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8f71d239f8
Revives https://github.com/astral-sh/uv/pull/9130 Previously, we allowed scoping conflicting extras or groups to specific packages, e.g. ,`{ package = "foo", extra = "bar" }` for a conflict in `foo[bar]`. Now, we allow dropping the `extra` or `group` bit and using `{ package = "foo" }` directly which declares a conflict with `foo`'s production dependencies. This means you can declare conflicts between workspace members, e.g.: ``` [tool.uv] conflicts = [[{ package = "foo" }, { package = "bar" }]] ``` would not allow `foo` and `bar` to be installed at the same time. Similarly, a conflict can be declared between a package and a group: ``` [tool.uv] conflicts = [[{ package = "foo" }, { group = "lint" }]] ``` which would mean, e.g., that `--only-group lint` would be required for the invocation. As with our existing support for conflicting extras, there are edge-cases here where the resolver will _not_ fail even if there are conflicts that render a particular install target unusable. There's test coverage for some of these. We'll still error at install-time when the conflicting groups are selected. Due to the likelihood of bugs in this feature, I've marked it as a preview feature. I would not recommend reading the commits as there's some slop from not wanting to rebase Andrew's branch. --------- Co-authored-by: Andrew Gallant <andrew@astral.sh>