Do we really need the 'celt' package?

Hi, Manjaro team!

I’m on the unstable branch, KDE, ordinary ISO (not minimal version).

I just got the batch of updates:

$ tail /var/log/pacman.log
[2021-07-26T21:56:58+0300] [PACMAN] starting full system upgrade
[2021-07-26T21:58:11+0300] [ALPM] transaction started
[2021-07-26T21:58:12+0300] [ALPM] removed jack (0.125.0-9)
[2021-07-26T21:58:12+0300] [ALPM] installed celt (0.11.3-4)
[2021-07-26T21:58:12+0300] [ALPM] installed jack2 (1.9.19-2)
[2021-07-26T21:58:12+0300] [ALPM] upgraded poppler (21.07.0-2 -> 21.07.0-3)
[2021-07-26T21:58:12+0300] [ALPM] upgraded poppler-glib (21.07.0-2 -> 21.07.0-3)
[2021-07-26T21:58:12+0300] [ALPM] upgraded poppler-qt5 (21.07.0-2 -> 21.07.0-3)
[2021-07-26T21:58:12+0300] [ALPM] transaction completed
[2021-07-26T21:58:12+0300] [ALPM] running '30-systemd-update.hook'...
$ pacman -Si celt
Repository      : extra
Name            : celt
Version         : 0.11.3-4
Description     : Low-latency audio communication codec
Architecture    : x86_64
URL             :
Licenses        : BSD
Groups          : None
Provides        :
Depends On      : libogg
Optional Deps   : None
Conflicts With  : None
Replaces        : None
Download Size   : 73.68 KiB
Installed Size  : 175.89 KiB
Packager        : Jan Alexander Steffens (heftig) <<hidden>>
Build Date      : Thu 07 May 2020 21:01:33 EEST
Validated By    : MD5 Sum  SHA-256 Sum  Signature

on the page by the URL above I got the package repo w/ the latest commit (in the master branch) of:

14 Sep, 2011 1 commit

Direct users at the opus repository. 
Ralph Giles authored 9 years ago

This repository is no longer used for active development.

Do we really need the outdated (cause 10 years w/o fixes and features in lossy audio matters) celt package?

Why we need the package?

$ pacman -Si jack2 
Repository      : extra
Name            : jack2
Version         : 1.9.19-2
Description     : The JACK low-latency audio server
Architecture    : x86_64
URL             :
Licenses        : GPL2  LGPL2.1
Groups          : None
Provides        : jack
Depends On      : db  gcc-libs  glibc  opus
Optional Deps   : a2jmidid: for ALSA MIDI to JACK MIDI bridging
                  libffado: for firewire support using FFADO
                  jack2-dbus: for dbus integration
                  realtime-privileges: for realtime privileges
                  zita-ajbridge: for using multiple ALSA devices
Conflicts With  : jack
Replaces        : jack
Download Size   : 588.02 KiB
Installed Size  : 2678.28 KiB
Packager        : David Runge <<hidden>>
Build Date      : Mon 26 Jul 2021 20:15:38 EEST
Validated By    : MD5 Sum  SHA-256 Sum  Signature

If we need some functionality from the celt, then why not to use more modern opus ( instead?


1 Like

Possibly not.
As it’s an optional dependency, it’s easily removed.
Shouldn’t be a default package included in new installations though, if you ask me.

edit: Perhaps I need to clarify: celt was installed on my system, according to /var/log/pacman.log since this system was set up more than 2 years ago. It was listed as an optional dependency of jack.


I don’t have celt installed, so it probably isn’t.

But celt is a dependency of jack2, which the OP installed according to the output listed.


I am also do not have it in the image I used to install Manjaro. It was stable ISO image or unstable, I do not remember but it was certainly from June, 2021.

Please post the output of pacman -Qi jack2, so we can see what pulled in jack2 and thereby celt.


I know what happened.

Jack2 recently got updated to replace regular jack. So you had jack installed, and it got replaced by a new package, that depends on celt.

Oh, I search the celt, but there is the instead.

I did not install jack2 by myself. I got the update and agreed to upgrade from jack to jack2, so jack2 somehow need obsolete software package.


That’s correct.

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