[arch-general] Zstandard for local user build packages - Was: [arch-announce] Now using Zstandard instead of xz for package compression

[Ralf Mardorf]

On Sat, 04 Jan 2020 20:35:55 -0000, Arch Linux: Recent news updates:
Robin Broda wrote:
>our package compression scheme has changed from xz (.pkg.tar.xz) to
>[zstd(.pkg.tar.zst)]  

Hi,

what needs to be done to build local .pkg.tar.zst packages?

If I build local packages, they are still .pkg.tar.xz.
Regarding "meld /etc/makepkg.conf{,.pacnew}" the makepkg.conf on my
machine isn't obsolete.

Do we manually change the "EXTENSION DEFAULTS" and/or something else?

Kernels build in December 2019 are .pkg.tar.xz, while pacman >= 5.2 and
libarchive >= 3.3.3-1 were already installed.

[rocketmouse at archlinux ~]$ grep -e pacman\ \( -e libarchive /var/log/pacman.log | grep upgrade | tail -5
[2019-06-18 11:07] [ALPM] upgraded libarchive (3.3.3-1 -> 3.4.0-2)
[2019-10-26 02:13] [ALPM] upgraded pacman (5.1.3-1 -> 5.2.0-2)
[2019-11-02T10:48:37+0100] [ALPM] upgraded pacman (5.2.0-2 -> 5.2.1-1)
[2019-11-19T07:43:09+0100] [ALPM] upgraded libarchive (3.4.0-2 -> 3.4.0-3)
[2020-01-02T09:56:48+0100] [ALPM] upgraded libarchive (3.4.0-3 -> 3.4.1-1)
[rocketmouse at archlinux ~]$ ls -l /var/cache/aur/current/linux-rt-* | grep -v -e headers -e docs
-rw-r--r-- 1 rocketmouse rocketmouse 68555824 Dec 25 22:33 /var/cache/aur/current/linux-rt-5.4.5_rt3-0-x86_64.pkg.tar.xz
-rw-r--r-- 1 rocketmouse rocketmouse 68753952 Dec  6 10:15 /var/cache/aur/current/linux-rt-cornflower-5.2.21_rt14-0-x86_64.pkg.tar.xz
-rw-r--r-- 1 rocketmouse rocketmouse 68745364 Dec 25 17:01 /var/cache/aur/current/linux-rt-pussytoes-5.2.21_rt15-0-x86_64.pkg.tar.xz
-rw-r--r-- 1 rocketmouse rocketmouse 70263924 Dec 25 13:46 /var/cache/aur/current/linux-rt-securityink-4.19.90_rt35-0-x86_64.pkg.tar.xz

Regards,
Ralf