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Adding CachyOS Repository for Enhanced Arch Linux Performance

Installing CachyOS repositories

Option 1: Automated Installation of cachyos repositories

We’ve made it easy for you! Simply run the following commands to use our helper script that does all the work for you. 😉

Run the following commands:

  1. Get archive with script
Terminal window
wget https://mirror.cachyos.org/cachyos-repo.tar.xz

If you don’t have wget, install it with sudo pacman -S wget

  1. Extract and enter into the archive
Terminal window
tar xvf cachyos-repo.tar.xz && cd cachyos-repo
  1. Run script with sudo
Terminal window
sudo ./cachyos-repo.sh

Behaviour of script

  1. Script will auto-detect CPU architecture, if CPU has x86-64-v4 or x86-64-v3 support, script will automatically use the repositories which are optimized with this flag > and some other flags.
  2. Script will backup your old pacman.conf.

For more information, check out our GitHub or join our Discord community.

Option 2: Manual Installation

  1. Install the cachyos keyring
Terminal window
sudo pacman-key --recv-keys F3B607488DB35A47 --keyserver keyserver.ubuntu.com
sudo pacman-key --lsign-key F3B607488DB35A47
  1. Install required packages
Terminal window
sudo pacman -U 'https://mirror.cachyos.org/repo/x86_64/cachyos/cachyos-keyring-3-1-any.pkg.tar.zst' \
'https://mirror.cachyos.org/repo/x86_64/cachyos/cachyos-mirrorlist-18-1-any.pkg.tar.zst' \
'https://mirror.cachyos.org/repo/x86_64/cachyos/cachyos-v3-mirrorlist-18-1-any.pkg.tar.zst' \
'https://mirror.cachyos.org/repo/x86_64/cachyos/cachyos-v4-mirrorlist-6-1-any.pkg.tar.zst' \
'https://mirror.cachyos.org/repo/x86_64/cachyos/pacman-6.0.2-16-x86_64.pkg.tar.zst'

Check CPU compatibility

If you want to add our repositories manually, you must check the compatibility of the CPU with cachyos repositories.

If you are using the script above to add cachyos repositories, you can skip the check.

1. Check support by running the following the command

Terminal window
/lib/ld-linux-x86-64.so.2 --help | grep supported

2. Understanding of command output

Pay attention to the following text with brackets. (supported, searched)

  • If you see x86-64-v4 (supported, searched), that means the CPU is compatible and can use x86-64-v4 instruction set.
  • If you see x86-64-v4, that means the CPU is incompatible and can’t use x86-64-v4 instruction set.

Example of CPU compatible with x86-64-v4 instruction set

> /lib/ld-linux-x86-64.so.2 --help | grep supported
x86-64-v4 (supported, searched)
x86-64-v3 (supported, searched)
x86-64-v2 (supported, searched)

Example of CPU incompatible with x86-64-v4 instruction set

> /lib/ld-linux-x86-64.so.2 --help | grep supported
x86-64-v3 (supported, searched)
x86-64-v2 (supported, searched)

3. Adding cachyos repositories

You need to edit pacman.conf and add repositories.

Terminal window
sudo nano /etc/pacman.conf

if your CPU supports x86-64, then add only [cachyos] repositories

# cachyos repos
[cachyos]
Include = /etc/pacman.d/cachyos-mirrorlist

if your CPU supports x86-64-v3, then add [cachyos-v3],[cachyos-core-v3],[cachyos-extra-v3] and [cachyos]

# cachyos repos
## Only add if your CPU does v3 architecture
[cachyos-v3]
Include = /etc/pacman.d/cachyos-v3-mirrorlist
[cachyos-core-v3]
Include = /etc/pacman.d/cachyos-v3-mirrorlist
[cachyos-extra-v3]
Include = /etc/pacman.d/cachyos-v3-mirrorlist
[cachyos]
Include = /etc/pacman.d/cachyos-mirrorlist

if your CPU supports x86-64-v4, then add [cachyos-v4], [cachyos-core-v4], [cachyos-extra-v4] and [cachyos]

# cachyos repos
## Only add if your CPU does support x86-64-v4 architecture
[cachyos-v4]
Include = /etc/pacman.d/cachyos-v4-mirrorlist
[cachyos-core-v4]
Include = /etc/pacman.d/cachyos-v4-mirrorlist
[cachyos-extra-v4]
Include = /etc/pacman.d/cachyos-v4-mirrorlist
[cachyos]
Include = /etc/pacman.d/cachyos-mirrorlist

Finally, update your system with CachyOS packages:

Terminal window
sudo pacman -Syu

Enjoy improved system speed with CachyOS packages 🎉

Debug packages

We provide a debuginfod server for easy access to debug symbols via gdb. Set the following environment variable:

Terminal window
export DEBUGINFOD_URLS=https://debuginfod.cachyos.org

Debug packages are available in the cachyos-debug-v3 repository. Add it with the following configuration:

[cachyos-debug-v3]
Server = https://debug.cachyos.org/repo/$arch_v3/$repo
[cachyos-core-debug-v3]
Server = https://debug.cachyos.org/repo/$arch_v3/$repo
[cachyos-extra-debug-v3]
Server = https://debug.cachyos.org/repo/$arch_v3/$repo

Uninstalling CachyOS repositories

Option 1: Automated Removal

Run these commands to remove the CachyOS repos from your system:

Terminal window
wget https://build.cachyos.org/cachyos-repo.tar.xz
tar xvf cachyos-repo.tar.xz
cd cachyos-repo
sudo ./cachyos-repo.sh --remove

Option 2: Manual Removal

  1. Backup or remove the config file at /etc/pacman.conf.
  2. Run this command:
Terminal window
sudo mv /etc/pacman.conf.bak /etc/pacman.conf
  1. Switch to default Arch Linux packages with this command:
Terminal window
sudo pacman -Suuy