davidandClaude Opus 5.5
a102e6fe0b
shellcheck / shellcheck (push) Successful in 11s
install.sh now stops early, with a clear message, if this isn't 64-bit Arch, it's run as root, there's no internet, or sudo doesn't work. system/preflight.sh then asks before going on with too little disk space or / not on btrfs, and offers to switch another login screen to GDM and PulseAudio to PipeWire. Keeping another login screen puts GDM in services-off, so install and update stop failing to enable it; a migration does the same on existing machines. It says nothing when all is well, as refresh runs install.sh again. Intel GPUs also get intel-media-driver for hardware video decoding, with a migration for existing machines. The mise migration links ~/.local/bin/mise to /usr/bin/mise instead of deleting it, so shells opened before the update don't print an error at every prompt. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
110 lines
3.8 KiB
Bash
110 lines
3.8 KiB
Bash
#!/bin/bash
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#
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# Purpose : Check the machine before install.sh sets it up, and offer to fix
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# what can be fixed: too little disk space, / not on btrfs, a login
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# screen other than GNOME's GDM, PulseAudio instead of PipeWire.
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# Exits 1 to stop the install. refresh runs install.sh again, so it
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# says nothing on a machine where all is well.
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COREDESKTOP="$HOME/.local/share/coredesktop"
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source "$COREDESKTOP/utils.sh"
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SERVICES_OFF="$HOME/.config/coredesktop/services-off"
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# install.sh is usually piped into bash, so ask on the terminal
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TTY="${COREDESKTOP_TTY:-/dev/tty}"
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# ask <question> <default y|n> <answer without a terminal y|n>
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ask() {
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local answer
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if ! { : < "$TTY"; } 2> /dev/null; then
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[ "$3" = y ]
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return
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fi
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if [ "$2" = y ]; then
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read -rp "$1 [Y/n] " answer < "$TTY"
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[[ "$answer" != [nN]* ]]
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else
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read -rp "$1 [y/N] " answer < "$TTY"
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[[ "$answer" == [yY]* ]]
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fi
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}
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# Set up before: install.sh records migrations as its last step
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already_installed() {
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[ -d "$HOME/.local/state/coredesktop/migrations" ]
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}
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check_disk() {
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local need=60 free
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already_installed && need=10
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free="$(df -k --output=avail / | tail -n 1 | tr -d ' ')"
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[[ "$free" =~ ^[0-9]+$ ]] || return 0
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free=$(( free / 1024 / 1024 ))
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(( free < need )) || return 0
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echo "Only $free GB is free on /, and this needs about $need GB."
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ask "Continue anyway?" n n
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}
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# Can't be fixed without reinstalling Arch, so only asked about the first time
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check_btrfs() {
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local fstype
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already_installed && return 0
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fstype="$(findmnt -no FSTYPE /)"
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[ "$fstype" = btrfs ] && return 0
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echo "/ is on $fstype, not btrfs, so update can't take a snapshot first, and a bad"
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echo "update can't be rolled back (see Snapshots in the README). Only reinstalling Arch"
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echo "with btrfs, archinstall's default, changes that."
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ask "Continue without snapshots?" y y
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}
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# CoreDesktop turns on GDM, which fails while another login screen is on
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check_display_manager() {
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local dm
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dm="$(readlink /etc/systemd/system/display-manager.service 2> /dev/null)"
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dm="$(basename "${dm:-none}")"
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[ "$dm" = none ] || [ "$dm" = gdm.service ] && return 0
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grep -qsx "system gdm.service" "$SERVICES_OFF" && return 0
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echo "This machine's login screen is ${dm%.service}, not GNOME's (GDM)."
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if ask "Switch to GNOME's login screen? It takes over when you restart." y n; then
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# enable_services turns GDM on later in the install
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sudo systemctl disable "$dm" || return 1
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else
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mkdir -p "$(dirname "$SERVICES_OFF")"
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echo "system gdm.service" >> "$SERVICES_OFF"
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echo "Keeping ${dm%.service}. Choose GNOME from its session menu when you log in."
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echo "To switch later: sudo systemctl disable $dm && sudo systemctl enable gdm"
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echo "then delete the line \"system gdm.service\" from $SERVICES_OFF"
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fi
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}
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# PipeWire replaces PulseAudio; GNOME's screen sharing needs it, and calls in
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# Jitsi and Element work best with it
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check_sound() {
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local plugins=()
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is_installed pulseaudio || return 0
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echo "This machine plays sound through PulseAudio. PipeWire replaces it: GNOME's"
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echo "screen sharing needs it, and calls in Jitsi and Element work best with it."
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if ! ask "Switch to PipeWire?" y n; then
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echo "Keeping PulseAudio."
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return 0
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fi
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# Its modules (bluetooth, ...) need it, so they go first; PipeWire does
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# what they did
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mapfile -t plugins < <(pacman -Qq | grep '^pulseaudio-')
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if (( ${#plugins[@]} > 0 )); then
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sudo pacman -R --noconfirm "${plugins[@]}" || return 1
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fi
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# --ask=4 answers yes to removing pulseaudio, which pipewire-pulse replaces
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sudo pacman -S --needed --noconfirm --ask=4 pipewire pipewire-pulse pipewire-alsa wireplumber || return 1
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echo "Switched to PipeWire. It takes over when you log out and in again."
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}
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check_disk || exit 1
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check_btrfs || exit 1
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check_display_manager || exit 1
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check_sound || exit 1
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exit 0
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