feat: Steamify's choices in the installer: a Steam Machine page (what to leave out) and a Start in page (gaming mode or desktop), passed to steamify.sh --defaults

archiso/airootfs/etc/calamares/modules/packagechooser_steamifyboot.conf

@@ -0,0 +1,16 @@
+# Steamify: where the Steam Machine starts (steamify-install passes --boot).
+---
+mode: required
+method: legacy
+labels:
+    step: "Start in"
+default: gamescope
+items:
+    - id: gamescope
+      name: "Gaming mode"
+      description: "Start straight into Steam's gaming mode, like SteamOS. Switch to Desktop in Steam's power menu brings you to the desktop."
+      screenshot: ":/images/no-selection.png"
+    - id: desktop
+      name: "Desktop"
+      description: "Start in the Plasma desktop. Return to Gaming Mode on the desktop brings you to Steam's gaming mode."
+      screenshot: ":/images/no-selection.png"

archiso/airootfs/etc/calamares/modules/packagechooser_steamifyskip.conf

@@ -0,0 +1,37 @@
+# Steamify: which parts of the Steam Machine setup to leave out. Nothing
+# selected means Steamify's full default setup; the ids are Steamify's menu
+# items (steamify-install passes them as --skip).
+---
+mode: optionalmultiple
+method: legacy
+labels:
+    step: "Steam Machine"
+items:
+    - id: ""
+      name: "Everything"
+      description: "Select what to leave out of the Steam Machine setup (Steamify). Leave everything unselected for the full SteamOS-style setup; everything can be changed later in the Steamify app."
+      screenshot: ":/images/no-selection.png"
+    - id: theme
+      name: "Leave out: SteamOS theme"
+      description: "The Vapor look for the desktop, with SteamOS's panel layout and Add to Steam."
+    - id: glyphs
+      name: "Leave out: Steam Deck/Machine icons"
+      description: "Steam Deck button icons in gaming mode."
+    - id: single
+      name: "Leave out: single user mode"
+      description: "No password, lock screen, user switching or log out, like SteamOS."
+    - id: launcher
+      name: "Leave out: Steamify shortcut"
+      description: "The Steamify app on the desktop and in the launcher, to change these choices later."
+    - id: notify
+      name: "Leave out: update notifications"
+      description: "A notification when there's a new Steamify. It never updates by itself."
+    - id: vram
+      name: "Leave out: VRAM booster"
+      description: "The game in front keeps its video memory; background apps make room."
+    - id: cec
+      name: "Leave out: HDMI-CEC"
+      description: "Use Steam with the TV remote, TV on and off with the Steam Machine."
+    - id: machine
+      name: "Leave out: Steam Machine support"
+      description: "The LED bar driver, hardware settings in Steam and the power-off fix."

archiso/airootfs/etc/calamares/modules/shellprocess_steamify.conf

@@ -4,7 +4,7 @@
 dontChroot: true
 timeout: 3600
 script:
-    - "-/usr/local/bin/steamify-install ${ROOT} ${USER}"
+    - "-/usr/local/bin/steamify-install ${ROOT} ${USER} \"${gs[packagechooser_steamifyskip]}\" \"${gs[packagechooser_steamifyboot]}\""
 
 i18n:
     name: "Setting up the Steam Machine (Steamify)"

archiso/airootfs/usr/local/bin/calamares-online.sh

@@ -47,7 +47,8 @@ EOF
     sudo cp "/usr/share/calamares/settings_${mode}.conf" /etc/calamares/settings.conf
     # Steamify: its step (modules/shellprocess_steamify.conf) before the
     # installer cleans up after itself.
-    sudo sed -i -e 's/^- id:       cleanup_calamares$/- id:       steamify\n  module:   shellprocess\n  config:   shellprocess_steamify.conf\n\n&/' \
+    sudo sed -i -e 's/^- id:       cleanup_calamares$/- id:       steamifyskip\n  module:   packagechooser\n  config:   packagechooser_steamifyskip.conf\n\n- id:       steamifyboot\n  module:   packagechooser\n  config:   packagechooser_steamifyboot.conf\n\n- id:       steamify\n  module:   shellprocess\n  config:   shellprocess_steamify.conf\n\n&/' \
+        -e 's/^  - packagechooser@desktop$/&\n  - packagechooser@steamifyskip\n  - packagechooser@steamifyboot/' \
         -e 's/^  - shellprocess@cleanup_calamares$/  - shellprocess@steamify\n&/' /etc/calamares/settings.conf
     exec pkexec-wrapper calamares -D6 >> $log
 }

archiso/airootfs/usr/local/bin/steamify-install

@@ -1,11 +1,16 @@
 #!/bin/bash
-# steamify-install <target root> <user>: runs Steamify's default setup for
+# steamify-install <target root> <user> [<skip ids>] [gamescope|desktop]:
+# runs Steamify's default setup (minus what the installer's Steam Machine
+# page leaves out, where the boot page says) for
 # the new user inside the installed system (Calamares, after the users and
 # services steps). Steamify refuses root and asks sudo per command, so the
 # user gets a NOPASSWD rule for this run only, named to be read last: sudo
 # takes the last matching rule, and a later %wheel rule would ask again. Never fails the install: a
 # problem leaves the log and Steamify can be run again from the desktop.
 root="$1" user="$2"
+# The pages' ids, comma-separated; the "Everything" entry is an empty id.
+skip="$(tr ',' '\n' <<< "${3:-}" | grep -v '^$' | paste -sd, -)"
+boot="${4:-gamescope}"
 log="$root/var/log/steamify-install.log"
 rule="$root/etc/sudoers.d/zz-steamify-install"
 [[ -d "$root" && -n "$user" ]] || exit 0
@@ -15,7 +20,7 @@ printf '%s ALL=(ALL) NOPASSWD: ALL\n' "$user" > "$rule"
 chmod 440 "$rule"
 arch-chroot "$root" runuser -u "$user" -- env -i HOME="/home/$user" USER="$user" LOGNAME="$user" \
     PATH=/usr/local/bin:/usr/bin TERM=dumb LANG=C.UTF-8 \
-    bash -c 'cd ~ && bash /var/tmp/steamify.sh --defaults < /dev/null' > "$log" 2>&1
+    bash -c 'cd ~ && bash /var/tmp/steamify.sh --defaults --skip "$0" --boot "$1" < /dev/null' "$skip" "$boot" > "$log" 2>&1
 echo "exit: $?" >> "$log"
 rm -f "$rule" "$root/var/tmp/steamify.sh"
 exit 0