Recent qemu version will warn with our current code:
qemu-system-x86_64: -accel kvm:hvf:tcg: Don't use ':' with -accel,
use -M accel=... for now instead
Since this might result in hard-errors, lets just follow the advice and
use the `-M` switch.
We now support sources and pipelines being passed to osbuild as one.
This will make the transformation from dnf to rpm stage simpler, as
the source object will then be different for each stage, so having
a shared one as now would be cumbersome.
Signed-off-by: Tom Gundersen <teg@jklm.no>
Pipelines encode which source content they need in the form of
repository metadata checksums (or rpm checksums). In addition, they
encode where they fetch that source content from in the form of URLs.
This is overly specific and doesn't have to be in the pipeline's hash:
the checksum is enough to specify an image.
In practice, this precluded using alternative ways of getting at source
packages, such as local mirrors, which could speed up development.
Introduce a new osbuild API: sources. With it, a stage can query for a
way to fetch source content based on checksums.
The first such source is `org.osbuild.dnf`, which returns repository
configuration for a metadata checksum. Note that the dnf stage continues
to verify that the content it received matches the checksum it expects.
Sources are implemented as programs, living in a `sources` directory.
They are run on the host (i.e., uncontained) right now. Each source gets
passed options, which are taken from a new command line argument to
osbuild, and an array of checksums for which to return content.
This API is only available to stages right now.
The stage testing is based on an output from the tree-diff tool. During
one test two pipelines are run and their outputs are compared using
tree-diff. The diff is then compared with expected diff included in
the repository.
Use the unittest module from the standard library. Also, ensure that
separate runs of this test don't share a osbuild store and clean up
after themselves.
With contributions from Ondřej Budai and Tom Gundersen.
