Refactor: move get_locked() from VersionSolver to Provider#6204
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neersighted merged 4 commits intopython-poetry:masterfrom Aug 31, 2022
Merged
Refactor: move get_locked() from VersionSolver to Provider#6204neersighted merged 4 commits intopython-poetry:masterfrom
neersighted merged 4 commits intopython-poetry:masterfrom
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…sed in tests and can cause inconsistencies between a solver and its provider)
…lways be set via contextmanager "use_environment" to avoid inconsistent python_constraint)
…ionSolver to Provider
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This refactoring is motivated by #6131. While the change in #6131 seems to be functionally correct, I don't like it from an architectural point of view (passing a
get_lockedfromVersionSolvertoProvider). However, for the fixProviderhas to know about locked packages. After careful consideration, I came to the conclusion that it makes more sense, ifProviderprovides theget_lockedmethod sinceProvideralready has different methods that take a dependency as input and give one ore more packages. Further, it already has knowledge about installed packages so it makes sense to extend that to locked packages.To put it in a nutshell, the main objective of this PR is to move
get_locked()fromVersionSolvertoProvider. On the way, I noticed some other shortcomings I changed in separate commits.In case anyone is wondering why the
installedandlockedfixtures intest_solvercan't be used anymore: SinceProvidertransforms the list of locked packages into a dict, changes to the list of locked packages after creating aProviderinstance have no effect. Since changing locked packages after creating the solver/provider is no real use case (was only done in tests), I decided to adapt the tests in favor of a more clear interface that fits better to the real world use case.