feat: Steam's System settings and About this System like on SteamOS: OS name, Steamify as OS variant and version, serial number and Wi-Fi backend on a Steam Machine

AGENTS.md

@@ -311,6 +311,15 @@ gamescope and the Plasma desktop. Primary target: the Valve Steam Machine
   `steamify.sh --boot gamescope|desktop` on its own (2.7.0, for scripts) only
   switches `boot` on an installed conversion: `WANTED` is `CURRENT` plus
   that, so no updates or removals a normal run would pick.
+- OS name for Steam (SteamOS conversion, 2.9.0): Steam's System settings
+  show `lsb_release -d`, so only `DISTRIB_DESCRIPTION` in `/etc/lsb-release`
+  becomes "CachyOS with Steamify" (a pacman hook, `zz-steamify-os-release`,
+  sets it again after cachyos-hooks resets it). In `/etc/os-release` only
+  `VARIANT`/`VARIANT_ID`/`VERSION_ID` (Steam's OS version, refreshed by
+  `os_version_refresh` after every run that changes something); never `NAME`
+  or `PRETTY_NAME`: limine-snapper-sync finds the boot entries by the OS name
+  ("Target OS name ... not found in /boot/limine.conf"). As a guard,
+  `/etc/default/limine` gets `TARGET_OS_NAME="CachyOS"` when it has none.
 - `Relogin=true` means a gamescope that fails to start is relaunched in a
   tight loop; keep that in mind when changing session handling.
 

CHANGELOG.md

@@ -7,7 +7,8 @@ one per merged pull request.
 
 ## 2.9.0 - 2026-09-28
 
-- **chore: Version 2.9.0**
+- `d30d505` **chore: Version 2.9.0**
+- **feat: Steam's System settings and About this System like on SteamOS: OS name "CachyOS with Steamify" (lsb-release, kept through CachyOS updates by a pacman hook), Steamify as OS variant and version (os-release VARIANT/VERSION_ID; NAME/PRETTY_NAME stay CachyOS's for limine, TARGET_OS_NAME pinned), "CachyOS Linux with Steamify" in About this System; on a Steam Machine the serial number and Steam's Wi-Fi backend setting (existing installs get it as an update)**
 
 ## 2.8.0 - 2026-09-28
 

lib/backend.sh

@@ -177,6 +177,7 @@ backend_apply() {
         if backend_run_component "$c" enable; then is_action "$c" || feature_record "$c" enable; else failed+=("$c"); fi
     done
     feature_record_unticked
+    os_version_refresh
     [[ " ${TO_DISABLE[*]} ${TO_ENABLE[*]} " =~ \ (gaming|single|boot|kpin)\  ]] && RESTART_FOR_LOGIN=true
     backend_event finished "\"failed\":$(json_list "${failed[@]}"),\"restart\":$(restart_needed && echo true || echo false)"
 }

lib/login-manager.sh

@@ -18,6 +18,55 @@ gaming_status() {
     esac
 }
 
+# What Steam shows in its System settings: the OS name (`lsb_release -d`:
+# DISTRIB_DESCRIPTION in /etc/lsb-release) and Steamify as the OS variant and
+# version (os-release's VARIANT/VERSION_ID; its NAME and PRETTY_NAME stay
+# CachyOS's, which limine-snapper-sync finds the boot entries by).
+# cachyos-hooks resets lsb-release on updates, so our hook sets it again.
+OS_NAME_SCRIPT=/usr/local/libexec/steamify-os-release
+OS_NAME_HOOK=/etc/pacman.d/hooks/zz-steamify-os-release.hook
+# limine's tools take the OS name from TARGET_OS_NAME, else os-release's
+# PRETTY_NAME: pinned to CachyOS, the boot entries never depend on os-release.
+LIMINE_DEFAULTS=/etc/default/limine
+
+os_name_enable() {
+    patch_file steamify-os-release.sh | fill VERSION="$VERSION" | sudo install -Dm755 /dev/stdin "$OS_NAME_SCRIPT" &&
+        patch_file steamify-os-release.hook | fill SCRIPT="$OS_NAME_SCRIPT" |
+            sudo install -Dm644 /dev/stdin "$OS_NAME_HOOK" &&
+        sudo "$OS_NAME_SCRIPT" || { err "Setting the OS name for Steam failed."; return 1; }
+    if [[ -f "$LIMINE_DEFAULTS" ]] && ! grep -q '^TARGET_OS_NAME=' "$LIMINE_DEFAULTS"; then
+        backup_file "$LIMINE_DEFAULTS"
+        printf '%s\n' 'TARGET_OS_NAME="CachyOS"' | sudo tee -a "$LIMINE_DEFAULTS" > /dev/null
+        state_set gaming limine_target 1
+    fi
+    return 0
+}
+
+os_name_disable() {
+    sudo rm -f "$OS_NAME_HOOK" "$OS_NAME_SCRIPT"
+    [[ -f /etc/os-release ]] && sudo sed -i -e '/^VARIANT=/d' -e '/^VARIANT_ID=/d' -e '/^VERSION_ID=/d' /etc/os-release
+    # CachyOS's own values back, the way its hooks write them.
+    if [[ -x /usr/share/libalpm/scripts/cachyos-branding ]]; then
+        sudo /usr/share/libalpm/scripts/cachyos-branding os-release
+        sudo /usr/share/libalpm/scripts/cachyos-branding lsb-release
+    fi
+    if [[ -n "$(state_get gaming limine_target)" ]]; then
+        sudo sed -i '/^TARGET_OS_NAME="CachyOS"$/d' "$LIMINE_DEFAULTS"
+        state_set gaming limine_target ""
+    fi
+    return 0
+}
+
+os_version_refresh() {
+    # After every run that changed something (sudo is at hand then): Steam's
+    # OS version follows Steamify's, not just the one that set it up. Silent:
+    # the app reads the backend's stdout as JSON.
+    gaming_status 2>/dev/null || return 0
+    grep -qx "VERSION_ID=$VERSION" /etc/os-release 2>/dev/null && return 0
+    os_name_enable > /dev/null 2>&1
+    return 0
+}
+
 gaming_enable() {
     # LOGIN_MANAGER (sddm with single user, else plasmalogin) is set by the
     # menu. Re-running with the other value switches over cleanly.
@@ -37,6 +86,10 @@ gaming_enable() {
     esac
     create_desktop_shortcut
     steam_enable
+    # System Settings' About this System: the name KInfoCenter shows instead
+    # of os-release's (package-owned, so not edited).
+    kset gaming kcm-about-distrorc General Name "CachyOS Linux with Steamify"
+    os_name_enable || return 1
 }
 
 gaming_disable() {
@@ -49,6 +102,8 @@ gaming_disable() {
     switch_to_plasmalogin
     remove_desktop_shortcut
     steam_disable
+    krevert gaming
+    os_name_disable
     ok "The PC boots to the normal login screen again (from the next boot)."
 }
 

lib/menu.sh

@@ -25,8 +25,8 @@ NO_PRESELECT=(boot cec kpin hdmi)
 # FEATURE_BASELINE.
 FEATURE_BASELINE=2.1.0
 declare -A FEATURE_VERSION=(
-    [gaming]=2.1.0 [boot]=2.1.0 [theme]=2.1.0 [glyphs]=2.1.0 [single]=2.1.0
-    [launcher]=2.1.0 [cec]=2.7.0 [machine]=2.2.0 [poweroff]=2.2.0 [vram]=2.3.0 [notify]=2.5.0 [steamgame]=2.5.1
+    [gaming]=2.9.0 [boot]=2.1.0 [theme]=2.1.0 [glyphs]=2.1.0 [single]=2.1.0
+    [launcher]=2.1.0 [cec]=2.7.0 [machine]=2.9.0 [poweroff]=2.2.0 [vram]=2.3.0 [notify]=2.5.0 [steamgame]=2.5.1
     [kpin]=2.1.0 [hdmi]=2.1.0
 )
 
@@ -465,5 +465,6 @@ apply_changes() {
         if "${c}_enable"; then is_action "$c" || feature_record "$c" enable; else failed+=("$c"); fi
     done
     feature_record_unticked
+    os_version_refresh
     FAILED=("${failed[@]}")
 }

lib/steam-machine.sh

@@ -378,6 +378,46 @@ machine_status() {
     pacman -Qi leds-valve-dkms-git >/dev/null 2>&1 && pacman -Qi steamos-manager >/dev/null 2>&1
 }
 
+# Steam (steamwebhelper) reads the serial number for its System settings
+# straight from DMI, which the kernel makes root-only; SteamOS makes it
+# readable. A tmpfiles rule does that at every boot.
+SERIAL_TMPFILES=/etc/tmpfiles.d/steamify-serial.conf
+
+# Steam's Wi-Fi backend switch goes through steamos-manager, which reads and
+# writes the backend in this file (SteamOS ships it); without it, it fails
+# with "Wi-Fi backend not found in config". wpa_supplicant is what
+# NetworkManager uses on CachyOS anyway. Not written when someone set a
+# backend themselves.
+WIFI_BACKEND_CONF=/etc/NetworkManager/conf.d/99-valve-wifi-backend.conf
+
+wifi_backend_enable() {
+    [[ -f "$WIFI_BACKEND_CONF" ]] && return 0
+    grep -rqs '^wifi.backend=' /etc/NetworkManager/NetworkManager.conf /etc/NetworkManager/conf.d && return 0
+    printf '%s\n' "# Written by Steamify: Steam's Wi-Fi backend setting (steamos-manager)." \
+        '[device]' 'wifi.backend=wpa_supplicant' | sudo install -Dm644 /dev/stdin "$WIFI_BACKEND_CONF" ||
+        { err "Writing the Wi-Fi backend setting failed."; return 1; }
+    state_set machine wifi_backend 1
+}
+
+wifi_backend_disable() {
+    [[ -n "$(state_get machine wifi_backend)" ]] || return 0
+    sudo rm -f "$WIFI_BACKEND_CONF"
+    state_clear machine
+}
+
+serial_enable() {
+    printf '%s\n' "# Written by Steamify: Steam shows the serial number, like on SteamOS." \
+        'z /sys/class/dmi/id/product_serial 0444 - - -' | sudo tee "$SERIAL_TMPFILES" > /dev/null &&
+        sudo systemd-tmpfiles --create "$SERIAL_TMPFILES" ||
+        { err "Making the serial number readable for Steam failed."; return 1; }
+}
+
+serial_disable() {
+    sudo rm -f "$SERIAL_TMPFILES"
+    sudo chmod 0400 /sys/class/dmi/id/product_serial 2>/dev/null
+    return 0
+}
+
 machine_enable() {
     # The pinned kernel first when it's wanted too, so DKMS builds the LED
     # driver for it once, instead of for the current kernel and then again.
@@ -403,6 +443,8 @@ EOF
     # for hardware and controller settings; it knows the Steam Machine from its DMI data.
     info "Installing hardware manager packages (steamos-manager & inputplumber)..."
     sudo pacman -S --needed --noconfirm steamos-manager inputplumber || { err "Installing hardware manager packages failed."; return 1; }
+    serial_enable || return 1
+    wifi_backend_enable || return 1
     sudo systemctl enable --now inputplumber.service
     sudo systemctl enable --now steamos-manager.service
     user_systemctl enable steamos-manager.service 2>/dev/null
@@ -426,6 +468,8 @@ machine_disable() {
     sudo systemctl disable --now steamos-manager.service 2>/dev/null
     sudo systemctl disable --now inputplumber.service 2>/dev/null
     sudo pacman -Rns --noconfirm steamos-manager inputplumber 2>/dev/null
+    serial_disable
+    wifi_backend_disable
     sudo rm -f "$LED_UDEV_RULE" /etc/modules-load.d/leds-valve.conf
     sudo udevadm control --reload
     sudo modprobe -r leds-valve 2>/dev/null

patches/README.md

@@ -13,4 +13,5 @@ read and reviewed on their own. `lib/*.sh` reads them with `patch_file
 | `steamify-fremont-poweroff.dkms.conf`, `steamify-cros-ec-cec.dkms.conf` | `lib/fremont-poweroff.sh`, `lib/cec.sh` | The DKMS modules' `dkms.conf` (`fill NAME=... VERSION=...`) |
 | `steam-shortcuts.py` | `lib/steam-game.sh` (Add as non-Steam game) | Reads and writes Steam's binary `shortcuts.vdf` (find, add or update, remove) |
 | `steamify-notifier.py` | `lib/update-notifier.sh` (Update notifications) | The daily check: notification and tray icon when there's a new release |
+| `steamify-os-release.sh`, `steamify-os-release.hook` | `lib/login-manager.sh` (SteamOS conversion) | Sets the OS name Steam shows ("CachyOS with Steamify": `DISTRIB_DESCRIPTION` in `/etc/lsb-release`, which `lsb_release -d` gives Steam; never `/etc/os-release`, whose `PRETTY_NAME` limine-snapper-sync needs); the pacman hook runs it again after cachyos-hooks resets it (`fill SCRIPT=...`) |
 | `cros-ec-cec-single-port.patch` | `lib/cec.sh` (HDMI-CEC) | Makes Valve's Steam Machine CEC driver find amdgpu's HDMI port |

patches/steamify-os-release.hook

@@ -0,0 +1,15 @@
+# Installed by Steamify CachyOS (SteamOS conversion): runs after
+# cachyos-hooks' lsb-release/cachyos-branding hooks (hooks run in file name
+# order).
+[Trigger]
+Operation = Install
+Operation = Upgrade
+Type = Package
+Target = filesystem
+Target = lsb-release
+Target = cachyos-hooks
+
+[Action]
+Description = Steamify: the OS name Steam shows (CachyOS with Steamify)
+When = PostTransaction
+Exec = @SCRIPT@

patches/steamify-os-release.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+# Installed by Steamify CachyOS (SteamOS conversion): what Steam shows in its
+# System settings. The OS name is `lsb_release -d` (DISTRIB_DESCRIPTION in
+# /etc/lsb-release); the version comes from /etc/os-release's VARIANT and
+# VERSION_ID. CachyOS's hooks reset lsb-release on updates of lsb-release and
+# cachyos-hooks; the zz-steamify-os-release hook runs this after them.
+# os-release's NAME and PRETTY_NAME stay CachyOS's: limine-snapper-sync finds
+# the boot entries by the OS name.
+sed -i 's|^DISTRIB_DESCRIPTION=.*$|DISTRIB_DESCRIPTION="CachyOS with Steamify"|' /etc/lsb-release
+sed -i -e '/^VARIANT=/d' -e '/^VARIANT_ID=/d' -e '/^VERSION_ID=/d' /etc/os-release
+printf '%s\n' 'VARIANT="Steamify"' 'VARIANT_ID=steamify' 'VERSION_ID=@VERSION@' >> /etc/os-release