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rpm::Transaction: Enable installonly pkg downgrade #723

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merged 1 commit into from
Jul 18, 2023

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@m-blaha m-blaha commented Jul 14, 2023

To correctly filter out the
"package kernel-x (which is newer than kernel-y) is already installed"
RPM transaction problem, we need to determine whether a downgrade
operation is present in the transaction.

The current implementation relies on the presence of a "downgrade"
operation in the solver results. However, for install-only packages,
there is no "downgrade" operation; only an "install" operation.

This patch introduces detection to identify if an install-only package
of an older version is present in the transaction. It then sets ignored
problems in the RPM transaction accordingly.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2221308
Resolves: #720

Tests: rpm-software-management/ci-dnf-stack#1337

To correctly filter out the
"package kernel-x (which is newer than kernel-y) is already installed"
RPM transaction problem, we need to determine whether a downgrade
operation is present in the transaction.

The current implementation relies on the presence of a "downgrade"
operation in the solver results. However, for install-only packages,
there is no "downgrade" operation; only an "install" operation.

This patch introduces detection to identify if an install-only package
of an older version is present in the transaction. It then sets ignored
problems in the RPM transaction accordingly.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2221308
Resolves: #720
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@Conan-Kudo Conan-Kudo left a comment

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Seems reasonable to me.

@kontura kontura added this pull request to the merge queue Jul 18, 2023
Merged via the queue into main with commit 38e8dde Jul 18, 2023
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@kontura kontura deleted the mblaha/kernel-downgrade branch July 18, 2023 06:30
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dnf5 will not install an older kernel
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