Get session list in code

[lhupfeldt]

How would this feature be useful?

I would like to get the list of sessions from within a session in the noxfile. I use the session list to generate json (with further options) for integration with jenkins pipelines.

Describe the solution you'd like

Expose Manifest.list_all_sessions(self) -> Iterator[tuple[SessionRunner, bool]] as a function in the nox module.

Describe alternatives you've considered

I looked at the code, but it seems that it is not simple to get the list.

Anything else?

No response

[henryiii]

Nox supports json output for the session list for the last couple of releases. You can process with jq or Python. Is that fine? Sounds like exactly what you need.

[lhupfeldt]

This is exactly what i don't want. I don't want to invoke a new nox process from within a nox session. The same data available from the command line as json, should be available as a python dict or as Iterator[tuple[SessionRunner, bool]] or similar with a single function call within an existing nox process.

[Walter-Gates-Bose]

I would find this useful as well. I am trying to write a session that will create lock files with pip-tools and want one lock file per session. It would be useful to not have to call nox from within nox; I either have to install nox within that session or make sure nox can be found outside that session.

@henryiii, The nox --list-sessions --json output is constrained when nox.options.sessions is used to just those sessions in that list, that makes it potentially less useful for automation purposes than I think it was intended. I can get around it because I don't want to create a lock file for the session that creates lockfiles using nox -k "not lock" --list-session --json, but others might not.