Reuse locked package info for vcs/file/url deps

[abn]

Prior to this change, when add/remove/lock commands were executed,
poetry would re-inspect all locked vcs/file/url dependencies. This is
sub-optimal and not required. This change enables reuse of locked
package info.

Might Resolves: #1614
Closes: #2327 #2325

Pull Request Check List

• Added tests for changed code.
• Updated documentation for changed code.

[wakemaster39]

I gave this a shot to see how it compares to the solution in #2327 as I am all game to kill it. Couple issues I ran into while testing.

poetry update does not update git dependencies, that is a feature that would be beneficial. Work around was deleting the poetry lock file.

After using the work around with the upgraded package, doing a poetry install did not downgrade the installed git dependency to the locked version.

The second issue is pretty critical in my eyes at least as this would then not respect the lock file in a different way than it does currently of always updating to latest.

[sdispater]

I am not sure this is the right place to put this.

We already have a locked system in the VersionSolver class, so we might be able to fix and improve it there.

[abn]

I'll have a whack at that; I was going for the lowest possible place to put this logic otherwise we will end up re-implementing the logic at multiple places. It might also be a good idea to re-work the structure a bit for 2.x.

[wakemaster39]

@abn is there anything I can help with either this PR or #2327 to keep things moving? This is a pretty annoying problem with the git lock not being respected I have to keep working around.

[abn]

Closing in favour of #3875.

[github-actions]

This pull request has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.