* guix/import/pypi.scm (guess-requirements): Support extracting
dependencies from pyproject.toml.
* tests/pypi.scm: ("pypi->guix-package, no requires.txt, but wheel."):
Renamed from "pypi->guix-package, wheels", remove requires.txt file,
because the current implementation cannot detect invalid files.
("pypi->guix-package, no usable requirement file, no wheel."): Renamed
from "pypi->guix-package, no usable requirement file.".
(test-pyproject.toml): New variable.
("pypi->guix-package, no wheel, no requires.txt, but pyproject.toml"):
New test.
("pypi->guix-package, no wheel, but requires.txt and pyproject.toml"):
Ditto.
Change-Id: Ib525750eb6ff4139a8209420042b28ae3c850764
Reviewed-by: Ludovic Courtès <ludo@gnu.org>
Signed-off-by: Sharlatan Hellseher <sharlatanus@gmail.com>