The architecture of the new solver in pkg


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The architecture of the new solver in pkg
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Stakhov, Vsevolod
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Berkeley System Distribution (BSD), Andrea Ross
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Ottawa, Canada

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In the context of package management, the solver is an algorithm (or set of algorithms) to resolve dependencies and conflicts. The solver must handle options, upgrades, multiple repos, locally installed software, as well as other factors. The upcoming 1.3 release of pkg will have the new solver that has some important consequences. This talk is dedicated to the design concepts of the new solver in pkg management system (pkg-ng initially). In this talk, I describe the basic architecture of the solver, ideas used and the consequences of using this algorithm. Moreover, this talk describes the proposed pkg and ports architecture to simplify binary packages and ports using for all FreeBSD users. The proposed talk is oriented to the wide auditory of FreeBSD users and describes the architectural design of pkg and ports that is going to be implemented. I concentrate on the following topics: the interaction of ports and packages how pkg may be used for ports management what are the alternatives used by other packages management systems (yum/apt/zypper/MacPorts) the basic description of the SAT problem and how this algorithm can be applied to packages management multiple repos handling the improved support of custom options advanced conflicts and dependencies fine-grained packages distribution base system interaction the speed estimations This talk is intended to improve the understanding of pkg internals and the future plans of FreeBSD packages and ports development.
Building Installation art Computer file Ferry Corsten Code Set (mathematics) Multiplication sign Disintegration Binary code Parsing Rule of inference Thermodynamic system Summation Computer configuration Term (mathematics) Operator (mathematics) Single-precision floating-point format Software Repository (publishing) Data storage device Information security Identity management Task (computing) Operations research Thermodynamic system View (database) Building Magneto-optical drive Model theory Set (mathematics) Electronic signature Process (computing) Computer animation Uniform resource name Key (cryptography) Information security Central processing unit Identity management Task (computing) Local ring Resultant Separation axiom
Axiom of choice Musical ensemble Installation art INTEGRAL Multiplication sign File format Mereology Subset Explosion Summation Programmer (hardware) Order (biology) Roundness (object) Mathematics Video game Library (computing) Identity management Thermodynamic system Process (computing) Structural load Computer file Interior (topology) Open set Arithmetic mean Process (computing) Exterior algebra Heegaard splitting System programming Information security Task (computing) Resultant Row (database) Wide area network Web page Point (geometry) Computer programming Enterprise architecture Presentation of a group Computer file Set (mathematics) Electronic mailing list Login Code Number Revision control Arithmetic mean Database Energy level Scripting language Medizinische Informatik Reverse engineering Units of measurement Task (computing) Salem, Illinois Rule of inference Multiplication Magneto-optical drive Model theory Planning Independence (probability theory) Denial-of-service attack Set (mathematics) Euler angles Limit (category theory) Computer file Computer animation Personal digital assistant Universe (mathematics) Revision control Game theory Separation axiom
Musical ensemble Installation art Multiplication sign File format Food energy Summation Programmer (hardware) Mathematics Logic Universe (mathematics) Library (computing) Satellite Product (category theory) Thermodynamic system Closed set Interior (topology) Term (mathematics) Process (computing) Computer configuration Data conversion Quicksort Information security Data structure Reading (process) Point (geometry) Computer programming Braid Presentation of a group Algorithm Number Revision control Writing Chain Term (mathematics) Subtraction Units of measurement Physical law Expression Independence (probability theory) Core dump Set (mathematics) Transformation (genetics) System call Image resolution Voting Computer animation Universe (mathematics) Revision control Game theory Integer Identity management
Complex (psychology) Installation art Multiplication sign Direction (geometry) Range (statistics) File format Water vapor Insertion loss Programmer (hardware) Sign (mathematics) Virtual reality Video game Mathematics Linker (computing) Repository (publishing) Flag Universe (mathematics) Identity management Algorithm Satellite Thermodynamic system Moment (mathematics) Sampling (statistics) Sound effect Bit Maxima and minima Propagator Process (computing) Computer configuration Crash (computing) Computer science output Website Software testing Energy level Quicksort Whiteboard Resultant Point (geometry) Read-only memory Computer programming Freeware Braid Algorithm Simultaneous localization and mapping Smith chart Revision control Causality Directed set Medizinische Informatik Software testing Selectivity (electronic) Lie group Text editor Subtraction Units of measurement Stokes' theorem World Wide Web Consortium Rule of inference Expression Projective plane Independence (probability theory) Line (geometry) Web browser Local Group Perspective (visual) Single-precision floating-point format Word Computer animation Commitment scheme Personal digital assistant Function (mathematics) Revision control Units of measurement Identity management Local ring
Scaling (geometry) Computer animation Uniform resource name Common Intermediate Language Quicksort Average
Point (geometry) Mathematics Computer animation Hypermedia Thumbnail Quicksort Web syndication Reading (process) Local ring
Revision control Arithmetic mean Freeware Computer animation Multiplication sign Authorization Archaeological field survey Ordinary differential equation Mereology Smith chart Power (physics)
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