device-postmarketos-trailblazer: move most depends to recommends

None of the devices running trailblazer actually need all these daemons
or firmware. Move almost everything to recommends so that users can free
up space and so that customised images can be built with
--no-recommends.

Since there are some folks already using trailblazer who DO depend on
these packages, let's try letting users know about this at least.

Signed-off-by: Caleb Connolly <caleb@postmarketos.org>
Part-of: https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/6239

device/testing/device-postmarketos-trailblazer/APKBUILD

@@ -4,30 +4,35 @@
 pkgname=device-postmarketos-trailblazer
 pkgdesc="postmarketOS Trailblazer generic ARM64"
 pkgver=12
-pkgrel=2
+pkgrel=3
 url="https://postmarketos.org"
 license="MIT"
 arch="aarch64"
 options="!check !archcheck"
 depends="
 	postmarketos-base
-	soc-qcom-qbootctl
+	systemd-boot
+"
+_pmb_recommends="
 	linux-firmware-qcom
 	linux-firmware-ath10k
 	linux-firmware-ath11k
 	linux-firmware-ath12k
 	linux-firmware-qca
 	linux-firmware-rtw88
+	firmware-siliconlabs-rs9116
+	firmware-brcm43752
+
+	soc-qcom-qbootctl
 	rmtfs
 	pd-mapper
 	tqftpserv
 	bootmac
-	systemd-boot
-	firmware-siliconlabs-rs9116
-	firmware-brcm43752
-	dtbloader
 	woa-firmware-yoinker
+
+	dtbloader
 "
+install="$pkgname.pre-upgrade"
 makedepends="devicepkg-dev"
 subpackages="
 	$pkgname-kernel-next:kernel_next

device/testing/device-postmarketos-trailblazer/device-postmarketos-trailblazer.pre-upgrade

@@ -0,0 +1,70 @@
+#!/bin/sh -e
+#
+# Handle packages that were moved from depends to _pmb_recommends by nuking
+# apk from orbit, adding the packages to world and then re-running it.
+
+# The old version of the package is passed in as the second argument
+OLD_VER="$2"
+NEW_VER="$1"
+old_ver_less() {
+	[ "$(apk version -t "$OLD_VER" "$1")" = "<" ]
+}
+
+# For a given upgrade, ensure that certain package are in
+# the world file, otherwise fail with a nice message letting
+# the user know how to manually add them
+ensure_installed() {
+	# $1: version to check
+	# $@: list of packages
+	local missing ver cmd
+
+	ver="$1"
+	shift
+
+	# Only applicable if upgrading from a version older
+	# than $ver, otherwise we're all good here.
+	if ! old_ver_less "$ver"; then
+		return
+	fi
+
+	# Determine which packages in our list aren't in /etc/apk/world
+	# these packages were moved from depends to _pmb_recommends and
+	# must be manually installed to ensure we don't break booting
+	missing="$(printf '%s\n' "$@" | grep -v -f /etc/apk/world | tr '\n' ' ')"
+	# None missing? then we're good!
+	[[ -n "$missing" ]] || return
+
+	printf '\n\n'
+	printf 'ERROR: some packages that your device might need are no longer installed\n'
+	printf '       automatically. To ensure your device continues to function as expected\n'
+	printf '       plese run the following command:\n\n'
+	printf '       apk add '
+	printf '%s ' $missing
+	printf '\n'
+
+	return 0
+}
+
+# We migrated everything that isn't required on ALL
+# platforms from depends to recommends in 12-r2. Since
+# we can't know which packages are in use, the user must
+# manually add them all to their world file for now. They
+# can uninstall any unused ones after the upgrade at their
+# own risk.
+ensure_installed 12-r2 \
+	linux-firmware-qcom \
+	linux-firmware-ath10k \
+	linux-firmware-ath11k \
+	linux-firmware-ath12k \
+	linux-firmware-qca \
+	linux-firmware-rtw88 \
+	firmware-siliconlabs-rs9116 \
+	firmware-brcm43752 \
+	soc-qcom-qbootctl \
+	rmtfs \
+	pd-mapper \
+	tqftpserv \
+	bootmac \
+	woa-firmware-yoinker \
+	dtbloader
+