use a list for piplite_urls

[bollwyvl]

references

• Document how to pass wheels to --piplite-wheels jupyterlite#1563
  • probably others, but needed to realize it was a traitlets.config issue

changes

• use List instead of TypedTuple for piplite_urls
• test 0, 1, and 2 entries
• handle duplicate wheels, e.g. --piplite-urls . --piplite-urls ./some-package....whl
  • emits a log.warning, but doesn't fail

user-facing changes

• site builders should be able to pass 0, 1, or n wheels
  • if multiple wheels with exactly the same name are discovered, only one will be indexed (not sure which, but better than failing)
• site users should see no change

backwards-incompatible changes

• i guess piplite_urls is a list now, not a tuple. but the tuple typing was wrong anyway, so likely nobody will notice

future work

• we really need upstream to have better types.
  • doit makes this somewhat tricky, as there is no community-maintained types-doit, and we really only care about a very small proportion of them
  • jupyterlite_core is probably easier, but there's still rather a lot going on

[github-actions]

👈 Try it on ReadTheDocs

[jtpio]

Thanks for the fix!

I changed the base branch back to main based on #160 (comment).

Will follow-up with the backport + releases.

[jtpio]

@meeseeksdev please backport to 0.5.x

[Carreau]

thanks!