* guix/import/pypi.scm (unzip-command): Use invoke instead of
system*.
(read-wheel-metadata): Adapt accordingly.
(guess-requirements-from-wheel): Improve readability.
* tests/import/pypi.scm (parse-wheel-metadata): Add test (used to
isolate the issue in another test).
(pypi->guix-package, no wheel): Remove python-wheel from the result.
(pypi->guix-package, no usable requirement file, no wheel.): Likewise.
(pypi->guix-package, package name contains \"-\" followed by digits):
Likewise.
(package-latest-release): Likewise.
(pypi->guix-package, no requires.txt, but wheel): Likewise. Also
improve readability.
Change-Id: I49e6ae549437a068acd85fa0f13471bc0af5a399
Signed-off-by: Sharlatan Hellseher <sharlatanus@gmail.com>
483ee41756