apt/apt-pkg/edsp.cc, branch 1.2.5

pass versioned provides to external solvers in EDSP

2016-02-16T10:42:29Z

The EDSP output generated by apt didn't include the versioned provides information so that every provides looked like an unversioned one in the eyes of an external resolver.

sanify API to get 'the' candidate version

2015-11-04T17:04:05Z

This was discussed a while ago on #debian-apt and now that I see myself making this mistake lets bite the bullet and fix it in the easy way out version: Using a new name which fits with a similar named setter and deprecate the old method instead of 'hostily' changing API. Closes: #803471

do not discard new manual-bits while applying EDSP solutions

2015-09-14T13:22:18Z

In private-install.cc we call MarkInstall with FromUser=true, which sets the bit accordingly, but while applying the EDSP solution we call mark install on all packages with FromUser=false, so MarkInstall believes this install is an automatic one and sets it to auto – so that a new package which is explicitely installed via an external solver is marked as auto and is hence also up for garbage collection in a following call. Ideally MarkInstall wouldn't reset it, but the detection is hard to do without regressing in other cases – and ideally ideally MarkInstall wouldn't deal with the autobit at all – so we work around this on the calling side for now.

add Source-Version field for EDSP

2015-09-14T13:22:18Z

The syntax of "Source" is different in EDSP compared to the the field of the same name in 'the rest' of Debian, so documented this accordingly and send the version as a new field.

implement dpkgs vision of interpreting pkg: dependencies

2015-09-14T13:22:18Z

How the Multi-Arch field and pkg: dependencies interact was discussed at DebConf15 in the "MultiArch BoF". dpkg and apt (among other tools like dose) had a different interpretation in certain scenarios which we resolved by agreeing on dpkg view – and this commit realizes this agreement in code. As was the case so far libapt sticks to the idea of trying to hide MultiArch as much as possible from individual frontends and instead translates it to good old SingleArch. There are certainly situations which can be improved in frontends if they know that MultiArch is upon them, but these are improvements – not necessary changes needed to unbreak a frontend. The implementation idea is simple: If we parse a dependency on foo:amd64 the dependency is formed on a package 'foo:amd64' of arch 'any'. This package is provided by package 'foo' of arch 'amd64', but not by 'foo' of arch 'i386'. Both of those foo packages provide each other through (assuming foo is M-A:foreign) to allow a dependency on 'foo' to be satisfied by either foo of amd64 or i386. Packages can also declare to provide 'foo:amd64' which is translated to providing 'foo:amd64:any' as well. This indirection over provides was chosen as the alternative would be to teach dependency resolvers how to deal with architecture specific dependencies – which violates the design idea of avoiding resolver changes, especially as architecture-specific dependencies are a cornercase with quite a few subtil rules. Handling it all over versioned provides as we already did for M-A in general seems much simpler as it just works for them. This switch to :any has actually a "surprising" benefit as well: Even frontends showing a package name via .Name() [which doesn't show the architecture] will display the "architecture" for dependencies in which it was explicitely requested, while we will not show the 'strange' :any arch in FullName(true) [= pretty-print] either. Before you had to specialcase these and by default you wouldn't get these details shown. The only identifiable disadvantage is that this complicates error reporting and handling. apt-get's ShowBroken has existing problems with virtual packages [it just shows the name without any reason], so that has to be worked on eventually. The other case is that detecting if a package is completely unknown or if it was at least referenced somewhere needs to acount for this "split" – not that it makes a practical difference which error is shown… but its one of the improvements possible.

Fix all the wrong removals of includes that iwyu got wrong

2015-08-17T12:29:02Z

Git-Dch: ignore

Cleanup includes after running iwyu

2015-08-17T10:01:45Z

hide implicit deps in apt-cache again by default

2015-08-10T15:27:58Z

Before MultiArch implicits weren't a thing, so they were hidden by default by definition. Adding them for MultiArch solved many problems, but having no reliable way of detecting which dependency (and provides) is implicit or not causes problems everytime we want to output dependencies without confusing our observers with unneeded implementation details. The really notworthy point here is actually that we keep now a better record of how a dependency came to be so that we can later reason about it more easily, but that is hidden so deep down in the library internals that change is more the problems it solves than the change itself.

remove the compatibility markers for 4.13 abi

2015-08-10T15:27:58Z

We aren't and we will not be really compatible again with the previous stable abi, so lets drop these markers (which never made it into a released version) for good as they have outlived their intend already. Git-Dch: Ignore

add d-pointer, virtual destructors and de-inline de/constructors

2015-06-16T14:22:46Z

To have a chance to keep the ABI for a while we need all three to team up. One of them missing and we might loose, so ensuring that they are available is a very tedious but needed task once in a while. Git-Dch: Ignore