[pull] master from NixOS:master #175
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Fallout from #234710.
This was Tech Preview in Qt 6.4, released in 6.5
This is now the default recommendation upstream for linux platforms > https://doc.qt.io/qt-6.6/qtmultimedia-index.html#ffmpeg-as-the-default-backend > In this release the FFmpeg framework is set as the default backend on > Windows, macOS, Android, and Linux except Yocto distribution. > The version shipped with Qt binary packages is FFmpeg 6.0 > and is tested by the maintainers. libXrandr is required to compile support QT_WINDOW_CAPTURE_BACKEND=x11
QtMultimedia 6.6.0 would select dynamic VAAPI on linux, then warns during build (even though it chose this on purpose): > QT_FEATURE_vaapi is found but ffmpeg doesn't include vaapi, > however dynamic symbols resolve is possible The nuisance warning was fixed for 6.7 and backported to 6.6.1: https://codereview.qt-project.org/c/qt/qtmultimedia/+/517333 However, tracing it helped me figure out why vaapi actually wasn't working: nix doesn't end up with an rpath such that dlopen("va") can actually find libva.so in the nix store, thus failing at runtime: > qt.multimedia.plugin: loading backend "ffmpeg" > qt.core.library: "/nix/store/i9fkjks6dfjj1p9qvj5633sxbrf5rbd8-qtmultimedia-6.6.1/lib/qt-6/plugins/multimedia/libffmpegmediaplugin.so" loaded library > qt.multimedia.ffmpeg.libsymbolsresolver: Start VAAPI symbols resolving: 39 symbols > qt.core.library: "va" cannot load: Cannot load library va: (va: cannot open shared object file: No such file or directory) > qt.multimedia.ffmpeg.libsymbolsresolver: Couldn't load VAAPI library
…e-4.3.0 python311Packages.robotframework-pythonlibcore: 4.2.0 -> 4.3.0
openai: cleanup
qt6.qtmultimedia: Enable ffmpeg/VAAPI backend
php: use a versioned url for install-pear-nozlib.phar
bup: Fix build on Darwin with LLVM 16
…s.millheater python310Packages.millheater: 0.11.6 -> 0.11.7
…s.mkdocstrings python310Packages.mkdocstrings: 0.23.0 -> 0.24.0
python311Packages.example-robot-data: 4.0.8 -> 4.0.9
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