Remove unconstrained version error from requirements #3443
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charliermarsh
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The Rust ecosystem pushes constraints, but they are an anti-pattern in the Python ecosystem: https://iscinumpy.dev/post/bound-version-constraints |
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This should have only been applied to files with tool.uv.sources to ensure people put at least a lower bound |
konstin
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When using `tool.uv.sources`, we enforce that requirements have a bound, i.e. at least a lower version constraint. When using a library, the symbols you import were introduced in different versions, creating an implicit lower bound. This forces to make that bound explicit. This is crucial to prevent backtracking resolvers from selecting an ancient versions that is not compatible (or worse, doesn't build), and a performance optimization on top. This feature is gated to `tool.uv.sources` (as it should have been for #3263/#3443) to not unnecessarily break legacy workflows. It is also helpful specifically when using a `tool.uv.sources` section that contains constraints that are not published to pypi, e.g. for workspace dependencies. We can adjust those later to e.g. not constrain workspace dependencies with `publish = false`, but i think it's the right setting to start with.
konstin
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May 8, 2024
When using `tool.uv.sources`, we enforce that requirements have a bound, i.e. at least a lower version constraint. When using a library, the symbols you import were introduced in different versions, creating an implicit lower bound. This forces to make that bound explicit. This is crucial to prevent backtracking resolvers from selecting an ancient versions that is not compatible (or worse, doesn't build), and a performance optimization on top. This feature is gated to `tool.uv.sources` (as it should have been for #3263/#3443) to not unnecessarily break legacy workflows. It is also helpful specifically when using a `tool.uv.sources` section that contains constraints that are not published to pypi, e.g. for workspace dependencies. We can adjust those later to e.g. not constrain workspace dependencies with `publish = false`, but i think it's the right setting to start with.
konstin
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May 8, 2024
When using `tool.uv.sources`, we warn that requirements have a bound, i.e. at least a lower version constraint. When using a library, the symbols you import were introduced in different versions, creating an implicit lower bound. This forces to make that bound explicit. This is crucial to prevent backtracking resolvers from selecting an ancient versions that is not compatible (or worse, doesn't build), and a performance optimization on top. This feature is gated to `tool.uv.sources` (as it should have been for #3263/#3443) to not unnecessarily break legacy workflows. It is also helpful specifically when using a `tool.uv.sources` section that contains constraints that are not published to pypi, e.g. for workspace dependencies. We can adjust those later to e.g. not constrain workspace dependencies with `publish = false`, but i think it's the right setting to start with.
charliermarsh
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May 8, 2024
When using `tool.uv.sources`, we warn that requirements have a bound, i.e. at least a lower version constraint. When using a library, the symbols you import were introduced in different versions, creating an implicit lower bound. This warning makes this explicit. This is crucial to prevent backtracking resolvers from selecting an ancient versions that is not compatible (or worse, doesn't build), and a performance optimization on top. This feature is gated to `tool.uv.sources` (as it should have been to begin with for #3263/#3443) to not unnecessarily break legacy workflows. It is also helpful specifically when using a `tool.uv.sources` section that contains constraints that are not published to pypi, e.g. for workspace dependencies. We can adjust those later to e.g. not constrain workspace dependencies with `publish = false`, but i think it's the right setting to start with.
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Summary
It's not clear to me that this should exist at all, but it's causing errors in projects that don't use
tool.uv.sources, so we should definitely remove it for now.