https://bugs.kde.org/show_bug.cgi?id=505090
Bug ID: 505090
Summary: tmpfiles wants to create /usr/var rather than /var
Classification: Plasma
Product: plasma-login
Version First unspecified
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: sit...@kde.org
CC: k...@davidedmundson.co.uk, olib...@outlook.com
Target Milestone: ---
[This may be a bug in extra-cmake-modules]
SUMMARY
The statedir location seems to be incorrectly prefixed with a /usr when it
should be /. Causing tmpfiles on immutable /usr to trip over
/usr/var/lib/plasmalogin being readonly.
STEPS TO REPRODUCE
1. cmake install
2. observe incorrect path in artifacts (e.g. the tmpfiles.d file)
3. mount a readonly /usr that does not contain a /usr/var/ (specific step
depends on your system alas)
4. systemd-tmpfiles --create
OBSERVED RESULT
tmpfiles fails over readonly filesystem
EXPECTED RESULT
tmpfiles should exit successfully
SOFTWARE/OS VERSIONS
Operating System: KDE Linux 2025-05-05
KDE Plasma Version: 6.3.80
KDE Frameworks Version: 6.15.0
Qt Version: 6.9.0
Kernel Version: 6.14.4-arch1-2 (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 5950X 16-Core Processor
Memory: 64 GiB of RAM (62.7 GiB usable)
Graphics Processor: AMD Radeon RX 7800 XT
ADDITIONAL INFORMATION
I haven't really looked at it but chances are kdeinstalldirs in ECM doesn't
special-handle /var correctly. To align with the cmake default behaviors it'd
have to "For <dir> other than the SYSCONFDIR, LOCALSTATEDIR and RUNSTATEDIR,
the value of CMAKE_INSTALL_<dir> is prefixed with usr/ if it is not
user-specified as an absolute path.". Possibly it doesn't implement the latter
two exclusions.
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