mkosi: Introduce build image

We want the exitrd image to be built with the latest systemd as well.
As the exitrd image is built as part of mkosi.images, and all subimages
are built before the main image, this implies the packages must be built
as a subimage in mkosi.images/ as well. So we introduce the build image and
move all logic related to building distribution packages there.

This also has the nice side effect of slimming down the main image as the
build dependencies are not installed into the main image anymore. It also
makes sure the packages are built in a "clean" chroot without any of the
other packages which we install in the main image available.

1 files changed, 16 insertions, 57 deletions

diff --git a/mkosi.conf.d/10-opensuse/mkosi.prepare b/mkosi.conf.d/10-opensuse/mkosi.prepare
index c57aa878b8..6ee0af2de9 100755
--- a/mkosi.conf.d/10-opensuse/mkosi.prepare
+++ b/mkosi.conf.d/10-opensuse/mkosi.prepare
@@ -2,63 +2,22 @@
 # SPDX-License-Identifier: LGPL-2.1-or-later
 set -e
 
-if [ "$1" = "build" ] || ((NO_BUILD)); then
+if [[ "$1" == "build" ]]; then
     exit 0
 fi
 
-# shellcheck source=/dev/null
-. "$BUILDROOT/usr/lib/os-release"
-ID="${ID%-*}"
-
-if [ ! -f "pkg/$ID/systemd.spec" ]; then
-    echo "spec not found at pkg/$ID/systemd.spec, run mkosi once with -ff to make sure the spec is cloned" >&2
-    exit 1
-fi
-
-# TODO: Drop when the spec is fixed (either the patch is adapted or not applied when building for upstream).
-sed --in-place '/0009-pid1-handle-console-specificities-weirdness-for-s390.patch/d' "pkg/$ID/systemd.spec"
-
-for DEPS in --requires --buildrequires; do
-    mkosi-chroot \
-        rpmspec \
-        --with upstream \
-        --query \
-        "$DEPS" \
-        --define "_topdir /var/tmp" \
-        --define "_sourcedir pkg/$ID" \
-        "pkg/$ID/systemd.spec" |
-            grep --invert-match --regexp systemd --regexp /bin/sh --regexp "rpmlib(" --regexp udev |
-            sort --unique |
-            tee /tmp/buildrequires |
-            xargs --delimiter '\n' mkosi-install
-done
-
-until mkosi-chroot \
-    rpmbuild \
-    -bd \
-    --build-in-place \
-    --with upstream \
-    --define "_topdir /var/tmp" \
-    --define "_sourcedir pkg/$ID" \
-    --define "_build_name_fmt %%{NAME}-%%{VERSION}-%%{RELEASE}.%%{ARCH}.rpm" \
-    "pkg/$ID/systemd.spec"
-do
-    EXIT_STATUS=$?
-    if [ $EXIT_STATUS -ne 11 ]; then
-        exit $EXIT_STATUS
-    fi
-
-    mkosi-chroot \
-        rpm \
-        --query \
-        --package \
-        --requires \
-        /var/tmp/SRPMS/systemd-*.buildreqs.nosrc.rpm |
-            grep --invert-match '^rpmlib(' |
-            sort --unique >/tmp/dynamic-buildrequires
-
-    sort /tmp/buildrequires /tmp/dynamic-buildrequires |
-        uniq --unique |
-        tee --append /tmp/buildrequires |
-        xargs --delimiter '\n' mkosi-install
-done
+DEPS=""
+
+while read -r PACKAGE; do
+    # zypper's output is not machine readable so we make do with sed instead.
+    DEPS="$DEPS\n$(
+        zypper info --requires --recommends --suggests "$PACKAGE" |
+            sed '/Requires/,$!d' | # Remove everything before Requires line
+            sed --quiet 's/^    //p' # All indented lines have dependencies
+    )"
+done < <(jq --raw-output .VolatilePackages[] <"$MKOSI_CONFIG")
+
+echo -e "$DEPS" |
+    grep --invert-match --regexp systemd --regexp udev --regexp qemu |
+    sort --unique |
+    xargs --delimiter '\n' --no-run-if-empty mkosi-install