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Re: [platform-dev] Getting the solution of a P2 resolve operation including missing requirements
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Christoph,
The approach that we took with using p2 to implement Targlet support is
to transform all the metadata such that resolution meets our needs:
https://git.eclipse.org/c/oomph/org.eclipse.oomph.git/tree/plugins/org.eclipse.oomph.p2.core/src/org/eclipse/oomph/p2/core/P2Util.java#n223
For the specific case you describe, making all the requirements optional
and greedy ensures that all requirements that can be resolved are
resolved but failures to resolve a requirement do not fail the overall
resolution.
This does not get you two sets of things though. You'd still need to
check afterwards if any non-optional requirement is unsatisfied to get
your second list. But that's iterating over all the resolved IU's
requirements and querying each against the other resolved IUs to collect
that list of unresolved requirements...
Regards,
Ed
On 30.12.2021 20:09, Christoph Läubrich wrote:
I'm currently investigate if it is already possible to get a result
from the Projector.invokeSolver call even if the result is not
resolvable.
What I want to archive is to resolve a state as if all missing
requirements are there (and just reported as such).
For example I have a bundle that is missing an import package, then I
get the error:
Software being installed: tycho.bundle 1.0.0.qualifier
Missing requirement: tycho.bundle 1.0.0.qualifier requires
'java.package; my.missing.package 0.0.0' but it could not be found
I now wanted to get two "sets":
1) all resolved items as if the package was not missing
2) all missing requirements (in this case the missing package)
What I could think of is to do this in an incremental way, eg. first
try to resolve, then get the missing items and create a new resolver
run with a dummy unit providing the missing item and thus keep track
of all these dummy items in a list.
I just wanted to make sure that I'm not missing an existing function
that already do this.
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