Refactor ignore platform reqs checks (#10079)

Introduces a `PlatformRequirementFilter` with methods that help to decide if a requirement is ignored or not as discussed in #10045 but without changing behaviour.

src/Composer/Autoload/AutoloadGenerator.php

@@ -14,13 +14,15 @@ namespace Composer\Autoload;
 
 use Composer\Config;
 use Composer\EventDispatcher\EventDispatcher;
+use Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
 use Composer\Installer\InstallationManager;
 use Composer\IO\IOInterface;
 use Composer\Package\AliasPackage;
 use Composer\Package\PackageInterface;
 use Composer\Package\RootPackageInterface;
 use Composer\Repository\InstalledRepositoryInterface;
-use Composer\Repository\PlatformRepository;
 use Composer\Semver\Constraint\Bound;
 use Composer\Util\Filesystem;
 use Composer\Util\Platform;
@@ -70,14 +72,16 @@ class AutoloadGenerator
     private $runScripts = false;
 
     /**
-     * @var bool|string[]
+     * @var PlatformRequirementFilterInterface
      */
-    private $ignorePlatformReqs = false;
+    private $platformRequirementFilter;
 
     public function __construct(EventDispatcher $eventDispatcher, IOInterface $io = null)
     {
         $this->eventDispatcher = $eventDispatcher;
         $this->io = $io;
+
+        $this->platformRequirementFilter = PlatformRequirementFilterFactory::ignoreNothing();
     }
 
     /**
@@ -133,16 +137,22 @@ class AutoloadGenerator
      *
      * @param bool|string[] $ignorePlatformReqs
      * @return void
+     *
+     * @deprecated use setPlatformRequirementFilter instead
      */
     public function setIgnorePlatformRequirements($ignorePlatformReqs)
     {
-        if (is_array($ignorePlatformReqs)) {
+        trigger_error('AutoloadGenerator::setIgnorePlatformRequirements is deprecated since Composer 2.2, use setPlatformRequirementFilter instead.', E_USER_DEPRECATED);
-            $this->ignorePlatformReqs = array_filter($ignorePlatformReqs, function ($req) {
+
-                return PlatformRepository::isPlatformPackage($req);
+        $this->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
-            });
-        } else {
-            $this->ignorePlatformReqs = (bool) $ignorePlatformReqs;
     }
+
+    /**
+     * @return void
+     */
+    public function setPlatformRequirementFilter(PlatformRequirementFilterInterface $platformRequirementFilter)
+    {
+        $this->platformRequirementFilter = $platformRequirementFilter;
     }
 
     /**
@@ -391,10 +401,10 @@ EOF;
             unlink($includeFilesFilePath);
         }
         $filesystem->filePutContentsIfModified($targetDir.'/autoload_static.php', $this->getStaticFile($suffix, $targetDir, $vendorPath, $basePath, $staticPhpVersion));
-        $checkPlatform = $config->get('platform-check') && $this->ignorePlatformReqs !== true;
+        $checkPlatform = $config->get('platform-check') && !($this->platformRequirementFilter instanceof IgnoreAllPlatformRequirementFilter);
         $platformCheckContent = null;
         if ($checkPlatform) {
-            $platformCheckContent = $this->getPlatformCheck($packageMap, $this->ignorePlatformReqs ?: array(), $config->get('platform-check'), $devPackageNames);
+            $platformCheckContent = $this->getPlatformCheck($packageMap, $config->get('platform-check'), $devPackageNames);
             if (null === $platformCheckContent) {
                 $checkPlatform = false;
             }
@@ -740,12 +750,11 @@ EOF;
 
     /**
      * @param array<int, array{0: PackageInterface, 1: string}> $packageMap
-     * @param string[] $ignorePlatformReqs
      * @param bool $checkPlatform
      * @param string[] $devPackageNames
      * @return ?string
      */
-    protected function getPlatformCheck(array $packageMap, array $ignorePlatformReqs, $checkPlatform, array $devPackageNames)
+    protected function getPlatformCheck(array $packageMap, $checkPlatform, array $devPackageNames)
     {
         $lowestPhpVersion = Bound::zero();
         $requiredExtensions = array();
@@ -768,7 +777,7 @@ EOF;
             }
 
             foreach ($package->getRequires() as $link) {
-                if (in_array($link->getTarget(), $ignorePlatformReqs, true)) {
+                if ($this->platformRequirementFilter->isIgnored($link->getTarget())) {
                     continue;
                 }
 

src/Composer/Command/CreateProjectCommand.php

@@ -14,6 +14,9 @@ namespace Composer\Command;
 
 use Composer\Config;
 use Composer\Factory;
+use Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
 use Composer\Installer;
 use Composer\Installer\ProjectInstaller;
 use Composer\Installer\SuggestedPackagesReporter;
@@ -159,7 +162,7 @@ EOT
             $input->getOption('no-scripts'),
             $input->getOption('no-progress'),
             $input->getOption('no-install'),
-            $ignorePlatformReqs,
+            PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs),
             !$input->getOption('no-secure-http'),
             $input->getOption('add-repository')
         );
@@ -178,14 +181,13 @@ EOT
      * @param bool $noScripts
      * @param bool $noProgress
      * @param bool $noInstall
-     * @param bool $ignorePlatformReqs
      * @param bool $secureHttp
      * @param bool $addRepository
      *
      * @return int
      * @throws \Exception
      */
-    public function installProject(IOInterface $io, Config $config, InputInterface $input, $packageName = null, $directory = null, $packageVersion = null, $stability = 'stable', $preferSource = false, $preferDist = false, $installDevPackages = false, $repositories = null, $disablePlugins = false, $noScripts = false, $noProgress = false, $noInstall = false, $ignorePlatformReqs = false, $secureHttp = true, $addRepository = false)
+    public function installProject(IOInterface $io, Config $config, InputInterface $input, $packageName = null, $directory = null, $packageVersion = null, $stability = 'stable', $preferSource = false, $preferDist = false, $installDevPackages = false, $repositories = null, $disablePlugins = false, $noScripts = false, $noProgress = false, $noInstall = false, PlatformRequirementFilterInterface $platformRequirementFilter = null, $secureHttp = true, $addRepository = false)
     {
         $oldCwd = getcwd();
 
@@ -193,13 +195,15 @@ EOT
             $repositories = (array) $repositories;
         }
 
+        $platformRequirementFilter = $platformRequirementFilter ?: PlatformRequirementFilterFactory::ignoreNothing();
+
         // we need to manually load the configuration to pass the auth credentials to the io interface!
         $io->loadConfiguration($config);
 
         $this->suggestedPackagesReporter = new SuggestedPackagesReporter($io);
 
         if ($packageName !== null) {
-            $installedFromVcs = $this->installRootPackage($io, $config, $packageName, $directory, $packageVersion, $stability, $preferSource, $preferDist, $installDevPackages, $repositories, $disablePlugins, $noScripts, $noProgress, $ignorePlatformReqs, $secureHttp);
+            $installedFromVcs = $this->installRootPackage($io, $config, $packageName, $platformRequirementFilter, $directory, $packageVersion, $stability, $preferSource, $preferDist, $installDevPackages, $repositories, $disablePlugins, $noScripts, $noProgress, $secureHttp);
         } else {
             $installedFromVcs = false;
         }
@@ -250,7 +254,7 @@ EOT
             $installer->setPreferSource($preferSource)
                 ->setPreferDist($preferDist)
                 ->setDevMode($installDevPackages)
-                ->setIgnorePlatformRequirements($ignorePlatformReqs)
+                ->setPlatformRequirementFilter($platformRequirementFilter)
                 ->setSuggestedPackagesReporter($this->suggestedPackagesReporter)
                 ->setOptimizeAutoloader($config->get('optimize-autoloader'))
                 ->setClassMapAuthoritative($config->get('classmap-authoritative'))
@@ -342,13 +346,12 @@ EOT
      * @param bool $disablePlugins
      * @param bool $noScripts
      * @param bool $noProgress
-     * @param bool $ignorePlatformReqs
      * @param bool $secureHttp
      *
      * @return bool
      * @throws \Exception
      */
-    protected function installRootPackage(IOInterface $io, Config $config, $packageName, $directory = null, $packageVersion = null, $stability = 'stable', $preferSource = false, $preferDist = false, $installDevPackages = false, array $repositories = null, $disablePlugins = false, $noScripts = false, $noProgress = false, $ignorePlatformReqs = false, $secureHttp = true)
+    protected function installRootPackage(IOInterface $io, Config $config, $packageName, PlatformRequirementFilterInterface $platformRequirementFilter, $directory = null, $packageVersion = null, $stability = 'stable', $preferSource = false, $preferDist = false, $installDevPackages = false, array $repositories = null, $disablePlugins = false, $noScripts = false, $noProgress = false, $secureHttp = true)
     {
         if (!$secureHttp) {
             $config->merge(array('config' => array('secure-http' => false)));
@@ -425,11 +428,11 @@ EOT
 
         // find the latest version if there are multiple
         $versionSelector = new VersionSelector($repositorySet, $platformRepo);
-        $package = $versionSelector->findBestCandidate($name, $packageVersion, $stability, $ignorePlatformReqs);
+        $package = $versionSelector->findBestCandidate($name, $packageVersion, $stability, $platformRequirementFilter);
 
         if (!$package) {
             $errorMessage = "Could not find package $name with " . ($packageVersion ? "version $packageVersion" : "stability $stability");
-            if (true !== $ignorePlatformReqs && $versionSelector->findBestCandidate($name, $packageVersion, $stability, true)) {
+            if (!($platformRequirementFilter instanceof IgnoreAllPlatformRequirementFilter) && $versionSelector->findBestCandidate($name, $packageVersion, $stability, PlatformRequirementFilterFactory::ignoreAll())) {
                 throw new \InvalidArgumentException($errorMessage .' in a version installable using your PHP version, PHP extensions and Composer version.');
             }
 

src/Composer/Command/DumpAutoloadCommand.php

@@ -12,6 +12,7 @@
 
 namespace Composer\Command;
 
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
 use Composer\Plugin\CommandEvent;
 use Composer\Plugin\PluginEvents;
 use Symfony\Component\Console\Input\InputInterface;
@@ -97,7 +98,7 @@ EOT
         $generator->setClassMapAuthoritative($authoritative);
         $generator->setRunScripts(true);
         $generator->setApcu($apcu, $apcuPrefix);
-        $generator->setIgnorePlatformRequirements($ignorePlatformReqs);
+        $generator->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
         $numberOfClasses = $generator->dump($config, $localRepo, $package, $installationManager, 'composer', $optimize);
 
         if ($authoritative) {

src/Composer/Command/InitCommand.php

@@ -13,6 +13,8 @@
 namespace Composer\Command;
 
 use Composer\Factory;
+use Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
 use Composer\Json\JsonFile;
 use Composer\Json\JsonValidationException;
 use Composer\Package\BasePackage;
@@ -890,22 +892,23 @@ EOT
         if ($input->hasOption('ignore-platform-reqs') && $input->hasOption('ignore-platform-req')) {
             $ignorePlatformReqs = $input->getOption('ignore-platform-reqs') ?: ($input->getOption('ignore-platform-req') ?: false);
         }
+        $platformRequirementFilter = PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs);
 
         // find the latest version allowed in this repo set
         $versionSelector = new VersionSelector($this->getRepositorySet($input, $minimumStability), $platformRepo);
         $effectiveMinimumStability = $minimumStability ?: $this->getMinimumStability($input);
 
-        $package = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, $ignorePlatformReqs);
+        $package = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, $platformRequirementFilter);
 
         if (!$package) {
             // platform packages can not be found in the pool in versions other than the local platform's has
             // so if platform reqs are ignored we just take the user's word for it
-            if ((true === $ignorePlatformReqs || (is_array($ignorePlatformReqs) && in_array($name, $ignorePlatformReqs))) && PlatformRepository::isPlatformPackage($name)) {
+            if ($platformRequirementFilter->isIgnored($name)) {
                 return array($name, $requiredVersion ?: '*');
             }
 
             // Check whether the package requirements were the problem
-            if (true !== $ignorePlatformReqs && ($candidate = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, true))) {
+            if (!($platformRequirementFilter instanceof IgnoreAllPlatformRequirementFilter) && ($candidate = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, PlatformRequirementFilterFactory::ignoreAll()))) {
                 throw new \InvalidArgumentException(sprintf(
                     'Package %s%s has requirements incompatible with your PHP version, PHP extensions and Composer version' . $this->getPlatformExceptionDetails($candidate, $platformRepo),
                     $name,
@@ -913,9 +916,9 @@ EOT
                 ));
             }
             // Check whether the minimum stability was the problem but the package exists
-            if ($package = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, $ignorePlatformReqs, RepositorySet::ALLOW_UNACCEPTABLE_STABILITIES)) {
+            if ($package = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, $platformRequirementFilter, RepositorySet::ALLOW_UNACCEPTABLE_STABILITIES)) {
                 // we must first verify if a valid package would be found in a lower priority repository
-                if ($allReposPackage = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, $ignorePlatformReqs, RepositorySet::ALLOW_SHADOWED_REPOSITORIES)) {
+                if ($allReposPackage = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, $platformRequirementFilter, RepositorySet::ALLOW_SHADOWED_REPOSITORIES)) {
                     throw new \InvalidArgumentException(
                         'Package '.$name.' exists in '.$allReposPackage->getRepository()->getRepoName().' and '.$package->getRepository()->getRepoName().' which has a higher repository priority. The packages with higher priority do not match your minimum-stability and are therefore not installable. See https://getcomposer.org/repoprio for details and assistance.'
                     );
@@ -928,9 +931,9 @@ EOT
                 ));
             }
             // Check whether the required version was the problem
-            if ($requiredVersion && $package = $versionSelector->findBestCandidate($name, null, $preferredStability, $ignorePlatformReqs)) {
+            if ($requiredVersion && $package = $versionSelector->findBestCandidate($name, null, $preferredStability, $platformRequirementFilter)) {
                 // we must first verify if a valid package would be found in a lower priority repository
-                if ($allReposPackage = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, false, RepositorySet::ALLOW_SHADOWED_REPOSITORIES)) {
+                if ($allReposPackage = $versionSelector->findBestCandidate($name, $requiredVersion, $preferredStability, PlatformRequirementFilterFactory::ignoreNothing(), RepositorySet::ALLOW_SHADOWED_REPOSITORIES)) {
                     throw new \InvalidArgumentException(
                         'Package '.$name.' exists in '.$allReposPackage->getRepository()->getRepoName().' and '.$package->getRepository()->getRepoName().' which has a higher repository priority. The packages with higher priority do not match your constraint and are therefore not installable. See https://getcomposer.org/repoprio for details and assistance.'
                     );
@@ -943,9 +946,9 @@ EOT
                 ));
             }
             // Check whether the PHP version was the problem for all versions
-            if (true !== $ignorePlatformReqs && ($candidate = $versionSelector->findBestCandidate($name, null, $preferredStability, true, RepositorySet::ALLOW_UNACCEPTABLE_STABILITIES))) {
+            if (!($platformRequirementFilter instanceof IgnoreAllPlatformRequirementFilter) && ($candidate = $versionSelector->findBestCandidate($name, null, $preferredStability, PlatformRequirementFilterFactory::ignoreAll(), RepositorySet::ALLOW_UNACCEPTABLE_STABILITIES))) {
                 $additional = '';
-                if (false === $versionSelector->findBestCandidate($name, null, $preferredStability, true)) {
+                if (false === $versionSelector->findBestCandidate($name, null, $preferredStability, PlatformRequirementFilterFactory::ignoreAll())) {
                     $additional = PHP_EOL.PHP_EOL.'Additionally, the package was only found with a stability of "'.$candidate->getStability().'" while your minimum stability is "'.$effectiveMinimumStability.'".';
                 }
 

src/Composer/Command/InstallCommand.php

@@ -12,6 +12,7 @@
 
 namespace Composer\Command;
 
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
 use Composer\Installer;
 use Composer\Plugin\CommandEvent;
 use Composer\Plugin\PluginEvents;
@@ -130,7 +131,7 @@ EOT
             ->setOptimizeAutoloader($optimize)
             ->setClassMapAuthoritative($authoritative)
             ->setApcuAutoloader($apcu, $apcuPrefix)
-            ->setIgnorePlatformRequirements($ignorePlatformReqs)
+            ->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs))
         ;
 
         if ($input->getOption('no-plugins')) {

src/Composer/Command/ReinstallCommand.php

@@ -15,6 +15,7 @@ namespace Composer\Command;
 use Composer\DependencyResolver\Operation\InstallOperation;
 use Composer\DependencyResolver\Operation\UninstallOperation;
 use Composer\DependencyResolver\Transaction;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
 use Composer\Package\AliasPackage;
 use Composer\Package\BasePackage;
 use Composer\Plugin\CommandEvent;
@@ -158,7 +159,7 @@ EOT
             $generator = $composer->getAutoloadGenerator();
             $generator->setClassMapAuthoritative($authoritative);
             $generator->setApcu($apcu, $apcuPrefix);
-            $generator->setIgnorePlatformRequirements($ignorePlatformReqs);
+            $generator->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
             $generator->dump($config, $localRepo, $package, $installationManager, 'composer', $optimize);
         }
 

src/Composer/Command/RemoveCommand.php

@@ -14,6 +14,7 @@ namespace Composer\Command;
 
 use Composer\Config\JsonConfigSource;
 use Composer\DependencyResolver\Request;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
 use Composer\Installer;
 use Composer\Plugin\CommandEvent;
 use Composer\Plugin\PluginEvents;
@@ -265,7 +266,7 @@ EOT
             ->setUpdate(true)
             ->setInstall(!$input->getOption('no-install'))
             ->setUpdateAllowTransitiveDependencies($updateAllowTransitiveDependencies)
-            ->setIgnorePlatformRequirements($ignorePlatformReqs)
+            ->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs))
             ->setDryRun($dryRun)
         ;
 

src/Composer/Command/RequireCommand.php

@@ -13,6 +13,7 @@
 namespace Composer\Command;
 
 use Composer\DependencyResolver\Request;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
 use Composer\Util\Filesystem;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputArgument;
@@ -413,7 +414,7 @@ EOT
             ->setUpdate(true)
             ->setInstall(!$input->getOption('no-install'))
             ->setUpdateAllowTransitiveDependencies($updateAllowTransitiveDependencies)
-            ->setIgnorePlatformRequirements($ignorePlatformReqs)
+            ->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs))
             ->setPreferStable($input->getOption('prefer-stable'))
             ->setPreferLowest($input->getOption('prefer-lowest'))
         ;

src/Composer/Command/UpdateCommand.php

@@ -14,6 +14,7 @@ namespace Composer\Command;
 
 use Composer\Composer;
 use Composer\DependencyResolver\Request;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
 use Composer\Installer;
 use Composer\IO\IOInterface;
 use Composer\Package\Loader\RootPackageLoader;
@@ -236,7 +237,7 @@ EOT
             ->setUpdateMirrors($updateMirrors)
             ->setUpdateAllowList($packages)
             ->setUpdateAllowTransitiveDependencies($updateAllowTransitiveDependencies)
-            ->setIgnorePlatformRequirements($ignorePlatformReqs)
+            ->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs))
             ->setPreferStable($input->getOption('prefer-stable'))
             ->setPreferLowest($input->getOption('prefer-lowest'))
         ;

src/Composer/DependencyResolver/RuleSetGenerator.php

@@ -12,6 +12,8 @@
 
 namespace Composer\DependencyResolver;
 
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
 use Composer\Package\BasePackage;
 use Composer\Package\AliasPackage;
 use Composer\Repository\PlatformRepository;
@@ -160,10 +162,9 @@ class RuleSetGenerator
     }
 
     /**
-     * @param bool|string[] $ignorePlatformReqs
      * @return void
      */
-    protected function addRulesForPackage(BasePackage $package, $ignorePlatformReqs)
+    protected function addRulesForPackage(BasePackage $package, PlatformRequirementFilterInterface $platformRequirementFilter)
     {
         /** @var \SplQueue<BasePackage> */
         $workQueue = new \SplQueue;
@@ -196,7 +197,7 @@ class RuleSetGenerator
             }
 
             foreach ($package->getRequires() as $link) {
-                if ((true === $ignorePlatformReqs || (is_array($ignorePlatformReqs) && in_array($link->getTarget(), $ignorePlatformReqs, true))) && PlatformRepository::isPlatformPackage($link->getTarget())) {
+                if ($platformRequirementFilter->isIgnored($link->getTarget())) {
                     continue;
                 }
 
@@ -212,10 +213,9 @@ class RuleSetGenerator
     }
 
     /**
-     * @param bool|string[] $ignorePlatformReqs
      * @return void
      */
-    protected function addConflictRules($ignorePlatformReqs = false)
+    protected function addConflictRules(PlatformRequirementFilterInterface $platformRequirementFilter)
     {
         /** @var BasePackage $package */
         foreach ($this->addedMap as $package) {
@@ -225,7 +225,7 @@ class RuleSetGenerator
                     continue;
                 }
 
-                if ((true === $ignorePlatformReqs || (is_array($ignorePlatformReqs) && in_array($link->getTarget(), $ignorePlatformReqs, true))) && PlatformRepository::isPlatformPackage($link->getTarget())) {
+                if ($platformRequirementFilter->isIgnored($link->getTarget())) {
                     continue;
                 }
 
@@ -251,10 +251,9 @@ class RuleSetGenerator
     }
 
     /**
-     * @param bool|string[] $ignorePlatformReqs
      * @return void
      */
-    protected function addRulesForRequest(Request $request, $ignorePlatformReqs)
+    protected function addRulesForRequest(Request $request, PlatformRequirementFilterInterface $platformRequirementFilter)
     {
         foreach ($request->getFixedPackages() as $package) {
             if ($package->id == -1) {
@@ -267,7 +266,7 @@ class RuleSetGenerator
                 throw new \LogicException("Fixed package ".$package->getPrettyString()." was not added to solver pool.");
             }
 
-            $this->addRulesForPackage($package, $ignorePlatformReqs);
+            $this->addRulesForPackage($package, $platformRequirementFilter);
 
             $rule = $this->createInstallOneOfRule(array($package), Rule::RULE_FIXED, array(
                 'package' => $package,
@@ -276,14 +275,14 @@ class RuleSetGenerator
         }
 
         foreach ($request->getRequires() as $packageName => $constraint) {
-            if ((true === $ignorePlatformReqs || (is_array($ignorePlatformReqs) && in_array($packageName, $ignorePlatformReqs, true))) && PlatformRepository::isPlatformPackage($packageName)) {
+            if ($platformRequirementFilter->isIgnored($packageName)) {
                 continue;
             }
 
             $packages = $this->pool->whatProvides($packageName, $constraint);
             if ($packages) {
                 foreach ($packages as $package) {
-                    $this->addRulesForPackage($package, $ignorePlatformReqs);
+                    $this->addRulesForPackage($package, $platformRequirementFilter);
                 }
 
                 $rule = $this->createInstallOneOfRule($packages, Rule::RULE_ROOT_REQUIRE, array(
@@ -296,10 +295,9 @@ class RuleSetGenerator
     }
 
     /**
-     * @param bool|string[] $ignorePlatformReqs
      * @return void
      */
-    protected function addRulesForRootAliases($ignorePlatformReqs)
+    protected function addRulesForRootAliases(PlatformRequirementFilterInterface $platformRequirementFilter)
     {
         foreach ($this->pool->getPackages() as $package) {
             // ensure that rules for root alias packages and aliases of packages which were loaded are also loaded
@@ -309,22 +307,23 @@ class RuleSetGenerator
                 $package instanceof AliasPackage &&
                 ($package->isRootPackageAlias() || isset($this->addedMap[$package->getAliasOf()->id]))
             ) {
-                $this->addRulesForPackage($package, $ignorePlatformReqs);
+                $this->addRulesForPackage($package, $platformRequirementFilter);
             }
         }
     }
 
     /**
-     * @param bool|string[] $ignorePlatformReqs
      * @return RuleSet
      */
-    public function getRulesFor(Request $request, $ignorePlatformReqs = false)
+    public function getRulesFor(Request $request, PlatformRequirementFilterInterface $platformRequirementFilter = null)
     {
-        $this->addRulesForRequest($request, $ignorePlatformReqs);
+        $platformRequirementFilter = $platformRequirementFilter ?: PlatformRequirementFilterFactory::ignoreNothing();
 
-        $this->addRulesForRootAliases($ignorePlatformReqs);
+        $this->addRulesForRequest($request, $platformRequirementFilter);
 
-        $this->addConflictRules($ignorePlatformReqs);
+        $this->addRulesForRootAliases($platformRequirementFilter);
+
+        $this->addConflictRules($platformRequirementFilter);
 
         // Remove references to packages
         $this->addedMap = $this->addedPackagesByNames = array();

src/Composer/DependencyResolver/Solver.php

@@ -12,9 +12,10 @@
 
 namespace Composer\DependencyResolver;
 
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
 use Composer\IO\IOInterface;
 use Composer\Package\BasePackage;
-use Composer\Repository\PlatformRepository;
 
 /**
  * @author Nils Adermann <naderman@naderman.de>
@@ -166,13 +167,12 @@ class Solver
     }
 
     /**
-     * @param bool|string[] $ignorePlatformReqs
      * @return void
      */
-    protected function checkForRootRequireProblems(Request $request, $ignorePlatformReqs)
+    protected function checkForRootRequireProblems(Request $request, PlatformRequirementFilterInterface $platformRequirementFilter)
     {
         foreach ($request->getRequires() as $packageName => $constraint) {
-            if ((true === $ignorePlatformReqs || (is_array($ignorePlatformReqs) && in_array($packageName, $ignorePlatformReqs, true))) && PlatformRepository::isPlatformPackage($packageName)) {
+            if ($platformRequirementFilter->isIgnored($packageName)) {
                 continue;
             }
 
@@ -185,18 +185,19 @@ class Solver
     }
 
     /**
-     * @param  bool|string[]      $ignorePlatformReqs
      * @return LockTransaction
      */
-    public function solve(Request $request, $ignorePlatformReqs = false)
+    public function solve(Request $request, PlatformRequirementFilterInterface $platformRequirementFilter = null)
     {
+        $platformRequirementFilter = $platformRequirementFilter ?: PlatformRequirementFilterFactory::ignoreNothing();
+
         $this->setupFixedMap($request);
 
         $this->io->writeError('Generating rules', true, IOInterface::DEBUG);
         $ruleSetGenerator = new RuleSetGenerator($this->policy, $this->pool);
-        $this->rules = $ruleSetGenerator->getRulesFor($request, $ignorePlatformReqs);
+        $this->rules = $ruleSetGenerator->getRulesFor($request, $platformRequirementFilter);
         unset($ruleSetGenerator);
-        $this->checkForRootRequireProblems($request, $ignorePlatformReqs);
+        $this->checkForRootRequireProblems($request, $platformRequirementFilter);
         $this->decisions = new Decisions($this->pool);
         $this->watchGraph = new RuleWatchGraph;
 

src/Composer/Filter/PlatformRequirementFilter/IgnoreAllPlatformRequirementFilter.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace Composer\Filter\PlatformRequirementFilter;
+
+use Composer\Repository\PlatformRepository;
+
+final class IgnoreAllPlatformRequirementFilter implements PlatformRequirementFilterInterface
+{
+    /**
+     * @param string $req
+     * @return bool
+     */
+    public function isIgnored($req)
+    {
+        return PlatformRepository::isPlatformPackage($req);
+    }
+}

src/Composer/Filter/PlatformRequirementFilter/IgnoreListPlatformRequirementFilter.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace Composer\Filter\PlatformRequirementFilter;
+
+use Composer\Repository\PlatformRepository;
+
+final class IgnoreListPlatformRequirementFilter implements PlatformRequirementFilterInterface
+{
+    /**
+     * @var string[]
+     */
+    private $reqList;
+
+    /**
+     * @param string[] $reqList
+     */
+    public function __construct(array $reqList)
+    {
+        $this->reqList = $reqList;
+    }
+
+    /**
+     * @param string $req
+     * @return bool
+     */
+    public function isIgnored($req)
+    {
+        if (!PlatformRepository::isPlatformPackage($req)) {
+            return false;
+        }
+
+        return in_array($req, $this->reqList, true);
+    }
+}

src/Composer/Filter/PlatformRequirementFilter/IgnoreNothingPlatformRequirementFilter.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Composer\Filter\PlatformRequirementFilter;
+
+final class IgnoreNothingPlatformRequirementFilter implements PlatformRequirementFilterInterface
+{
+    /**
+     * @param string $req
+     * @return false
+     */
+    public function isIgnored($req)
+    {
+        return false;
+    }
+}

src/Composer/Filter/PlatformRequirementFilter/PlatformRequirementFilterFactory.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace Composer\Filter\PlatformRequirementFilter;
+
+final class PlatformRequirementFilterFactory
+{
+    /**
+     * @param mixed $boolOrList
+     *
+     * @return PlatformRequirementFilterInterface
+     */
+    public static function fromBoolOrList($boolOrList)
+    {
+        if (is_bool($boolOrList)) {
+            return $boolOrList ? self::ignoreAll() : self::ignoreNothing();
+        }
+
+        if (is_array($boolOrList)) {
+            return new IgnoreListPlatformRequirementFilter($boolOrList);
+        }
+
+        throw new \InvalidArgumentException(
+            sprintf(
+                'PlatformRequirementFilter: Unknown $boolOrList parameter %s. Please report at https://github.com/composer/composer/issues/new.',
+                gettype($boolOrList)
+            )
+        );
+    }
+
+    /**
+     * @return PlatformRequirementFilterInterface
+     */
+    public static function ignoreAll()
+    {
+        return new IgnoreAllPlatformRequirementFilter();
+    }
+
+    /**
+     * @return PlatformRequirementFilterInterface
+     */
+    public static function ignoreNothing()
+    {
+        return new IgnoreNothingPlatformRequirementFilter();
+    }
+}

src/Composer/Filter/PlatformRequirementFilter/PlatformRequirementFilterInterface.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace Composer\Filter\PlatformRequirementFilter;
+
+interface PlatformRequirementFilterInterface
+{
+    /**
+     * @param string $req
+     * @return bool
+     */
+    public function isIgnored($req);
+}

src/Composer/Installer.php

@@ -27,6 +27,8 @@ use Composer\DependencyResolver\SolverProblemsException;
 use Composer\DependencyResolver\PolicyInterface;
 use Composer\Downloader\DownloadManager;
 use Composer\EventDispatcher\EventDispatcher;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
 use Composer\Installer\InstallationManager;
 use Composer\Installer\InstallerEvents;
 use Composer\Installer\SuggestedPackagesReporter;
@@ -150,8 +152,6 @@ class Installer
     protected $dumpAutoloader = true;
     /** @var bool */
     protected $runScripts = true;
-    /** @var bool|string[] */
-    protected $ignorePlatformReqs = false;
     /** @var bool */
     protected $preferStable = false;
     /** @var bool */
@@ -177,6 +177,11 @@ class Installer
      */
     protected $suggestedPackagesReporter;
 
+    /**
+     * @var PlatformRequirementFilterInterface
+     */
+    protected $platformRequirementFilter;
+
     /**
      * @var ?RepositoryInterface
      */
@@ -207,6 +212,7 @@ class Installer
         $this->eventDispatcher = $eventDispatcher;
         $this->autoloadGenerator = $autoloadGenerator;
         $this->suggestedPackagesReporter = new SuggestedPackagesReporter($this->io);
+        $this->platformRequirementFilter = PlatformRequirementFilterFactory::ignoreNothing();
 
         $this->writeLock = $config->get('lock');
     }
@@ -329,7 +335,7 @@ class Installer
             $this->autoloadGenerator->setClassMapAuthoritative($this->classMapAuthoritative);
             $this->autoloadGenerator->setApcu($this->apcuAutoloader, $this->apcuAutoloaderPrefix);
             $this->autoloadGenerator->setRunScripts($this->runScripts);
-            $this->autoloadGenerator->setIgnorePlatformRequirements($this->ignorePlatformReqs);
+            $this->autoloadGenerator->setPlatformRequirementFilter($this->platformRequirementFilter);
             $this->autoloadGenerator->dump($this->config, $localRepo, $this->package, $this->installationManager, 'composer', $this->optimizeAutoloader);
         }
 
@@ -431,7 +437,7 @@ class Installer
         // solve dependencies
         $solver = new Solver($policy, $pool, $this->io);
         try {
-            $lockTransaction = $solver->solve($request, $this->ignorePlatformReqs);
+            $lockTransaction = $solver->solve($request, $this->platformRequirementFilter);
             $ruleSetSize = $solver->getRuleSetSize();
             $solver = null;
         } catch (SolverProblemsException $e) {
@@ -609,7 +615,7 @@ class Installer
 
         $solver = new Solver($policy, $pool, $this->io);
         try {
-            $nonDevLockTransaction = $solver->solve($request, $this->ignorePlatformReqs);
+            $nonDevLockTransaction = $solver->solve($request, $this->platformRequirementFilter);
             $solver = null;
         } catch (SolverProblemsException $e) {
             $err = 'Unable to find a compatible set of packages based on your non-dev requirements alone.';
@@ -674,7 +680,7 @@ class Installer
             // solve dependencies
             $solver = new Solver($policy, $pool, $this->io);
             try {
-                $lockTransaction = $solver->solve($request, $this->ignorePlatformReqs);
+                $lockTransaction = $solver->solve($request, $this->platformRequirementFilter);
                 $solver = null;
 
                 // installing the locked packages on this platform resulted in lock modifying operations, there wasn't a conflict, but the lock file as-is seems to not work on this system
@@ -799,7 +805,7 @@ class Installer
         $rootRequires = array();
         foreach ($requires as $req => $constraint) {
             // skip platform requirements from the root package to avoid filtering out existing platform packages
-            if ((true === $this->ignorePlatformReqs || (is_array($this->ignorePlatformReqs) && in_array($req, $this->ignorePlatformReqs, true))) && PlatformRepository::isPlatformPackage($req)) {
+            if ($this->platformRequirementFilter->isIgnored($req)) {
                 continue;
             }
             if ($constraint instanceof Link) {
@@ -1242,17 +1248,24 @@ class Installer
      * @param  bool|string[] $ignorePlatformReqs
      *
      * @return Installer
+     *
+     * @deprecated use setPlatformRequirementFilter instead
      */
     public function setIgnorePlatformRequirements($ignorePlatformReqs)
     {
-        if (is_array($ignorePlatformReqs)) {
+        trigger_error('Installer::setIgnorePlatformRequirements is deprecated since Composer 2.2, use setPlatformRequirementFilter instead.', E_USER_DEPRECATED);
-            $this->ignorePlatformReqs = array_filter($ignorePlatformReqs, function ($req) {
+
-                return PlatformRepository::isPlatformPackage($req);
+        return $this->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
-            });
-        } else {
-            $this->ignorePlatformReqs = (bool) $ignorePlatformReqs;
     }
 
+    /**
+     * @param PlatformRequirementFilterInterface $platformRequirementFilter
+     * @return Installer
+     */
+    public function setPlatformRequirementFilter(PlatformRequirementFilterInterface $platformRequirementFilter)
+    {
+        $this->platformRequirementFilter = $platformRequirementFilter;
+
         return $this;
     }
 

src/Composer/Package/Version/VersionSelector.php

@@ -12,6 +12,9 @@
 
 namespace Composer\Package\Version;
 
+use Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterInterface;
 use Composer\Package\BasePackage;
 use Composer\Package\AliasPackage;
 use Composer\Package\PackageInterface;
@@ -60,29 +63,34 @@ class VersionSelector
      * @param string                                           $packageName
      * @param string                                           $targetPackageVersion
      * @param string                                           $preferredStability
-     * @param bool|string[] $ignorePlatformReqs
+     * @param PlatformRequirementFilterInterface|bool|string[] $platformRequirementFilter
-     * @param int           $repoSetFlags
+     * @param int                                              $repoSetFlags*
-     *
      * @return PackageInterface|false
      */
-    public function findBestCandidate($packageName, $targetPackageVersion = null, $preferredStability = 'stable', $ignorePlatformReqs = false, $repoSetFlags = 0)
+    public function findBestCandidate($packageName, $targetPackageVersion = null, $preferredStability = 'stable', $platformRequirementFilter = null, $repoSetFlags = 0)
     {
         if (!isset(BasePackage::$stabilities[$preferredStability])) {
             // If you get this, maybe you are still relying on the Composer 1.x signature where the 3rd arg was the php version
             throw new \UnexpectedValueException('Expected a valid stability name as 3rd argument, got '.$preferredStability);
         }
 
+        if (null === $platformRequirementFilter) {
+            $platformRequirementFilter = PlatformRequirementFilterFactory::ignoreNothing();
+        } elseif (!($platformRequirementFilter instanceof PlatformRequirementFilterInterface)) {
+            trigger_error('VersionSelector::findBestCandidate with ignored platform reqs as bool|array is deprecated since Composer 2.2, use an instance of PlatformRequirementFilterInterface instead.', E_USER_DEPRECATED);
+            $platformRequirementFilter = PlatformRequirementFilterFactory::fromBoolOrList($platformRequirementFilter);
+        }
+
         $constraint = $targetPackageVersion ? $this->getParser()->parseConstraints($targetPackageVersion) : null;
         $candidates = $this->repositorySet->findPackages(strtolower($packageName), $constraint, $repoSetFlags);
 
-        if ($this->platformConstraints && true !== $ignorePlatformReqs) {
+        if ($this->platformConstraints && !($platformRequirementFilter instanceof IgnoreAllPlatformRequirementFilter)) {
             $platformConstraints = $this->platformConstraints;
-            $ignorePlatformReqs = $ignorePlatformReqs ?: array();
+            $candidates = array_filter($candidates, function ($pkg) use ($platformConstraints, $platformRequirementFilter) {
-            $candidates = array_filter($candidates, function ($pkg) use ($platformConstraints, $ignorePlatformReqs) {
                 $reqs = $pkg->getRequires();
 
                 foreach ($reqs as $name => $link) {
-                    if (!in_array($name, $ignorePlatformReqs, true)) {
+                    if (!$platformRequirementFilter->isIgnored($name)) {
                         if (isset($platformConstraints[$name])) {
                             foreach ($platformConstraints[$name] as $constraint) {
                                 if ($link->getConstraint()->matches($constraint)) {

tests/Composer/Test/Autoload/AutoloadGeneratorTest.php

@@ -13,6 +13,7 @@
 namespace Composer\Test\Autoload;
 
 use Composer\Autoload\AutoloadGenerator;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
 use Composer\Package\Link;
 use Composer\Package\Version\VersionParser;
 use Composer\Semver\Constraint\Constraint;
@@ -1731,7 +1732,7 @@ EOF;
             ->method('getCanonicalPackages')
             ->will($this->returnValue(array()));
 
-        $this->generator->setIgnorePlatformRequirements($ignorePlatformReqs);
+        $this->generator->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
         $this->generator->dump($this->config, $this->repository, $package, $this->im, 'composer', true, '_1');
 
         if (null === $expectedFixture) {

tests/Composer/Test/Filter/PlatformRequirementFilter/IgnoreAllPlatformRequirementFilterTest.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace Composer\Test\Filter\PlatformRequirementFilter;
+
+use Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter;
+use Composer\Test\TestCase;
+
+final class IgnoreAllPlatformRequirementFilterTest extends TestCase
+{
+    /**
+     * @dataProvider dataIsIgnored
+     *
+     * @param string $req
+     * @param bool $expectIgnored
+     */
+    public function testIsIgnored($req, $expectIgnored)
+    {
+        $platformRequirementFilter = new IgnoreAllPlatformRequirementFilter();
+
+        $this->assertSame($expectIgnored, $platformRequirementFilter->isIgnored($req));
+    }
+
+    /**
+     * @return array<string, mixed[]>
+     */
+    public function dataIsIgnored()
+    {
+        return array(
+            'php is ignored' => array('php', true),
+            'monolog/monolog is not ignored' => array('monolog/monolog', false),
+        );
+    }
+}

tests/Composer/Test/Filter/PlatformRequirementFilter/IgnoreListPlatformRequirementFilterTest.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Composer\Test\Filter\PlatformRequirementFilter;
+
+use Composer\Filter\PlatformRequirementFilter\IgnoreListPlatformRequirementFilter;
+use Composer\Test\TestCase;
+
+final class IgnoreListPlatformRequirementFilterTest extends TestCase
+{
+    /**
+     * @dataProvider dataIsIgnored
+     *
+     * @param string[] $reqList
+     * @param string $req
+     * @param bool $expectIgnored
+     */
+    public function testIsIgnored(array $reqList, $req, $expectIgnored)
+    {
+        $platformRequirementFilter = new IgnoreListPlatformRequirementFilter($reqList);
+
+        $this->assertSame($expectIgnored, $platformRequirementFilter->isIgnored($req));
+    }
+
+    /**
+     * @return array<string, mixed[]>
+     */
+    public function dataIsIgnored()
+    {
+        return array(
+            'ext-json is ignored if listed' => array(array('ext-json', 'monolog/monolog'), 'ext-json', true),
+            'php is not ignored if not listed' => array(array('ext-json', 'monolog/monolog'), 'php', false),
+            'monolog/monolog is not ignored even if listed' => array(array('ext-json', 'monolog/monolog'), 'monolog/monolog', false),
+        );
+    }
+}

tests/Composer/Test/Filter/PlatformRequirementFilter/IgnoreNothingPlatformRequirementFilterTest.php

@@ -0,0 +1,32 @@
+<?php
+
+namespace Composer\Test\Filter\PlatformRequirementFilter;
+
+use Composer\Filter\PlatformRequirementFilter\IgnoreNothingPlatformRequirementFilter;
+use Composer\Test\TestCase;
+
+final class IgnoreNothingPlatformRequirementFilterTest extends TestCase
+{
+    /**
+     * @dataProvider dataIsIgnored
+     *
+     * @param string $req
+     */
+    public function testIsIgnored($req)
+    {
+        $platformRequirementFilter = new IgnoreNothingPlatformRequirementFilter();
+
+        $this->assertFalse($platformRequirementFilter->isIgnored($req));
+    }
+
+    /**
+     * @return array<string, mixed[]>
+     */
+    public function dataIsIgnored()
+    {
+        return array(
+            'php is not ignored' => array('php'),
+            'monolog/monolog is not ignored' => array('monolog/monolog'),
+        );
+    }
+}

tests/Composer/Test/Filter/PlatformRequirementFilter/PlatformRequirementFilterFactoryTest.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace Composer\Test\Filter\PlatformRequirementFilter;
+
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
+use Composer\Test\TestCase;
+
+final class PlatformRequirementFilterFactoryTest extends TestCase
+{
+    /**
+     * @dataProvider dataFromBoolOrList
+     *
+     * @param mixed $boolOrList
+     * @param class-string $expectedInstance
+     */
+    public function testFromBoolOrList($boolOrList, $expectedInstance)
+    {
+        $this->assertInstanceOf($expectedInstance, PlatformRequirementFilterFactory::fromBoolOrList($boolOrList));
+    }
+
+    /**
+     * @return array<string, mixed[]>
+     */
+    public function dataFromBoolOrList()
+    {
+        return array(
+            'true creates IgnoreAllFilter' => array(true, 'Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter'),
+            'false creates IgnoreNothingFilter' => array(false, 'Composer\Filter\PlatformRequirementFilter\IgnoreNothingPlatformRequirementFilter'),
+            'list creates IgnoreListFilter' => array(array('php', 'ext-json'), 'Composer\Filter\PlatformRequirementFilter\IgnoreListPlatformRequirementFilter'),
+        );
+    }
+
+    public function testFromBoolThrowsExceptionIfTypeIsUnknown()
+    {
+        $this->setExpectedException('InvalidArgumentException', 'PlatformRequirementFilter: Unknown $boolOrList parameter NULL. Please report at https://github.com/composer/composer/issues/new.');
+
+        PlatformRequirementFilterFactory::fromBoolOrList(null);
+    }
+
+    public function testIgnoreAll()
+    {
+        $platformRequirementFilter = PlatformRequirementFilterFactory::ignoreAll();
+
+        $this->assertInstanceOf('Composer\Filter\PlatformRequirementFilter\IgnoreAllPlatformRequirementFilter', $platformRequirementFilter);
+    }
+
+    public function testIgnoreNothing()
+    {
+        $platformRequirementFilter = PlatformRequirementFilterFactory::ignoreNothing();
+
+        $this->assertInstanceOf('Composer\Filter\PlatformRequirementFilter\IgnoreNothingPlatformRequirementFilter', $platformRequirementFilter);
+    }
+}

tests/Composer/Test/InstallerTest.php

@@ -13,6 +13,7 @@
 namespace Composer\Test;
 
 use Composer\DependencyResolver\Request;
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
 use Composer\Installer;
 use Symfony\Component\Console\Application;
 use Symfony\Component\Console\Command\Command;
@@ -340,7 +341,7 @@ class InstallerTest extends TestCase
             $installer
                 ->setDevMode(!$input->getOption('no-dev'))
                 ->setDryRun($input->getOption('dry-run'))
-                ->setIgnorePlatformRequirements($ignorePlatformReqs);
+                ->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
 
             return $installer->run();
         });
@@ -385,7 +386,7 @@ class InstallerTest extends TestCase
                 ->setUpdateAllowTransitiveDependencies($updateAllowTransitiveDependencies)
                 ->setPreferStable($input->getOption('prefer-stable'))
                 ->setPreferLowest($input->getOption('prefer-lowest'))
-                ->setIgnorePlatformRequirements($ignorePlatformReqs);
+                ->setPlatformRequirementFilter(PlatformRequirementFilterFactory::fromBoolOrList($ignorePlatformReqs));
 
             return $installer->run();
         });

tests/Composer/Test/Package/Version/VersionSelectorTest.php

@@ -12,6 +12,7 @@
 
 namespace Composer\Test\Package\Version;
 
+use Composer\Filter\PlatformRequirementFilter\PlatformRequirementFilterFactory;
 use Composer\Package\Version\VersionSelector;
 use Composer\Package\Package;
 use Composer\Package\Link;
@@ -70,7 +71,7 @@ class VersionSelectorTest extends TestCase
 
         $best = $versionSelector->findBestCandidate($packageName);
         $this->assertSame($package1, $best, 'Latest version supporting php 5.5 should be returned (1.0.0)');
-        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', true);
+        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', PlatformRequirementFilterFactory::ignoreAll());
         $this->assertSame($package2, $best, 'Latest version should be returned when ignoring platform reqs (2.0.0)');
     }
 
@@ -96,7 +97,7 @@ class VersionSelectorTest extends TestCase
 
         $best = $versionSelector->findBestCandidate($packageName);
         $this->assertSame($package1, $best, 'Latest version supporting ext-zip 5.3.0 should be returned (1.0.0)');
-        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', true);
+        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', PlatformRequirementFilterFactory::ignoreAll());
         $this->assertSame($package2, $best, 'Latest version should be returned when ignoring platform reqs (2.0.0)');
     }
 
@@ -121,7 +122,7 @@ class VersionSelectorTest extends TestCase
 
         $best = $versionSelector->findBestCandidate($packageName);
         $this->assertSame($package1, $best, 'Latest version not requiring ext-barfoo should be returned (1.0.0)');
-        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', true);
+        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', PlatformRequirementFilterFactory::ignoreAll());
         $this->assertSame($package2, $best, 'Latest version should be returned when ignoring platform reqs (2.0.0)');
     }
 
@@ -147,7 +148,7 @@ class VersionSelectorTest extends TestCase
 
         $best = $versionSelector->findBestCandidate($packageName);
         $this->assertSame($package1, $best, 'Latest version supporting composer 1 should be returned (1.0.0)');
-        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', true);
+        $best = $versionSelector->findBestCandidate($packageName, null, 'stable', PlatformRequirementFilterFactory::ignoreAll());
         $this->assertSame($package2, $best, 'Latest version should be returned when ignoring platform reqs (1.1.0)');
     }