cweagans/composer-patches

How cweagans/composer-patches works

Composer Patches is a Composer plugin that resolves patch definitions, downloads and caches patch files, then applies them to installed dependencies. Its plugin class coordinates those stages and exposes commands, lock handling, and extension events. The graph includes the documented local/remote patch capability and the sampled provider, resolver, downloader, and patcher layers. Some subsystem wiring is supported by the SOURCE INDEX rather than inspected implementation; uncertain event and command relationships are omitted.

Main entry points: Patches.php Patches plugin · Patcher.php Patcher coordinator · CommandProvider.php Command provider · Resolver.php Resolver coordinator

Components 26

Plugin lifecycle

Patches plugin src/Plugin/Patches.php
Plugin events src/Event/PluginEvent.php
Patch events src/Event/PatchEvent.php

Patch definitions

Patch model src/Patch.php
Patch collection src/PatchCollection.php
Resolver coordinator src/Resolver.php
Resolver providers src/Capability/Resolver/ResolverProvider.php
Built-in resolvers src/Resolver
Resolver base src/Resolver/ResolverBase.php
Patch lock state src/Locker.php

Download and apply

Download coordinator src/Downloader.php
Downloader providers src/Capability/Downloader/DownloaderProvider.php
HTTP downloader src/Downloader/ComposerDownloader.php
Downloader contract src/Downloader/DownloaderInterface.php
Patcher coordinator src/Patcher.php
Patcher providers src/Capability/Patcher/PatcherProvider.php
Built-in patchers src/Patcher
Patcher contract src/Patcher/PatcherInterface.php

Commands and state

Command provider src/Capability/CommandProvider.php
Environment doctor src/Command/DoctorCommand.php
Patch commands src/Command/PatchesCommandBase.php
Relock command src/Command/RelockCommand.php
Repatch command src/Command/RepatchCommand.php

Other components

Composer
Local or remote patch
Installed dependencies

Connections 29

Composer → Patches plugin: invokes plugin
Patches plugin → Resolver coordinator: loads definitions src/Plugin/Patches.php
Resolver coordinator → Resolver providers: discovers providers src/Resolver.php
Resolver providers → Built-in resolvers: provides resolvers src/Capability/Resolver/ResolverProvider.php
Built-in resolvers → Resolver base: shares base src/Resolver/Dependencies.php
Resolver coordinator → Patch collection: returns collection src/Resolver.php
Resolver base → Patch model: creates patches src/Resolver/ResolverBase.php
Patches plugin → Patch collection: iterates patches src/Plugin/Patches.php
Patches plugin → Download coordinator: downloads patches src/Plugin/Patches.php
Download coordinator → Downloader providers: discovers providers src/Downloader.php
Downloader providers → HTTP downloader: provides downloader
Download coordinator → Downloader contract: validates implementations src/Downloader.php
HTTP downloader → Local or remote patch: fetches and hashes src/Downloader/ComposerDownloader.php
Patches plugin → Patcher coordinator: applies patches src/Plugin/Patches.php
Patcher coordinator → Patcher providers: discovers providers src/Patcher.php
Patcher providers → Built-in patchers: provides patchers src/Capability/Patcher/PatcherProvider.php
Patcher coordinator → Patcher contract: validates implementations src/Patcher.php
Patcher coordinator → Installed dependencies: applies to path src/Patcher.php
Patches plugin → Patch lock state: uses lock state src/Plugin/Patches.php
Patches plugin → Command provider: registers commands src/Plugin/Patches.php
Command provider → Environment doctor: provides command src/Capability/CommandProvider.php
Command provider → Relock command: provides command src/Capability/CommandProvider.php
Command provider → Repatch command: provides command src/Capability/CommandProvider.php
Environment doctor → Patcher providers: checks patchers src/Command/DoctorCommand.php
Relock command → Patch commands: extends commands src/Command/RelockCommand.php
Repatch command → Patch commands: extends commands src/Command/RepatchCommand.php
Patch commands → Patches plugin: accesses plugin src/Command/PatchesCommandBase.php
Patches plugin → Plugin events: dispatches discovery events
Patches plugin → Patch events: dispatches patch events src/Plugin/Patches.php

Drawn by GitDiagram on November 10, 2026 from the repository's file tree, README and source files. Read as Markdown ·