- /* Now, auto upgrade all essential packages - this ensures that
- the essential packages are present and working */
- for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
- if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
- Cache.MarkInstall(I, true, 0, false);
+ /* Now, install each essential package which is not installed
+ (and not provided by another package in the same name group) */
+ std::string essential = _config->Find("pkgCacheGen::Essential", "all");
+ if (essential == "all")
+ {
+ for (pkgCache::GrpIterator G = Cache.GrpBegin(); G.end() == false; ++G)
+ {
+ bool isEssential = false;
+ bool instEssential = false;
+ for (pkgCache::PkgIterator P = G.PackageList(); P.end() == false; P = G.NextPkg(P))
+ {
+ if ((P->Flags & pkgCache::Flag::Essential) != pkgCache::Flag::Essential)
+ continue;
+ isEssential = true;
+ if (Cache[P].Install() == true)
+ {
+ instEssential = true;
+ break;
+ }
+ }
+ if (isEssential == false || instEssential == true)
+ continue;
+ pkgCache::PkgIterator P = G.FindPreferredPkg();
+ Cache.MarkInstall(P, true, 0, false);
+ }
+ }
+ else if (essential != "none")
+ for (pkgCache::PkgIterator I = Cache.PkgBegin(); I.end() == false; ++I)
+ if ((I->Flags & pkgCache::Flag::Essential) == pkgCache::Flag::Essential)
+ Cache.MarkInstall(I, true, 0, false);