[linux_distributions][steamos] List differences between SteamOS and Arch Linux

Only one mirror is used (and it has a CDN).

$ cat /etc/pacman.d/mirrorlist
Server = https://steamdeck-packages.steamos.cloud.cloud/archlinux-mirror/$repo/os/$arch

SteamOS has two repositories (1) jupiter and (2) holo that are higher priority than the default Arch Linux repositories.


$ grep -B 1 -A 1 -P ^Include /etc/pacman.conf
[jupiter]
Include = /etc/pacman.d/mirrorlist
SigLevel = Never
--
[holo]
Include = /etc/pacman.d/mirrorlist
SigLevel = Never
--
[core]
Include = /etc/pacman.d/mirrorlist

-- [extra] Include = /etc/pacman.d/mirrorlist

-- [community] Include = /etc/pacman.d/mirrorlist

-- [multilib] Include = /etc/pacman.d/mirrorlist


- The `holo/filesystem` package creates the directory `/efi` and a symlink from `/boot/efi` to it.
- The `holo/linux` and `holo/linux-lts` packages store kernel modules in `/usr/lib/steamos/modules/<KERNEL_VERSION>/` instead of `/usr/lib/modules/<KERNEL_VERSION>/`. Upstream GRUB is unable to find Linux kernels and modules in the SteamOS path making them unbootable.
- `jupiter/linux-firmware-neptune` provides firmware only for the Steam Deck but it conflicts and will remove `core/linux-firmware` that provides supports for all PCs.
- `jupiter/mesa` only provides three OpenGL drivers: (1) radeonsi, (2) swrast, and (3) zink.
- `/mnt` is a symlink to `/var/mnt`.

LukeShortCloud / rootpages

[linux_distributions][steamos] List differences between SteamOS and Arch Linux #680