apt, branch 3.1.0

Release 3.1.0

2025-05-19T17:14:52Z

Merge branch 'cherry' into 'main'

2025-05-19T17:11:15Z

Various cherry-picks See merge request apt-team/apt!480

Fail on stdio errors

2025-05-19T17:06:31Z

If there is an error writing to cout, cerr, or clog, APT should return a non-zero exit code. This allows automated tools to reliably check for warnings.

Ubuntu: Enable 3.0 solver by default in apt CLI tools

2025-05-19T17:06:31Z

Update our vendor config to enable the 3.0 solver by default, using the legacy compat mode for apt-get, where it is allowed to remove manually installed packages.

Include everything in our pkg-config autopkgtest

2025-05-19T17:06:31Z

GCC defaults to C++17 currently, but our library users could be on other (newer/older) standard still e.g. by explicit request, so to avoid accidentally breaking them the pkg-config-test is adapted to include all of our public headers as a smoke test for if you can build an application against our library in a certain C++ standard. The test script is also adapted to be runnable outside of autopkgtest like in our CI or manually.

Merge branch 'patch-1' into 'main'

2025-05-19T16:59:42Z

💬 Recommend people use `apt update` over `apt-get update` See merge request apt-team/apt!80

💬 Recommend use of `apt update` over `apt-get update`

2025-05-19T16:29:45Z

Update translation templates and merge translations

2025-05-19T16:29:05Z

Merge branch 'sources-precedence' into 'main'

2025-05-19T16:07:43Z

sources.list(5): Explicitly say what the precedence order is See merge request apt-team/apt!417

sources.list(5): Explicitly say what the precedence order is

2025-05-19T16:07:34Z

The order of apt sources can matter, but this man page did not previously define whether /etc/apt/sources.list was parsed before or after the fragment files in sources.list.d. Giving a concrete example also provides a hint that numeric prefixes are a useful way to force a particular sort order, and clarifies that the .list or .sources extension is less important than lexicographic order. Signed-off-by: Simon McVittie