apt/apt-pkg/deb, branch 1.3_rc2

add --with-source option and Packages/Sources support

2016-08-17T12:12:25Z

We support "./foobar.deb" as a way to install a deb file directly. Recently .changes files were added. This highlights a problem as you can't add the changes file without also trying to install all of them. Now, it could also be handy to add entire Packages/Sources files to perhaps get a bunch of packages in without installing them all implicitly. This commit introduces --with-source which allows to add *.deb, *.changes, *.dsc, source-dirs, Packages & Sources files (the later can also be compressed) without also installing them.

default to Dir=/ in dpkg/status file finding magic

2016-08-17T05:55:46Z

Seen in cme #833656 if Dir isn't set (yet) we end up later absoluting a path which was supposed to be absolute already, so if Dir is empty we assume it to be '/' instead. In practice this is a bug in the software using libapt, but for maxium compatibility lets explicitly set the default value here to be safe. Reported-By: Paul Wise Inspired-By: Brendan O'Dea Fixes-Regression: 475f75506db48a7fa90711fce4ed129f6a14cc9a Shadows-Bug: #833656

disable explicit configuration of all packages at the end

2016-08-10T21:51:35Z

With b4450f1dd6bca537e60406b2383ab154a3e1485f we dropped what we calculated here later on and now that we don't need it in the meantime either we can just skip the busy work by default and expect dpkg to do the right thing dropping also our little "last explicit configures" removal trick introduced in b4450f1dd6bca537e60406b2383ab154a3e1485f. This enables the last of a bunch of previously experimental options, some of them existing still, but are very special and hence not really worth documenting anymore (especially as it would need to be rewritten now entirely) which is why the documentation is nearly completely dropped. The order of configuration stanzas in the simulation code changes slightly as it isn't concerning itself with finding the 'right' order, but any order is valid anyhow as long as the entire set happens in the same call.

simulate all package manager actions explicitly

2016-08-10T21:51:34Z

If a planner lets actions to be figured out by dpkg in pending calls these actions aren't mentioned in a simulation. While that might be a good thing for debugging, it would be a change in behavior and especially if a planner avoids explicit removals could be confusing for users. As such we perform the same 'trick' as in the dpkg implementation by performing explicitly what would be done by the pending calls. To save us some work and avoid desyncs we perform a layer violation by using deb/ code in the generic simulation – and further we perform ugly dynamic_cast to avoid breaking the ABI for nothing; aptitude is the only other user of the simulation class according to codesearch.d.n and for that our little trick works. It just isn't working if you happen to extend pkgSimulate or otherwise manage to call the protected Go methods directly – which isn't very realistic/practical.

try to avoid removal of crossgraded packages

2016-08-10T21:51:34Z

The user has to approve the removal of a crossgraded package as it might be needed to remove it (temporarily) in the process, but in most cases we can happily avoid it and let dpkg unpack over it skipping the remove. This has some effects on progress reporting and how deal with selections through which makes this a tiny bit complicated.

ensure all removes are reported to hook scripts

2016-08-10T21:18:04Z

Same reason and implementation as for configure.

ensure all configures are reported to hook scripts

2016-08-10T21:18:04Z

A planner might not explicitly configure all packages, but we need to know all packages which will be configured for progress reporting and to tell the hook scripts about them as they rely on this for their own functionality.

don't purge directly, but remove and do purge at the end

2016-08-10T21:18:04Z

If we want a package to be purged from the system tell dpkg in the ordering (if it has to touch it explicitly) to remove it and cover the purging of the config files at the end with a --purge --pending call. That should help packages move conffiles around between packages correctly even if the user is purging packages directly in big actions like dist-upgrades involving many packages.

call dpkg with --no-triggers by default

2016-08-10T21:18:04Z

Implemented a long while ago now with relatively good progress reporting involving triggers is a good time to try delaying the execution of triggers across dpkg invocations finally by default. Note: The bugreport talks also about 'smarter' configuration which is a much bigger part and approached from multiple directions, but doesn't really involve triggers per-se so considering it decoupled should help in getting it done… Closes: #626599

select remove/purge packages early on for dpkg

2016-08-10T21:18:04Z

Telling dpkg early on that we are going to remove these packages later helps it with auto-deconfiguration decisions and its another area where a planner can ignore the nitty gritty details and let dpkg decide the course of action if there are no special requirements.