https://bugs.kde.org/show_bug.cgi?id=513292
Bug ID: 513292
Summary: Build is not reproducible
Classification: Frameworks and Libraries
Product: frameworks-kirigami
Version First 6.20.0
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: Not decided
SUMMARY
Ideally, building the project twice on equivalent systems should result in the
same bit-by-bit result. This helps verify there's been no compromise of build
systems, especially when the project is part of a larger aggregate. You can
read more about this at https://reproducible-builds.org/.
kirigami seems quite close to being reproducible, but to suffer from an issue
similar to https://qt-project.atlassian.net/browse/QTBUG-137440: a missing
explicit library dependency in the CMakeLists.txt of a project using qml leads
to a nondeterminism in what code is generated for it.
This issue was identified while reproducing the NixOS graphical installation
issue, and is tracked there as https://github.com/NixOS/nixpkgs/issues/450720
STEPS TO REPRODUCE
Build kirigami in an 'essentially equivalent' environment, but for example
varying the parallelism between '2' and '16'.
OBSERVED RESULT
Different generated code / output.
Specifically, the generated
src/dialogs/.rcc/qmlcache/KirigamiDialogs_Dialog_qml.cpp (generated from
./src/dialogs/Dialog.qml) is different: for 6.20.0, the methods not
consistently generated are "color at line 328, column 9", "size at line 331,
column 13", and "width at line 337, column 13"
I'm not familiar enough with QML to go from here to actually specifying that
dependency, though - I'd be happy to test further if you can point me in the
right direction!
EXPECTED RESULT
The same generated code / output
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