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systemd/mkosi.presets/10-initrd.conf

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mkosi: Switch to use mkosi presets with prebuilt initrds Instead of building the initrds for the mkosi images with dracut, let's switch to using mkosi presets to build the initrd with mkosi as well. This commit splits up our single image build into three separate mkosi presets: 1. The "base" preset. This image contains systemd and all its runtime dependencies. The sole purpose of this image is to serve as a base image for the initrd and the final image. It's also responsible for building systemd from source with the build script. The results are installed into the base image. Note that we install the systemd and udev packages into this image as well to prevent package managers from overriding the systemd we built from source with the distro packaged systemd if it's pulled in as a dependency by another package from the initrd or final profiles. 2. The "initrd" preset. This image provides the initrd. It's trivial and does nothing more than packaging the base image up as a zstd compressed initramfs and adds /init and /etc/initrd-release symlinks to the image. 3. The "final" preset. This image builds on top of the base image and adds a kernel and extra packages that are useful for testing and debugging. We also split out the optional kernel build into a separate set of config files that are only included if a kernel to build is actually provided. Note that this commit doesn't really change anything about how mkosi is used. The commands remain the same, except that mkosi will now build all the presets in order. "mkosi summary" will show the summary of all the presets. "mkosi qemu, boot, shell" will always boot the final preset. With "-f", all presets will be built and the final one is booted. "-i" makes a cache of each preset. The only thing to keep in mind is that specifying config via the mkosi CLI will apply to each of the presets. e.g. any extra packages added with "-p" will be installed in both the initrd and the final image. To apply local configuration to a single preset, create a file 00-local.conf in mkosi.presets/<profile>/mkosi.conf.d and put all the preset specific configuration in there.
2023-04-25 17:04:49 +03:00
# SPDX-License-Identifier: LGPL-2.1-or-later
[Output]
Format=cpio
# TODO: Switch to zstd once we stop building CentOS Stream 8.
CompressOutput=xz
[Content]
BaseTrees=mkosi.output/base
MakeInitrd=yes
# Arch Linux doesn't split their gcc-libs package so we manually remove unneeded stuff here to make sure it
# doesn't end up in the initrd.
RemoveFiles=
/usr/lib/libgfortran.so*
/usr/lib/libgo.so*
/usr/lib/libgomp.so*
/usr/lib/libgphobos.so*
/usr/lib/libobjc.so*
/usr/lib/libstdc++.so*
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