Drop composer 1.x support

reedy · reedy · commit 58125af2cba4 · 2023-04-15T20:31:24.000+01:00
diff --git a/.github/workflows/CI.yaml b/.github/workflows/CI.yaml
@@ -36,17 +36,6 @@ jobs:
         sudo apt-add-repository ppa:ondrej/php -y
         sudo apt-fast install -y --no-install-recommends php${{ matrix.php }}-ast
 
-    - name: Use Composer v1
-      run: composer require --dev --no-update composer/composer:^1.1
-
-    - name: Print Composer version
-      run: composer --version
-
-    - name: composer install
-      run: composer update --no-interaction --no-progress --ansi
-
-    - run: composer test
-
     - name: Use Composer v2
       run: composer require --dev --no-update composer/composer:^2.0
 
diff --git a/README.md b/README.md
@@ -28,6 +28,8 @@ Composer Merge Plugin 1.4.x (and older) requires Composer 1.x.
 
 Composer Merge Plugin 2.0.x (and newer) is compatible with both Composer 2.x and 1.x.
 
+Composer Merge Plugin 3.0.x (and newer) is requires Composer 2.x.
+
 ```
 $ composer require wikimedia/composer-merge-plugin
 ```
diff --git a/composer.json b/composer.json
@@ -13,7 +13,7 @@
     "prefer-stable": true,
     "require": {
         "php": ">=7.4.0",
-        "composer-plugin-api": "^1.1||^2.0"
+        "composer-plugin-api": "^2.0"
     },
     "require-dev": {
         "ext-json": "*",
diff --git a/src/ExtraPackage.php b/src/ExtraPackage.php
@@ -326,9 +326,7 @@ protected function mergeOrDefer(
             }
         }
 
-        if (!$state->isComposer1()) {
-            Intervals::clear();
-        }
+        Intervals::clear();
 
         return $origin;
     }
@@ -348,18 +346,14 @@ protected function mergeConstraints(Link $origin, Link $merge, PluginState $stat
         $oldPrettyString = $origin->getConstraint()->getPrettyString();
         $newPrettyString = $merge->getConstraint()->getPrettyString();
 
-        if ($state->isComposer1()) {
-            $constraintClass = MultiConstraint::class;
-        } else {
-            $constraintClass = \Composer\Semver\Constraint\MultiConstraint::class;
+        $constraintClass = \Composer\Semver\Constraint\MultiConstraint::class;
 
-            if (Intervals::isSubsetOf($origin->getConstraint(), $merge->getConstraint())) {
-                return $origin;
-            }
+        if (Intervals::isSubsetOf($origin->getConstraint(), $merge->getConstraint())) {
+            return $origin;
+        }
 
-            if (Intervals::isSubsetOf($merge->getConstraint(), $origin->getConstraint())) {
-                return $merge;
-            }
+        if (Intervals::isSubsetOf($merge->getConstraint(), $origin->getConstraint())) {
+            return $merge;
         }
 
         $newConstraint = $constraintClass::create([
diff --git a/src/MergePlugin.php b/src/MergePlugin.php
@@ -343,14 +343,13 @@ public function onPostInstallOrUpdate(ScriptEvent $event)
 
             $lockBackup = null;
             $lock = null;
-            if (!$this->state->isComposer1()) {
-                $file = Factory::getComposerFile();
-                $lock = Factory::getLockFile($file);
-                if (file_exists($lock)) {
-                    $lockBackup = file_get_contents($lock);
-                }
+            $file = Factory::getComposerFile();
+            $lock = Factory::getLockFile($file);
+            if (file_exists($lock)) {
+                $lockBackup = file_get_contents($lock);
             }
 
+
             $config = $this->composer->getConfig();
             $preferSource = $config->get('preferred-install') === 'source';
             $preferDist = $config->get('preferred-install') === 'dist';
@@ -371,17 +370,10 @@ public function onPostInstallOrUpdate(ScriptEvent $event)
             );
 
             $installer->setUpdate(true);
-
-            if ($this->state->isComposer1()) {
-                // setUpdateWhitelist() only exists in composer 1.x. Configure as to run phan against composer 2.x
-                // @phan-suppress-next-line PhanUndeclaredMethod
-                $installer->setUpdateWhitelist($requirements);
-            } else {
-                $installer->setUpdateAllowList($requirements);
-            }
+            $installer->setUpdateAllowList($requirements);
 
             $status = $installer->run();
-            if (( $status !== 0 ) && $lockBackup && $lock && !$this->state->isComposer1()) {
+            if (( $status !== 0 ) && $lockBackup && $lock) {
                 $this->logger->log(
                     "\n".'<error>'.
                     'Update to apply merge settings failed, reverting '.$lock.' to its original content.'.
diff --git a/src/PluginState.php b/src/PluginState.php
@@ -25,11 +25,6 @@ class PluginState
      */
     protected $composer;
 
-    /**
-     * @var bool $isComposer1
-     */
-    protected $isComposer1;
-
     /**
      * @var array $includes
      */
@@ -138,17 +133,6 @@ class PluginState
     public function __construct(Composer $composer)
     {
         $this->composer = $composer;
-        $this->isComposer1 = version_compare(PluginInterface::PLUGIN_API_VERSION, '2.0.0', '<');
-    }
-
-    /**
-     * Test if this plugin runs within Composer 1.
-     *
-     * @return bool
-     */
-    public function isComposer1()
-    {
-        return $this->isComposer1;
     }
 
     /**
diff --git a/tests/phpunit/MergePluginTest.php b/tests/phpunit/MergePluginTest.php
@@ -596,24 +596,16 @@ function ($args) use ($that, $io) {
 
                 $config = new Config();
                 $mockIO = $io->reveal();
-                if (version_compare('2.0.0', PluginInterface::PLUGIN_API_VERSION, '>')) {
-                    return new VcsRepository(
-                        $args[1],
-                        $mockIO,
-                        $config
-                    );
-                } else {
-                    $httpDownloader = new HttpDownloader(
-                        $mockIO,
-                        $config
-                    );
-                    return new VcsRepository(
-                        $args[1],
-                        $mockIO,
-                        $config,
-                        $httpDownloader
-                    );
-                }
+                $httpDownloader = new HttpDownloader(
+                    $mockIO,
+                    $config
+                );
+                return new VcsRepository(
+                    $args[1],
+                    $mockIO,
+                    $config,
+                    $httpDownloader
+                );
             }
         );
         $repoManager->prependRepository(Argument::any())->will(
@@ -688,25 +680,17 @@ function ($args) use ($that, $io) {
 
                 $config = new Config();
                 $mockIO = $io->reveal();
-                if (version_compare('2.0.0', PluginInterface::PLUGIN_API_VERSION, '>')) {
-                    return new VcsRepository(
-                        $args[1],
-                        $mockIO,
-                        $config
-                    );
-                } else {
-                    $httpDownloader = new HttpDownloader(
-                        $mockIO,
-                        $config
-                    );
-
-                    return new VcsRepository(
-                        $args[1],
-                        $mockIO,
-                        $config,
-                        $httpDownloader
-                    );
-                }
+                $httpDownloader = new HttpDownloader(
+                    $mockIO,
+                    $config
+                );
+
+                return new VcsRepository(
+                    $args[1],
+                    $mockIO,
+                    $config,
+                    $httpDownloader
+                );
             }
         );
         $repoManager->prependRepository(Argument::any())->will(
@@ -1252,13 +1236,6 @@ public function testHasBranchAlias($fireInit)
         $io = $this->io;
         $dir = $this->fixtureDir(__FUNCTION__);
 
-        // RootAliasPackage was updated in 06c44ce to include more setters
-        // that we take advantage of if available
-        $haveComposerWithCompleteRootAlias = method_exists(
-            RootPackageInterface::class,
-            'setRepositories'
-        );
-
         $repoManager = $this->prophesize(
             RepositoryManager::class
         );
@@ -1268,25 +1245,17 @@ public function testHasBranchAlias($fireInit)
         )->will(function ($args) use ($io) {
             $config = new Config();
             $mockIO = $io->reveal();
-            if (version_compare('2.0.0', PluginInterface::PLUGIN_API_VERSION, '>')) {
-                return new VcsRepository(
-                    $args[1],
-                    $mockIO,
-                    $config
-                );
-            } else {
-                $httpDownloader = new HttpDownloader(
-                    $mockIO,
-                    $config
-                );
+            $httpDownloader = new HttpDownloader(
+                $mockIO,
+                $config
+            );
 
-                return new VcsRepository(
-                    $args[1],
-                    $mockIO,
-                    $config,
-                    $httpDownloader
-                );
-            }
+            return new VcsRepository(
+                $args[1],
+                $mockIO,
+                $config,
+                $httpDownloader
+            );
         });
         $repoManager->prependRepository(Argument::any())->shouldBeCalled();
         $this->composer->getRepositoryManager()->will(
@@ -1306,29 +1275,14 @@ function () use ($repoManager) {
         $alias->setDevRequires(Argument::type('array'))->shouldBeCalled();
         $alias->setRequires(Argument::type('array'))->shouldBeCalled();
 
-        if ($haveComposerWithCompleteRootAlias) {
-            // When Composer supports it we will apply our changes directly to
-            // the RootAliasPackage
-            $alias->setAutoload(Argument::type('array'))->shouldBeCalled();
-            $alias->setConflicts(Argument::type('array'))->shouldBeCalled();
-            $alias->setDevAutoload(Argument::type('array'))->shouldBeCalled();
-            $alias->setProvides(Argument::type('array'))->shouldBeCalled();
-            $alias->setReplaces(Argument::type('array'))->shouldBeCalled();
-            $alias->setRepositories(Argument::type('array'))->shouldBeCalled();
-            $alias->setStabilityFlags(Argument::type('array'))->shouldBeCalled();
-            $alias->setSuggests(Argument::type('array'))->shouldBeCalled();
-        } else {
-            // With older versions of Composer we will fall back to unwrapping
-            // the aliased RootPackage and make calls to it
-            $root->setAutoload(Argument::type('array'))->shouldBeCalled();
-            $root->setConflicts(Argument::type('array'))->shouldBeCalled();
-            $root->setDevAutoload(Argument::type('array'))->shouldBeCalled();
-            $root->setProvides(Argument::type('array'))->shouldBeCalled();
-            $root->setReplaces(Argument::type('array'))->shouldBeCalled();
-            $root->setRepositories(Argument::type('array'))->shouldBeCalled();
-            $root->setSuggests(Argument::type('array'))->shouldBeCalled();
-            $alias->getAliasOf()->shouldBeCalled();
-        }
+        $alias->setAutoload(Argument::type('array'))->shouldBeCalled();
+        $alias->setConflicts(Argument::type('array'))->shouldBeCalled();
+        $alias->setDevAutoload(Argument::type('array'))->shouldBeCalled();
+        $alias->setProvides(Argument::type('array'))->shouldBeCalled();
+        $alias->setReplaces(Argument::type('array'))->shouldBeCalled();
+        $alias->setRepositories(Argument::type('array'))->shouldBeCalled();
+        $alias->setStabilityFlags(Argument::type('array'))->shouldBeCalled();
+        $alias->setSuggests(Argument::type('array'))->shouldBeCalled();
 
         $alias = $alias->reveal();
 
