using it. No replacement was suggested. Package swiftmailer/swiftmailer is abandoned, you should avoid using it. Use symfony/mailer instead. Generating autoload files 58 packages you are using are looking for funding. Use the composer fund command to find out more! No security vulnerability advisories found.
IanM TodoWP This is expected on Flarum 1.x - many of it's internal dependencies are now deprecated or abandoned. For the time being, you can safely continue, and look out for the new Flarum 2.0 next year, which uses much newer deps 🙂
TodoWP IanM So what can I do? I can't install anything; I'm getting this message now: Installation failed, reverting ./composer.json and ./composer.lock to their original content.
IanM TodoWP there will be another reason listed in the composer output. Can you share the command you are using and the full output?