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* state: rework changeset calculation algorithmTimo Teras2009-04-141-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | Calculate changesets directly by stabilizating the package graph instead of recalculating the whole graph and then diffing (similar approach as seen in 'smart' package manager). The algorithm is not complete: defferred search space forking is missing. So you don't always get a solution on complex graphs. Benefits: - usually the search state tree is smaller (less memory used) - speed relational to changeset size, not database size (usually faster) - touch only packages related to users request (can work on partitially broken state; upgrades only necessary packages, fixes #7) Also implemented: - command prompt to confirm operation if packages are deleted or downgraded - requesting deletion of package suggests removal of all packages depending on the package being removed (you'll get list of packages that also get removed if you want package X removed) - option --simulate to see what would have been done (mainly for testing) - an untested implementation of versioned dependencies and conflicts A lot has changed, so expect new bugs too.
* version: avoid end up in endless loop if we compare 2 equal invalid versionsNatanael Copa2009-04-131-1/+1
| | | | fixes issue with apk version -t asdf asdf
* version: allow more digits come after letterNatanael Copa2009-04-131-1/+4
| | | | | This is so we can handle arpwatch-2.1a15 This makes us not 100% compatible with Gentoo
* version: allow token letter after digit_or_zeroNatanael Copa2009-04-131-1/+2
| | | | | Otherwise we only allow letters after first digit, i.e 2a, 2b but not 2.2a, 2.2b etc.
* version: allow only TOKEN_LETTER after a digitNatanael Copa2009-04-031-1/+1
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* Initial commit of some stuff written so far. Still in state of flux. ExpectTimo Teras2008-04-171-0/+165
breakage and major changes.