Title: Sandbox issue with ccache 4.6
Author: Sam James <sam@gentoo.org>
Posted: 2022-04-12
Revision: 1
News-Item-Format: 2.0
Display-If-Installed: =dev-util/ccache-4.6

Users with ccache enabled for the dev-util/ccache package itself may need
to temporarily disable ccache in order to upgrade the package.

Users on an earlier version of ccache (<4.6) or newer (>=4.6-r1) are
unaffected.

For a small window (between 2022-04-09-4:30AM UTC and 2022-04-09-11:27AM UTC),
the ccache ebuild may have caused a sandbox violation [0] in some circumstances.

To resolve this issue, temporarily re-emerge dev-util/ccache with ccache
disabled:
# FEATURES="-ccache" emerge -v1 ">dev-util/ccache-4.6"

The sandbox violations occur when trying to use ccache for any package;
users who do not have ccache enabled globally (or at least not for ccache
itself) should also proactively upgrade ccache as above.

[0] https://bugs.gentoo.org/837362