This is e.g. required for mpv (depends on ffmpeg_4) to play AV1 videos.
Fixes#54990.
But since dav1d is only a AV1 decoder this doesn't support AV1 encoding
as well (that would require an additional dependency on libaom).
The dependency on dav1d can be disabled by overriding it to null.
Currently the following warnings and errors are logged on GNOME startup:
Aug 22 19:34:16 kaiser dbus-daemon[1229]: [session uid=132 pid=1229] Activating via systemd: service name='org.a11y.Bus' unit='at-spi-dbus-bus.service' requested by ':1.8' (uid=132 pid=1246 comm="/nix/store/5anz
kdq6src76c4lm4m98w2a8f3j2cc4-gnome-" label="kernel")
Aug 22 19:34:16 kaiser systemd[1223]: Starting Accessibility services bus...
Aug 22 19:34:16 kaiser at-spi-bus-laun[1341]: Using the 'memory' GSettings backend. Your settings will not be saved or shared with other applications.
Aug 22 19:34:16 kaiser dbus-daemon[1229]: [session uid=132 pid=1229] Successfully activated service 'org.a11y.Bus'
Aug 22 19:34:16 kaiser systemd[1223]: Started Accessibility services bus.
Aug 22 19:34:16 kaiser at-spi-bus-launcher[1341]: dbus-daemon[1345]: Activating service name='org.a11y.atspi.Registry' requested by ':1.0' (uid=132 pid=1246 comm="/nix/store/5anzkdq6src76c4lm4m98w2a8f3j2cc4-gnom
e-" label="kernel")
Aug 22 19:34:16 kaiser at-spi-bus-launcher[1341]: dbus-daemon[1345]: Successfully activated service 'org.a11y.atspi.Registry'
Aug 22 19:34:16 kaiser at-spi-bus-launcher[1341]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry
[…]
Aug 22 19:34:26 kaiser dbus-daemon[1775]: [session uid=1000 pid=1775] Activating via systemd: service name='org.a11y.Bus' unit='at-spi-dbus-bus.service' requested by ':1.10' (uid=1000 pid=1852 comm="/nix/store/0k7r7imgs4zw3c9csldq7clmcyn4cy6k-gnome-" label="kernel")
Aug 22 19:34:26 kaiser systemd[1769]: Starting Accessibility services bus...
Aug 22 19:34:26 kaiser at-spi-bus-laun[1858]: g_settings_schema_source_lookup: assertion 'source != NULL' failed
Aug 22 19:34:26 kaiser at-spi-bus-laun[1858]: g_settings_schema_source_lookup: assertion 'source != NULL' failed
Aug 22 19:34:26 kaiser dbus-daemon[1775]: [session uid=1000 pid=1775] Successfully activated service 'org.a11y.Bus'
Aug 22 19:34:26 kaiser systemd[1769]: Started Accessibility services bus.
Aug 22 19:34:26 kaiser at-spi-bus-launcher[1858]: dbus-daemon[1862]: Activating service name='org.a11y.atspi.Registry' requested by ':1.0' (uid=1000 pid=1852 comm="/nix/store/0k7r7imgs4zw3c9csldq7clmcyn4cy6k-gnome-" label="kernel")
Aug 22 19:34:26 kaiser at-spi-bus-launcher[1858]: dbus-daemon[1862]: Successfully activated service 'org.a11y.atspi.Registry'
Aug 22 19:34:26 kaiser at-spi-bus-launcher[1858]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry
This patch starts wrapping the binary, fixing one of the stragglers from https://github.com/NixOS/nixpkgs/issues/14120.
Unfortunately, we could not use wrapGAppsHook due to dependency cycle.
The SDL2_PATH environment variable is space-separated. However, CMake
lists are semicolon separated, and doing set(list "a" ${var}) will end
up with list containing "a;b c d". This causes downstream users to fail
parsing the include dirs list.
Normalize the include dirs list to a normal CMake semicolon-separated
list using separate_arguments.
Since we added wrapQTAppHooks to qt5.mkDerivation, it pollutes the closure
of everything it touches even when package is not building with Qt support.
We had to revert to the standard deriver to avoid this.
