Normal The package dev-python/gpep517-6 request dev-python/installer as dependency, which is not in the portage tree.
By trying to emerge dev-python/gpep517 package i get the following message:
These are the packages that would be merged, in order: Calculating dependencies... done! emerge: there are no ebuilds to satisfy "dev-python/installer[python_targets_python3_7(-)?,python_targets_python3_9(-)?,python_targets_python3_8(-)?,python_targets_python3_10(-)?,-python_single_target_python3_7(-),-python_single_target_python3_9(-),-python_single_target_python3_8(-),-python_single_target_python3_10(-)]". (dependency required by "dev-python/gpep517-6::python-modules-kit" [ebuild]) (dependency required by "gpep517" [argument])
