How to roll back changes in composer dependencies?

Question

Composer

Hi friends!
I transferred the server, performed composer install on the new server, and more recent versions of plugins were delayed, which do not work as they should. How do I get old versions of plugins back.
I have an unmodified composer.lock from an old server.
Is it even possible?

Answer 1

Composer install installs specific versions from composer.lock (if present). You apparently didn’t have it, or you did a composer update.
If there is an old composer.lock - just put it in the project, remove the unnecessary and do a composer install.
If there is no old composer.lock - edit composer.json, specify the necessary version constraints in it.
PS: To avoid such situations, composer.lock must be committed to the git repository.