feat: Steam's OS Version is the SteamOS release Steamify follows (steamos-3.9), its OS Codename steam-machine; About this System keeps "CachyOS Linux" (UseOSReleaseVersion)

patches/steamify-os-release.sh

@@ -1,13 +1,14 @@
 #!/bin/sh
 # Installed by Steamify CachyOS (SteamOS conversion): what Steam shows in its
-# System settings besides the OS name, which stays CachyOS's: Steamify as the
-# variant with its version, and the SteamOS release it follows as the
-# codename (/etc/os-release's VARIANT, VERSION_CODENAME). No VERSION_ID: KDE's
-# About this System would show it after CachyOS's name ("CachyOS Linux 2.9.0"). NAME and
+# System settings besides the OS name, which stays CachyOS's: the SteamOS
+# release Steamify follows as the OS version (VERSION_ID, e.g. steamos-3.9),
+# steam-machine as the codename, and Steamify with its version as the variant
+# (VARIANT_ID, which Steam shows). KDE's About this System would show
+# VERSION_ID after the name: the conversion sets its UseOSReleaseVersion, so it
+# shows os-release's VERSION instead, which CachyOS doesn't have. NAME and
 # PRETTY_NAME are never touched: limine-snapper-sync finds the boot entries by
 # the OS name. The zz-steamify-os-release hook runs this after cachyos-hooks.
 sed -i -e '/^VARIANT=/d' -e '/^VARIANT_ID=/d' -e '/^VERSION_ID=/d' -e '/^VERSION_CODENAME=/d' /etc/os-release
-# Steam shows VARIANT_ID as the OS Variant: the version goes in there too.
-printf '%s\n' 'VARIANT="Steamify @VERSION@"' 'VARIANT_ID=steamify-@VERSION@' >> /etc/os-release
-[ -n "@CODENAME@" ] && echo 'VERSION_CODENAME=@CODENAME@' >> /etc/os-release
+printf '%s\n' 'VARIANT="Steamify @VERSION@"' 'VARIANT_ID=steamify-@VERSION@' 'VERSION_CODENAME=steam-machine' >> /etc/os-release
+[ -n "@STEAMOS@" ] && echo 'VERSION_ID=@STEAMOS@' >> /etc/os-release
 exit 0