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Build-Pipelines for Operating System Artifacts

Release of osbuild-composer 9

We are happy to announce version 9 of osbuild-composer, again one of our regular biweekly releases.

The most visible changes are that we’re building up-to-date Fedora images now by including the updates repositories and that we’re releasing into Fedora 32 and 33 under a new—less confusing—package name: osbuild-composer.

Below you can find the official change log, compiled by Ondřej Budai. Everyone is encouraged to upgrade!


  • Fedora is now build with updates and modules repositories enabled, therefore up-to-date images are now produced.

  • A new man-page osbuild-composer(7) with high-level description of the project is now available. It can be built by the new man target in the Makfile.

  • All Fedora images have now a generic initramfs. This should make the images more reproducible and less likely failing to boot if the image build was done in a less usual environment.

  • Metalink is now used to access the Fedora repositories. This change should hopefully lead to more stable builds.

  • Composer is now released to Fedora 32 and 33 in a new osbuild-composer package. The old golang-github-osbuild-composer package will be automatically upgraded to the new one.

  • The internal osbuild-pipeline command now has a more user-friendly interface.

  • The RCM API (in development, experimental) is reworked to allow any distribution-architecture-image type combination.

  • The work on a high-level description of image types began. See image-types directory.

  • The osbuild-worker arguments are reworked, they are now much more flexible.

  • The image-info tool used in the integration tests can be now run on Fedora 32.

  • The unit test coverage is now much bigger, thanks to all contributors!

  • Internal distribution representation is significantly reworked, this simplifies the process of adding the support for all currently missing architectures.

  • Integration tests were also improved, the image tests are fully switched to the new Go implementation and an automatic way of generating test cases is added. The weldr API coverage is also much better. Several bugs in it were fixed in the process.

  • is now used to monitor the test coverage of the code.

  • As always, minor fixes and improvements all over the place.

Contributions from: Alexander Todorov, Brian C. Lane, David Rheinsberg, Jacob Kozol, Jakub Rusz, Jiri Kortus, Lars Karlitski, Martin Sehnoutka, Ondřej Budai, Tom Gundersen

– Liberec, 2020-04-01

Written by Lars Karlitski, on April 1, 2020.