I would at least like to see some mechanism to exclude a Formula from automatic gc of old versions besides brew pin. Libraries don't take up significant space, and they cause a world of hurt to delete out from under compiled binaries, so there is not a good argument for automatically deleting them.
Frustrating that my PR to create readline@7 was rejected. https://github.com/Homebrew/homebrew-core/pull/36782
I would at least like to see some mechanism to exclude a Formula from automatic gc of old versions besides brew pin. Libraries don't take up significant space, and they cause a world of hurt to delete out from under compiled binaries, so there is not a good argument for automatically deleting them.