bug#66174: [BUG] poetry buil

[Danny Milosavljevic]

Hello,

This was broken by commits d477018b57d5b4c13b4dd35aa1c4ee1a00ca76e2
and 21d6985a8b3c6e53aab648275dc27b72c7453437--one of which also has
an incorrect commit message. Obviously those commits can never have
worked since they require poetry in order to build themselves.

I've reverted commit d477018b57d5b4c13b4dd35aa1c4ee1a00ca76e2
and followed up on the other one. It should work now.

This will cause 420 packages to be rebuilt.

Please try

  guix pull

and then try again.

For the record, it might still be nice to add an extra package for the
newer poetry, but not like this. I tried doing that, and then the build of
poetry 1.4.2 broke because our python-virtualenv is too old for it.
So as I said, it could never have worked like this.