Bug 764443

Summary:	sys-apps/portage: repeat postinst messages at the very end of emerge output (after preserved-libs)
Product:	Portage Development	Reporter:	Michał Górny <mgorny>
Component:	Core - Interface (emerge)	Assignee:	Portage team <dev-portage>
Status:	CONFIRMED ---
Severity:	normal	CC:	esigra, sam
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
See Also:	https://bugs.gentoo.org/show_bug.cgi?id=764122 https://bugs.gentoo.org/show_bug.cgi?id=681592
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	240323

Description Michał Górny archtester

2021-01-08 12:38:30 UTC

Right now, the postinst messages are repeated by Portage near end of build process.  However, they are followed by some more output, in particular preserved library listing that can get very long.

Example (of not so-long listing):
---
>>> dev-util/catfish-4.16.0 merged.
>>> Regenerating /etc/ld.so.cache...

 * Messages for package dev-python/python-distutils-extra-2.45:
 * Log file: /var/log/portage/dev-python:python-distutils-extra-2.45:20210108-123425.log

 * DISTUTILS_USE_SETUPTOOLS value is probably incorrect
 *   have:     DISTUTILS_USE_SETUPTOOLS=rdepend
 *   expected: DISTUTILS_USE_SETUPTOOLS=bdepend
>>> Auto-cleaning packages...

>>> No outdated packages were found on your system.

 * GNU info directory index is up-to-date.

!!! existing preserved libs:
>>> package: dev-tcltk/blt-2.5.3-r1
 *  - /usr/lib64/libBLT24.so
 *      used by /usr/lib64/python3.6/lib-dynload/_tkinter.cpython-36m-x86_64-linux-gnu.so (dev-lang/python-3.6.12-r1)
>>> package: media-libs/qhull-2020.2-r2
 *  - /usr/lib64/libqhull.so.7
 *  - /usr/lib64/libqhull.so.7.2.0
 *      used by /usr/lib/python3.7/site-packages/matplotlib/_qhull.cpython-37m-x86_64-linux-gnu.so (dev-python/matplotlib-3.3.3-r1)
 *      used by /usr/lib/python3.8/site-packages/matplotlib/_qhull.cpython-38-x86_64-linux-gnu.so (dev-python/matplotlib-3.3.3-r1)
 *      used by /usr/lib/python3.9/site-packages/matplotlib/_qhull.cpython-39-x86_64-linux-gnu.so (dev-python/matplotlib-3.3.3-r1)
Use emerge @preserved-rebuild to rebuild packages using these libraries
---


Please move them to the very end, so that preserved-libs wouldn't cause them to go off-screen.