I'm courious how this should work. IIRC removing the plugin essentially means removing the export command from the default installation. This is something we really like to do in the future, but for now this would be a breaking change.

Sure, people who want poetry export will need to install the plugin themselves.

If we want poetry export to be a default command: then move it back in-tree in this repository. But if we want it to be a plugin, then let's treat it as a plugin.

I can see we're going to need consensus here... somehow.

While we're thinking about disentangling these two projects, here are some more thoughts.

I'd be inclined to transfer the bits of export-specific code that linger in this repository over to the plugin entirely. That is: get_project_dependency_packages(), and its children in the call graph.

That would allow deleting the horrid cross-repository github workflow, making it much easier to make fixes to the export function.

It would also make it easier to add enhancements if the export plugin was more involved in walking the dependency tree eg python-poetry/poetry-plugin-export#91 would like access to information that is known inside that code.

To be clear, I don't intend to do any of that any time soon. But this seems as good a place as any to dump some notes.

Is this PR still a possibility? I'm also having issues building poetry now, but with bazel instead of conda.

Is this PR still a possibility?

Short-term: no. Mid-term: maybe. See #8562

Would it be possible to remove the circular dependency but still install the plugin by default? Being able to have Poetry interact with pip through requirements.txt files is still a really nice default feature to have. For example, tools like nox-poetry depend on this:

• https://github.com/cjolowicz/nox-poetry/blob/0612f2fabad3f3a3e661db5e0f254000341e92f1/src/nox_poetry/poetry.py#L135

Not having to install a plugin for this kind of functionality (especially since it's a different workflow based on if you are using pipx or not, warnings about Windows, etc) would be convenient if at all possible.

Idea: Could the export plugin be an extras? So that a user could install it with pipx in a single convenient command with:

pipx install poetry[export-plugin]

I don't think an extra changes much. We still have a circular dependency (only if the extra is used but nevertheless...). I think a general solution for plugins that are required for a specific project as demanded in #5729 might make more sense. It looks like there is already a POC for project plugins: #5740. Maybe, someone picks this up.

Okay, wow yes #5729 / #5740 would be a really great way to solve this issue! The specific challenge that this PR will introduce for us is a bootstrapping problem. Whenever we share a Poetry project with another developer, they already need to:

1. Install pipx
2. Install Poetry
3. Use the project (Poetry/nox etc.)

Now we'd need to inform them that they need to:

1. Install pipx
2. Install Poetry
3. Install the export plugin
4. Use the project (Poetry/nox etc)

We've found that these bootstrapping type steps are fraught with developers making small mistakes and thus, we actually avoid Poetry plugins more than we otherwise would because getting them installed everywhere correctly is tricky to document and get everyone to manually install.

Hope this feedback is useful!

I'm still in favor of eliminating this circular dependency but I just wanted to point to my comment here:
#6441 (comment)
It seems we can handle circular dependencies in conda packages, it's just a little awkward.

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After having merged #9547, I think there is consensus that we can move on here.

I've rebased, am happy to accept pull requests on my fork with tweaks / allow maintainers to push / have someone else follow up separately with further change

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