iso/pacman.conf: document optional NoExtract size levers

Commented-out only. Keep the bakery-vs-pacman and SigLevel = Never
honesty comments already on main.

iso/airootfs/etc/calamares/post-install.sh

@@ -33,6 +33,32 @@ rm -f /usr/local/bin/bos-live-setup /usr/local/bin/bos-launch-calamares
 rm -f /etc/sudoers.d/99-bos-live
 userdel -r liveuser 2>/dev/null || true
 
+# unpackfs copies the entire live squashfs onto the target. Remove live-only
+# packages (Calamares + archiso boot chain + memtest/EFI-shell payloads) so
+# they do not stay on disk forever. pacman -Rs (not -Rns) keeps /etc configs
+# and reaps newly-orphaned KF6/Qt6 deps. Each name is independent so one
+# missing package cannot abort the rest. Offline-safe: never touches the
+# network. qt6-declarative is NOT reaped — qt6-wayland still needs it.
+LIVE_ONLY_PKGS=(
+    calamares
+    squashfs-tools
+    mkinitcpio-archiso
+    mkinitcpio-nfs-utils
+    memtest86+
+    memtest86+-efi
+    edk2-shell
+    syslinux
+)
+for pkg in "${LIVE_ONLY_PKGS[@]}"; do
+    pacman -Qq "$pkg" &>/dev/null || continue
+    pacman -Rs --noconfirm "$pkg" &>/dev/null \
+        || echo "WARN: could not remove live-only package $pkg"
+done
+while orphans="$(pacman -Qtdq 2>/dev/null)" && [[ -n "$orphans" ]]; do
+    # shellcheck disable=SC2086
+    pacman -Rs --noconfirm $orphans &>/dev/null || break
+done
+
 # Root used a passwordless entry on the live medium; lock it (sudo model).
 passwd -l root || true
 
@@ -344,15 +370,39 @@ fi
 #   greetd       — graphical login (shipped disabled; live uses tty autologin)
 #   grub-btrfsd  — regenerates GRUB snapshot entries (the unit is grub-btrfsd.service,
 #                  NOT grub-btrfs.path, which no longer exists)
+# avahi-daemon.service → avahi-daemon.socket: the package ships both; socket
+# activation still answers nss-mdns and CUPS discovery but stays off the idle
+# RSS until something asks. The host stops announcing itself over mDNS until
+# the socket is first touched.
 # ---------------------------------------------------------------------------
 for unit in NetworkManager.service bluetooth.service systemd-timesyncd.service \
             tlp.service greetd.service snapper-cleanup.timer grub-btrfsd.service \
-            fstrim.timer cups.socket avahi-daemon.service ufw.service \
+            fstrim.timer cups.socket avahi-daemon.socket ufw.service \
             fwupd-refresh.timer reflector.timer; do
     systemctl enable "$unit" || echo "WARN: failed to enable $unit"
 done
 systemctl set-default graphical.target || echo "WARN: set-default graphical failed"
 
+# Arch's 90-systemd.preset enables systemd-homed / userdbd / nsresourced.
+# BOS creates classic /etc/passwd accounts and never calls homectl. Mask
+# (not disable) so preset-all or a systemd upgrade cannot re-enable them.
+for unit in systemd-homed.service systemd-homed-activate.service \
+            systemd-userdbd.service systemd-userdbd.socket \
+            systemd-nsresourced.service systemd-nsresourced.socket; do
+    systemctl mask "$unit" || echo "WARN: failed to mask $unit"
+done
+
+# journald defaults SystemMaxUse to 10% of the filesystem holding /var/log.
+# /var/log is the @log subvolume of the root pool, so that ceiling is tens
+# of GB. Cap it; less history for postmortems.
+install -d -m 0755 /etc/systemd/journald.conf.d
+cat >/etc/systemd/journald.conf.d/90-bos-journal.conf <<'JOURNALEOF'
+[Journal]
+SystemMaxUse=256M
+SystemMaxFileSize=32M
+RuntimeMaxUse=32M
+JOURNALEOF
+
 # ---------------------------------------------------------------------------
 # mDNS resolution (nss-mdns): insert mdns_minimal into the hosts: line so the
 # resolver answers *.local (network printers, other hosts) via avahi. Idempotent.

iso/airootfs/etc/skel/.config/hypr/hyprland.lua

@@ -94,6 +94,12 @@ pcall(function()
         bindings     = binds.bindings,
     })
 end)
+-- 3-finger horizontal trackpad swipe → workspace switch (1:1 gesture)
+hl.gesture({
+    fingers   = 3,
+    direction = "horizontal",
+    action    = "workspace",
+})
 
 -- ---------------------------------------------------------------------------
 -- Autostart. Core bootstrap sequence (polkit agent, dark theme, wallpaper
@@ -168,10 +174,3 @@ hl.on("hyprland.start", function()
         hl.dispatch(hl.dsp.exec_cmd(cmd))
     end
 end)
-
-
-hl.gesture({
-    fingers   = 3,
-    direction = "horizontal",
-    action    = "workspace",
-})

iso/packages.x86_64

@@ -1,9 +1,26 @@
 # Base system
 base
-base-devel
 linux
-linux-firmware
-linux-headers
+# linux-firmware metapackage pulls every mandatory vendor blob (incl. nvidia).
+# List the subpackages we actually need so nvidia (~103 MiB, nouveau-only —
+# BOS ships no NVIDIA driver) can stay off the image. Turing+ nouveau needs
+# the GSP blobs; reinstall linux-firmware-nvidia when lspci sees NVIDIA.
+# linux-firmware
+linux-firmware-amdgpu
+linux-firmware-atheros
+linux-firmware-broadcom
+linux-firmware-cirrus
+linux-firmware-intel
+linux-firmware-mediatek
+linux-firmware-realtek
+linux-firmware-radeon
+linux-firmware-other
+# linux-firmware-nvidia
+# base-devel + linux-headers are for AUR/DKMS builds. yay needs base-devel,
+# but those builds need network anyway — pacman -S base-devel at that point.
+# linux-headers is DKMS-only and BOS ships no DKMS packages.
+# base-devel
+# linux-headers
 # CPU microcode — applied early by GRUB on the installed system (picked up by
 # the bootloader module). amd-ucode for the dev laptop's Ryzen; intel-ucode for
 # Intel targets. bos-copy-kernel also stages these into the live target /boot.
@@ -44,7 +61,7 @@ sbctl
 squashfs-tools
 # rsync: unpackfs copies the unpacked rootfs onto the target with rsync.
 rsync
-# Live-ISO boot (archiso bootmodes: bios.syslinux + uefi.systemd-boot)
+# Live-ISO boot (archiso bootmodes: bios.syslinux + uefi.grub)
 # mkinitcpio-archiso provides the initramfs hooks that find and mount
 # airootfs.sfs and switch root into it — without it the live ISO drops
 # to emergency mode on boot.
@@ -131,7 +148,9 @@ wayland-protocols
 
 # Fonts
 noto-fonts
-noto-fonts-cjk
+# noto-fonts-cjk is ~299 MiB installed / ~196 MiB on the ISO and only useful
+# to CJK-locale users. Install on first run for zh/ja/ko.
+# noto-fonts-cjk
 noto-fonts-emoji
 ttf-jetbrains-mono
 # Nerd font variant — icons in terminal tools (eza --icons, fastfetch, yazi)
@@ -157,13 +176,12 @@ file-roller
 
 # GUI applications a general desktop is expected to have out of the box.
 # gnome-text-editor: graphical editor (terminal editors aside); gnome-calculator:
-# calculator; loupe: Wayland-native image viewer (default for image files);
-# zathura(+pdf-mupdf): lightweight Wayland PDF viewer (BOS had no PDF reader).
+# calculator; loupe: Wayland-native image viewer (default for image files).
+# PDF is handled by Zen (skel mimeapps.list maps application/pdf to zen.desktop);
+# zathura+zathura-pdf-mupdf would pull libmupdf (~56 MiB) as a never-default viewer.
 gnome-text-editor
 gnome-calculator
 loupe
-zathura
-zathura-pdf-mupdf
 # Media player — BOS ships gstreamer codecs but otherwise has no player app.
 vlc
 # Web browser (served from the [Breadway] repo; AUR zen-browser-bin republished

iso/pacman.conf

@@ -9,6 +9,23 @@ Architecture = auto
 CheckSpace
 ParallelDownloads = 5
 
+# Optional NoExtract size levers — left disabled. This file is both the ISO
+# build config AND the installed system's pacman.conf, so enabling any line
+# also stops future pacman -Syu from restoring those files.
+# Measured against the 844-package closure (xz squashfs, profiledef.sh opts):
+#   usr/share/locale (non-en)  405.0 MiB raw -> 92.28 MiB ISO
+#   usr/share/doc              130.5 MiB raw -> 26.54 MiB ISO
+#   usr/share/man               41.5 MiB raw -> 38.77 MiB ISO
+#   usr/share/info              12.9 MiB raw -> 11.12 MiB ISO
+#   usr/share/gtk-doc           16.0 MiB raw ->  1.18 MiB ISO
+#   usr/include                193.6 MiB raw -> 25.26 MiB ISO
+# Non-en locales make every GUI English-only until the package is reinstalled
+# without this NoExtract; dropping man/info means `man` returns nothing.
+#NoExtract   = usr/share/locale/* !usr/share/locale/en* !usr/share/locale/locale.alias
+#NoExtract   = usr/share/doc/* usr/share/gtk-doc/* usr/share/info/*
+#NoExtract   = usr/share/man/*
+#NoExtract   = usr/include/*
+
 Color
 VerbosePkgLists
 ILoveCandy

iso/profiledef.sh

@@ -8,7 +8,12 @@ iso_application="Bread Operating System"
 iso_version="$(date +%Y.%m.%d)"
 install_dir="arch"
 buildmodes=('iso')
-bootmodes=('bios.syslinux' 'uefi.systemd-boot')
+# systemd-boot can only read files from the ESP it was launched from, so
+# mkarchiso's _make_bootmode_uefi.systemd-boot copies vmlinuz + initramfs
+# INTO the FAT efiboot.img on top of the copy already on ISO9660 (~244 MiB
+# duplicate). uefi.grub's ESP is only EFI + shell*.efi — GRUB reads ISO9660
+# directly. iso/grub/{grub,loopback}.cfg are already BOS-branded.
+bootmodes=('bios.syslinux' 'uefi.grub')
 arch="x86_64"
 pacman_conf="pacman.conf"
 airootfs_image_type="squashfs"

packaging/bibata/PKGBUILD

@@ -16,7 +16,13 @@ options=('!strip')
 source=("${pkgname%-bin}-$pkgver.tar.xz::$url/releases/download/v$pkgver/Bibata.tar.xz")
 sha256sums=('172e33c4ae415278384dcecc7d1a9b7a024266bc944bc751fd86532be1cc6251')
 
+# Upstream tarball has all 12 variants (~322 MiB). BOS only ever selects
+# Bibata-Modern-Ice (hyprland.lua XCURSOR_THEME, gsettings, gtk settings.ini).
+# Ship that plus its -Right sibling.
+_variants=(Bibata-Modern-Ice Bibata-Modern-Ice-Right)
 package() {
   install -d "$pkgdir/usr/share/icons"
-  cp -r Bibata* "$pkgdir/usr/share/icons"
+  for v in "${_variants[@]}"; do
+    cp -r "$v" "$pkgdir/usr/share/icons/"
+  done
 }