Currently autopkgtest tries to install our trigger from unstable and the rest
from testing. If that fails, than autopkgtest has a fall-back to allow all
packages from unstable to be installed. This has two severe issues:
1) the version of the test and the package it came from may be out-of-sync
2) too much from unstable may be installed, even stuff that should not/is not
allowed to migrate as it breaks stuff.
Make sure that test depends also get added to triggers if they are broken.
E.g. imagine the following scenario: trigger X changes (breaks) the output
generated by Y. Package Z has Y in the test dependencies and compares the
output in the autopkgtest. We want to have the opportunity that a new version
is automatically fixing the situation.
Two use cases are currently unsupported: needs-build (autopkgtest restriction)
and test dependencies generated by autodep8.
Cherry-Pick: 80bf9060de
Cherry-Pick: f32907acea
Cherry-Pick: 9ef496177f86b18d9f910da1360dd773b82f1fb7
Cherry-Pick: b16530a37d
Signed-off-by: Niels Thykier <niels@thykier.net>
Flatten the defaultdict(set) for unsat_deps into a standard dict for output
The "almost" comes from the fact that there is a reference to
"pu"/"stable" which does not have an obvious fix at the moment.
Signed-off-by: Niels Thykier <niels@thykier.net>
Into 3 categories:
* target suite ("testing")
* primary source suite ("unstable")
* additional source suites ("pu" and "tpu")
This will be useful for implementing logic working with suites without
basing it on the name of the suite.
Signed-off-by: Niels Thykier <niels@thykier.net>
At the moment, it is just a glorified dict. However, we will
eventually use it to get rid of the hardcoded references to "testing"
etc. all over the code.
Signed-off-by: Niels Thykier <niels@thykier.net>
- revert most of commit adbe6d5 as checking the version in testing doesn't work
when other packages migrate and cause regressions
- Alternative way of determining if a package is regressing, by comparison to a
reference set. The reference set is to be created by a holy trigger that
doesn't take packages from the base suite, but instead tests in the testing
suite. This reference needs a retry when a package causing regression
migrates nevertheless, e.g. due to hints or to bounty/penalty policy.
Add a new "BuildDependsPolicy" that will check the satisfiability of
the build-dependencies listed in the Build-Depends and
Build-Depends-Arch fields. This enables gating of packages based on
missing / broken build-dependencies.
There are some limitations:
* Build-Depends-Indep is ignored for now. Missing or broken packages
listed in Build-Depends-Indep will be continue to be silently
ignored.
* Being a policy check, it does not enforce "self-containedness" as
a package can still migrate before a build-dependency. However,
this can only happen if the build-dependency is ready to migrate
itself. If the build-dependency is not ready (e.g. new RC bugs),
then packages build-depending on it cannot migrate either (unless
the version in testing satisfies there requirements).
Signed-off-by: Niels Thykier <niels@thykier.net>
* test_autopkgtest: use --no-compute-migrations instead of removing UPGRADE_OUTPUT
* comment out some tests that I can't get to work in Debian, while all but three work if
run inside Ubuntu's britney
When I rewrote the compute_scc function into an iterative variant, I
almost included a bug that could make it come up with components that
were not strongly-connected.
Signed-off-by: Niels Thykier <niels@thykier.net>
Rewrite _compute_scc to be iterative to avoid call recursion limit for
graphs with long dependency chains.
Signed-off-by: Niels Thykier <niels@thykier.net>
Sometimes the solver would correctly compute which items are grouped
together, but then fail to emit some groups. This is trivially
fixable by forcing an update of "before" + "after" relations.
Admittedly, this looks unnecessary, so it may just be hiding the bug.
Nonetheless, the change makes the new test_solver_simple_scc test
produce the expected result.
Signed-off-by: Niels Thykier <niels@thykier.net>
Britney has a special case for essential packages to ensure that any
package that with essential packages are not installable. This check
did not account for a case, where a package is not co-installable with
two or more pseudo-essential package part of the same OR dependency.
A contrived example based on real world data:
Package: foo
# Conflict with all providers of "awk"
Conflicts: mawk | gawk | original-awk
This alone is actually not sufficient to trigger the bug, as
_get_min_pseudo_ess_set is in theory some times smart enough to pick
an "obvious" solution between the pseudo-essential option.
When it does, one of the above ends up in the (de-facto) essential set
and then the installability tester correctly rejects "foo".
Though, even with the fix above, the handling for this is probably not
correct if the essential set is not (fully co-)installable. However,
that basically only happens if we are bootstrapping an architecture
(or testing is royally broken, in which case this is the least of our
worries).
Signed-off-by: Niels Thykier <niels@thykier.net>
Paul Gevers
Niels Thykier
Mathieu Trudel-Lapierre