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2013-06-13errors: rewrite the logic how errors are reportedTimo Teräs12-20/+74
Instead of the dependency oriented logic, switch to print them for each package or name needed. Might give a bit more readable errors now. There's still few corner cases that proper error is not output, which are cought by the test cases.
2013-06-13solver: prune broken world dependencies with --forceTimo Teräs3-0/+23
mostly useful for reboot, when all packages are not available.
2013-06-13solver: rewrite as deductive solver -- pinning supportTimo Teräs16-24/+70
Fix also pinning test cases to be more sane.
2013-06-13solver: rewrite as deductive solver -- per name flagsTimo Teräs6-0/+55
Handle properly per-name preference flags, and add test cases for testing those via fix applet.
2013-06-13solver: rewrite as deductive solver -- core featuresTimo Teräs8-8/+8
Implementing basic dependency handling, install_if and awareness of pinning.
2013-05-30db: unify handling of special packagesTimo Teräs2-0/+14
make cache a special kind of repository, and automatically cache special packages (virtual packages, or ones installed from command line). add test cases for handling virtual packages. fixes #1617.
2012-10-09test: fix conflict2 expectation after solver changesTimo Teräs1-1/+1
The 'a' package is now more preferred which actually makes more sense.
2012-02-29solver, test: make conflicts unconditionalTimo Teräs1-1/+1
Solver will now never report partial solution where a conflict constraint is not satisfied. The is because with --force we might install the partial solution; and if conflicted packages were to be installed we might have extra trouble.
2012-02-28solver: consider provided names also for preferenceTimo Teräs1-0/+6
ref #574
2012-02-28solver: allow multiple packages with same virtual providesTimo Teräs2-5/+5
ref #574
2012-02-27solver, test: implements more provides things, add testsTimo Teräs5-0/+71
ref #574
2012-02-24solver: unallowed pinning is worse than changing installed packageTimo Teräs1-0/+10
2012-02-24test: clean up solver.shTimo Teräs1-5/+9
* take list of tests to run (and default to all) * merge the awk invocation to a function
2012-02-24solver: non preferred actions are worse then non preferred pinningTimo Teräs3-0/+39
Otherwise we might start to change packages unexpectedly when not upgrading. This also fixes some other things the solver might've decided to do. Add also few test cases to detect bad behaviour.
2012-02-24pkg, db: use 's' for source repository tags instead of 'p'Timo Teräs1-2/+2
Will use 'p' for provides.
2012-02-24test: improve pinning testsTimo Teräs9-4/+77
2012-02-23test: rewrite the testing framework to use the real appletsTimo Teräs52-115/+208
also merge the expected output to the *.test files.
2012-01-20solver: fix regression from "calculate branch minimum penalty early"Timo Teräs1-2/+1
Forgot to reset per-name penalty when it got locked by apply_decision. This also fine tunes compare_package_preference() to always prefer packages specified on command line speeding up calculation certain complicated solutions.
2012-01-17solver: calculate branch minimum penalty earlyTimo Teräs1-1/+2
Previously we would cache the penalty when evaluating the final solution, and adding that until we backtrack to first topology position changing that penalty. However, we can just keep track of minimum penalty based on name state, and add it. This allows us to bail out early on bad branches because we know in advance how things will turn out.
2011-10-29solver, db: implement repository pinningTimo Teräs9-0/+37
Improves /etc/apk/repositories format so you can say: http://nl.alpinelinux.org/alpine/v2.3/main @edge http://nl.alpinelinux.org/alpine/edge/main @testing http://nl.alpinelinux.org/alpine/edge/testing After which you can pin dependencies to these tags using: apk add stableapp newapp@edge bleedingapp@testing Apk will now by default only use the untagged repositories, but adding a tag to specific dependency: 1. will prefer that tag for the name 2. allowing pulling in dependencies from that tag (though, it prefers untagged packages to satisfy deps if possible) fixes #575
2011-10-24solver, pkg: implement versioned conflictsTimo Teräs3-0/+23
One can now say in dependency "!foo<2" which means, that if foo is installed, it needs to be >=2, but it's not a required dependency.
2011-10-14solver: preference scoringTimo Teräs4-9/+7
Should now choose packages better if the best available version is uninstallable for some reason.
2011-09-05solver: report 'complete' solutions with errorsTimo Teräs4-10/+4
Allow to select packages that conflict in case we are looking for errors. This allows 'add --force' to install (on boot) the set of packages with minimum conflicts.
2011-08-18solver: reintroduce install_if supportTimo Teräs14-12/+80
* each package name has two sorting positions, one which causes install_if triggers to be run, and other for bulk dependencies * fix also inverted ordering of package installations
2011-08-01solver: generate proper error messagesTimo Teräs22-13/+56
* the solver no longer does look-ahead locking of names (could be possibly optimized later); instead names are now always ordered strictly to properly detect the package names which are unsolveable * basic error tests added, so we can see the most likely problem in dependencies easily
2011-07-27solver: don't consider package that we can't haveTimo Teräs2-0/+1
Packages that need (re-)installation but which are not available, are excluded now properly.
2011-07-27solver: permutate each preferred solution firstTimo Teräs5-0/+17
The first found solution is the most preferred one then.
2011-07-26solver: new package selection logic (which is not yet used)Timo Teräs23-5/+155
* basic code for a backtracking, forward checking dependency satisfier * works better when there are tricky dependencies to solve (when can't just upgrade everything to most preferred versions) * the new code always evaluates all of 'world' constraints (old code just does incremental updates based on heuristics) * is probably somewhat slower than old code (probably unnoticeable difference in most cases) * makes easier to write support for provides and repository pinning * test applet and a bunch of test cases added which uses the new code * from the old feature set install_if is not yet implemented
2010-06-15test: check if upgrade works when package is missing in repoNatanael Copa1-0/+7
2010-06-15test: dont run sh manually but respect #!/bin/sh in each testNatanael Copa9-10/+13
That way we can set sh options case by case
2010-06-15test: initial testsuiteNatanael Copa17-0/+422
2009-11-06test: add test cases for version comparingTimo Teras2-0/+741
so i don't get to break version compares again.
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