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composer-patches

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Simple patches plugin for Composer. Applies a patch from a local or remote file to any package required with composer.

Support notes

  • If you need PHP 5.3, 5.4, or 5.5 support, you should probably use a 1.x release.
  • 1.x is mostly unsupported, but bugfixes and security fixes will still be accepted. 1.7.0 will be the last minor release in the 1.x series.
  • Beginning in 2.x, the automated tests will not allow us to use language features that will cause syntax errors in PHP 5.6 and later. The unit/acceptance tests do not run on anything earlier than PHP 7.1, so while pull requests will be accepted for those versions, support is on a best-effort basis.

Usage

Example composer.json:

{
  "require": {
    "cweagans/composer-patches": "~1.0",
    "drupal/core-recommended": "^8.8",
  },
  "config": {
    "preferred-install": "source"
  },
  "extra": {
    "patches": {
      "drupal/core": {
        "Add startup configuration for PHP server": "https://www.drupal.org/files/issues/add_a_startup-1543858-30.patch"
      }
    }
  }
}

Using an external patch file

Instead of a patches key in your root composer.json, use a patches-file key.

{
  "require": {
    "cweagans/composer-patches": "~1.0",
    "drupal/core-recommended": "^8.8",
  },
  "config": {
    "preferred-install": "source"
  },
  "extra": {
    "patches-file": "local/path/to/your/composer.patches.json"
  }
}

Then your composer.patches.json should look like this:

{
  "patches": {
    "vendor/project": {
      "Patch title": "http://example.com/url/to/patch.patch"
    }
  }
}

Allowing patches to be applied from dependencies

If you want your project to accept patches from dependencies, you must have the following in your composer file:

{
  "require": {
      "cweagans/composer-patches": "^1.5.0"
  },
  "extra": {
      "enable-patching": true
  }
}

Ignoring patches

There may be situations in which you want to ignore a patch supplied by a dependency. For example:

  • You use a different more recent version of a dependency, and now a patch isn't applying.
  • You have a more up to date patch than the dependency, and want to use yours instead of theirs.
  • A dependency's patch adds a feature to a project that you don't need.
  • Your patches conflict with a dependency's patches.
{
  "require": {
    "cweagans/composer-patches": "~1.0",
    "drupal/core-recommended": "^8.8",
    "drupal/lightning": "~8.1"
  },
  "config": {
    "preferred-install": "source"
  },
  "extra": {
    "patches": {
      "drupal/core": {
        "Add startup configuration for PHP server": "https://www.drupal.org/files/issues/add_a_startup-1543858-30.patch"
      }
    },
    "patches-ignore": {
      "drupal/lightning": {
        "drupal/panelizer": {
          "This patch has known conflicts with our Quick Edit integration": "https://www.drupal.org/files/issues/2664682-49.patch"
        }
      }
    }
  }
}

Using patches from HTTP URLs

Composer blocks you from downloading anything from HTTP URLs, you can disable this for your project by adding a secure-http setting in the config section of your composer.json. Note that the config section should be under the root of your composer.json.

{
  "config": {
    "secure-http": false
  }
}

However, it's always advised to setup HTTPS to prevent MITM code injection.

Patches containing modifications to composer.json files

Because patching occurs after Composer calculates dependencies and installs packages, changes to an underlying dependency's composer.json file introduced in a patch will have no effect on installed packages.

If you need to modify a dependency's composer.json or its underlying dependencies, you cannot use this plugin. Instead, you must do one of the following:

  • Work to get the underlying issue resolved in the upstream package.
  • Fork the package and specify your fork as the package repository in your root composer.json
  • Specify compatible package version requirements in your root composer.json

Error handling

If a patch cannot be applied (hunk failed, different line endings, etc.) a message will be shown and the patch will be skipped.

To enforce throwing an error and stopping package installation/update immediately, you have two available options:

  1. Add "composer-exit-on-patch-failure": true option to the extra section of your composer.json file.
  2. Export COMPOSER_EXIT_ON_PATCH_FAILURE=1

By default, failed patches are skipped.

Difference between this and netresearch/composer-patches-plugin

  • This plugin is much more simple to use and maintain
  • This plugin doesn't require you to specify which package version you're patching
  • This plugin is easy to use with Drupal modules (which don't use semantic versioning).
  • This plugin will gather patches from all dependencies and apply them as if they were in the root composer.json

Contributing

  1. composer install
  2. vendor/bin/grumphp run
  3. vendor/bin/codecept run unit
  4. <write code>
  5. vendor/bin/grumphp run
  6. vendor/bin/codecept run unit
  7. <commit code>
  8. <create pull request>

Credits

A ton of this code is adapted or taken straight from https://github.com/jpstacey/composer-patcher, which is abandoned in favor of https://github.com/netresearch/composer-patches-plugin, which is (IMHO) overly complex and difficult to use.

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Simple patches plugin for Composer

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