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Revision as of 16:37, 9 December 2009
HAL Removal
Summary
HAL is a behemoth, do-it-all, daemon to access hardware. It is now obsoleted by udisks (né DeviceKit-disks) and upower (né DeviceKit-power), as well as libudev for device discovery.
This feature tracks the removal of HAL in the Fedora Desktop spin.
See also:
Note that gnome-vfs2 still relies on HAL, and is dragged in through libgnomeui. So removing the gnome-vfs2, or libgnomeui dependencies from applications also helps towards that goal.
Owner
- Name: Bastien Nocera
- email: bnocera@redhat.com
Current status
- Targeted release: Fedora 42
- Last updated: 2009-12-09
- Percentage of completion: 10%
Detailed Description
| Package name | Status | Bug reports or discussions |
|---|---|---|
| rhythmbox | partially done | bug 604186 |
| gstreamer-plugins-good | done | |
| gnome-power-manager | TODO (removed, but regressed) | XRandR brightness settings do not work on all drivers, and don't work with platform brightness settings |
| cheese | done upstream | |
| evolution | done upstream | |
| gvfs | TODO | bug 586410 |
| gvfs-obexftp | TODO | bug 586411 and bug 511671 |
| gnome-vfs2 | WONTFIX | Applications should be removing their use of gnome-vfs2 and use gvfs instead. Direct gnome-vfs2 rdeps: libgnome libgnomeui xulrunner gnome-pilot im-chooser dasher planner firefox evolution gnome-python2-gnomevfs gnome-python2-gnome gnome-python2-applet gnome-python2-libegg |
| gnome-pilot | TODO | |
| fedora-setup-keyboard/gdm/xorg-x11-server-Xorg | TODO | Used for keymap selection |
| shotwell | TODO | upstream ticket: http://trac.yorba.org/ticket/999 |
| xine-lib | done | dependency on gnome-vfs2 removed |
| libmtp | TODO | Just need to remove the fdi file |
| epiphany | done | Removed obsolete gnome-vfs2-devel dependency |
| pm-utils | TODO | |
| libgpod | TODO | |
| libvirt | TODO |
Benefit to Fedora
Faster boot-up, and removal of obsoleted technology.
Scope
Loads of applications require HAL itself, or libhal. Applications should not rely on HAL, or libhal being available.
How To Test
Need to test:
- rpm -e hal
- Check that applications that access hardware still work as before
User Experience
- Faster boot-up
- Possibly faster applications startup when switching from libhal to libgudev for device enumeration
Dependencies
- See description
Contingency Plan
- Still ship HAL. If the last thing that depends on hal is gnome-power-manager for the backlight support, we can stop running hal as a service at boot and make it dbus-activated instead.
Documentation
N/A
Release Notes
- Fedora now does not ship with the HAL daemon, and libhal by default. If a specific application require libhal to function, please file a bug against it to be ported to the new technology.