On 2024-04-07 04:48 +0300, Cyprus Socialite wrote:
I am trying to configure Apt to follow a "stable where we can, unstable
where we must" logic.
On the "Stable+Backports - Testing - Unstable - Experimental" stencil, I would like to
- install left-to-right (the stablest version available),
- upgrade right-to-left (the stablest newer version available, but never
less stable than the one currently installed).
I have already achieved the desired Install behaviour with Pin-Priorities, but upgrade is more challenging.
For example, if I have foo=2 installed from testing, and the newer versions available are foo=3 in stable and foo=4 in testing, apt seems to go for testing, whereas I would prefer the stabler though not-so-much-newer
version by default.
This would be rather strange and does not match my experience. Can you
please show the output of "apt policy"?
Furthermore, I would like to keep the aforementioned stencil fixed on my current release until and unless I'm ready for an upgrade.
I imagine this can be achieved by sticking explicit names (e.g. bookworm/trixie in place of stable/testing) everywhere, but maybe there is
a nicer, DRY-compliant method? Perhaps, something involving APT::Default-Release or similar, though I will admit I have no clue how
this setting actually works...
Using the codename (i.e. bookworm/trixie) is the way to go. When
upgrading to a newer release you need to adjust the pinning preferences
along with the apt sources, but this only needs to be done every two
years.
Cheers,
Sven
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