1. Wrt PMS and pkgcore, ver_cut and ver_rs use ${PVR} by default, 2. Wrt Portage and eapi7-ver.eclass, they use ${PV} by default. I'm not really sure where this discrepancy came from, and therefore which one was correct. Looking at the bug, ${PVR} is only mentioned for ver_test. Personally I think ${PV} makes more sense for ver_cut and ver_rs since it's frequently used in SRC_URI, etc.
(CC-ing council@ in case someone remembers more about the related discussion)
The question is what was intended, so let's look at the history: 2015-11-22 In bug 482170 comment #15 the following functions are suggested: - replace_version_sep (later renamed -> ver_rs): "VERSION is optional and defaults to ${PV} (I don't think we want ${PVR} here)." - get_version_comp (-> ver_cut): Default not explicitly specified. - version_test (-> ver_test): "V1 is optional and defaults to ${PVR}." 2017-09-08 First version of eapi-ver.eclass committed: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=59a1a0dda7300177a263eb1de347da493f09fdee It defaults to: - ${PV} for ver_cut and ver_rs - ${PVR} for ver_test 2017-09-27 (author date) / 2017-10-04 (posted to gentoo-pms list) First draft for EAPI 7: https://archives.gentoo.org/gentoo-pms/message/c2b9ebed94fa4ad69ba02028744b927a This says ${PVR} for all three functions. Since there was neither a discussion nor a note in the commit message about the change from PV to PVR, I think that the intention always was to have ${PV} for ver_cut and ver_rs, and ${PVR} in PMS seems to be a mistake.
One more fact: EAPI 7 cheatsheet also lists PV for ver_cut and ver_rs. So it's rather definitely a typo.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/proj/pms.git/commit/?id=248f1eaefec15b7c9537ad68a818e34065036b0d commit 248f1eaefec15b7c9537ad68a818e34065036b0d Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2019-07-08 16:44:07 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2019-07-08 19:14:56 +0000 pkg-mgr-commands: Correct ver_cut and ver_rs to use ${PV} by default Correct the description of ver_cut and ver_rs commands to indicate that they process ${PV} when no version argument is specified, rather than wrongly ${PVR}. It seems that the latter was introduced as a typo, as it neither agrees with initial Bugzilla proposal of the function [1], pre-EAPI implementation in eapi7-ver.eclass [2] or EAPI 7 cheatsheet in PMS. Furthermore, it simply makes little sense as the common usage of those functions is to manipulate URLs and filenames, and those do not use ebuild revisions.. It is also how it was implemented in Portage, and initially in PkgCore (afterwards the PkgCore implementation changed to conform to PMS, with expectably breaking results). [1] https://bugs.gentoo.org/482170#c15 [2] https://gitweb.gentoo.org/repo/gentoo.git/commit/eclass/eapi7-ver.eclass?id=59a1a0dda7300177a263eb1de347da493f09fdee Bug: https://bugs.gentoo.org/689494 Signed-off-by: Michał Górny <mgorny@gentoo.org> pkg-mgr-commands.tex | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)