minor #40559 [travis] remove cache of composer.lock for deps=low (nicolas-grekas)

This PR was merged into the 4.4 branch.

Discussion
----------

[travis] remove cache of composer.lock for deps=low

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | no
| Deprecations? | no
| Tickets       | -
| License       | MIT
| Doc PR        | -

Let's hope that Composer 2 made this fast enough. Maintaining this script might not be worth it anymore.

Reverts #28146

Commits
-------

9ba015d2 [travis] remove cache of composer.lock for deps=low

.github/rm-invalid-lowest-lock-files.php

-<?php
-
-error_reporting(-1);
-set_error_handler(function ($type, $message, $file, $line) {
-    if (error_reporting() & $type) {
-        throw new \ErrorException($message, 0, $type, $file, $line);
-    }
-});
-array_shift($_SERVER['argv']);
-$dirs = $_SERVER['argv'];
-
-function getRelevantContent(array $composerJson)
-{
-    $relevantKeys = [
-        'name',
-        'require',
-        'require-dev',
-        'conflict',
-        'replace',
-        'provide',
-        'minimum-stability',
-        'prefer-stable',
-        'repositories',
-        'extra',
-    ];
-
-    $relevantContent = [];
-
-    foreach (array_intersect($relevantKeys, array_keys($composerJson)) as $key) {
-        $relevantContent[$key] = $composerJson[$key];
-    }
-    if (isset($composerJson['config']['platform'])) {
-        $relevantContent['config']['platform'] = $composerJson['config']['platform'];
-    }
-
-    return $relevantContent;
-}
-
-function getContentHash(array $composerJson)
-{
-    $relevantContent = getRelevantContent($composerJson);
-    ksort($relevantContent);
-
-    return md5(json_encode($relevantContent));
-}
-
-$composerJsons = [];
-
-foreach ($dirs as $dir) {
-    if (!file_exists($dir.'/composer.lock') || !$composerLock = @json_decode(file_get_contents($dir.'/composer.lock'), true)) {
-        @unlink($dir.'/composer.lock');
-        continue;
-    }
-    if (!file_exists($dir.'/composer.json') || !$composerJson = @json_decode(file_get_contents($dir.'/composer.json'), true)) {
-        echo "$dir/composer.json not found or invalid.\n";
-        @unlink($dir.'/composer.lock');
-        continue;
-    }
-    if (!isset($composerLock['content-hash']) || getContentHash($composerJson) !== $composerLock['content-hash']) {
-        echo "$dir/composer.lock is outdated.\n";
-        @unlink($dir.'/composer.lock');
-        continue;
-    }
-    $composerLock += ['packages' => [], 'packages-dev' => []];
-    $composerJsons[$composerJson['name']] = [$dir, $composerLock['packages'] + $composerLock['packages-dev'], getRelevantContent($composerJson)];
-}
-
-$referencedCommits = [];
-
-foreach ($composerJsons as [$dir, $lockedPackages]) {
-    foreach ($lockedPackages as $lockedJson) {
-        if (0 !== strpos($version = $lockedJson['version'], 'dev-') && '-dev' !== substr($version, -4)) {
-            continue;
-        }
-
-        if (!isset($composerJsons[$name = $lockedJson['name']])) {
-            echo "$dir/composer.lock references missing $name.\n";
-            @unlink($dir.'/composer.lock');
-            continue 2;
-        }
-
-        if (isset($composerJsons[$name][2]['repositories']) && !isset($lockedJson['repositories'])) {
-            // the locked package has been patched locally but the lock references a commit,
-            // which means the referencing package itself is not modified
-            continue;
-        }
-
-        foreach (['minimum-stability', 'prefer-stable'] as $key) {
-            if (array_key_exists($key, $composerJsons[$name][2])) {
-                $lockedJson[$key] = $composerJsons[$name][2][$key];
-            }
-        }
-
-        // use weak comparison to ignore ordering
-        if (getRelevantContent($lockedJson) != $composerJsons[$name][2]) {
-            echo "$dir/composer.lock is not in sync with $name.\n";
-            @unlink($dir.'/composer.lock');
-            continue 2;
-        }
-
-        if ($lockedJson['dist']['reference']) {
-            $referencedCommits[$name][$lockedJson['dist']['reference']][] = $dir;
-        }
-    }
-}
-
-if (!$referencedCommits) {
-    return;
-}
-
-@mkdir($_SERVER['HOME'].'/.cache/composer/repo/https---repo.packagist.org', 0777, true);
-
-$ch = null;
-$mh = curl_multi_init();
-$sh = curl_share_init();
-curl_share_setopt($sh, CURLSHOPT_SHARE, CURL_LOCK_DATA_COOKIE);
-curl_share_setopt($sh, CURLSHOPT_SHARE, CURL_LOCK_DATA_DNS);
-curl_share_setopt($sh, CURLSHOPT_SHARE, CURL_LOCK_DATA_SSL_SESSION);
-$chs = [];
-
-foreach ($referencedCommits as $name => $dirsByCommit) {
-    foreach (['', '~dev'] as $suffix) {
-        $chs[] = $ch = [curl_init(), fopen($_SERVER['HOME'].'/.cache/composer/repo/https---repo.packagist.org/provider-'.strtr($name, '/', '~').$suffix.'.json', 'w')];
-        curl_setopt($ch[0], CURLOPT_URL, 'https://repo.packagist.org/p2/'.$name.$suffix.'.json');
-        curl_setopt($ch[0], CURLOPT_FILE, $ch[1]);
-        curl_setopt($ch[0], CURLOPT_SHARE, $sh);
-        curl_multi_add_handle($mh, $ch[0]);
-    }
-}
-
-do {
-    curl_multi_exec($mh, $active);
-    curl_multi_select($mh);
-} while ($active);
-
-foreach ($chs as [$ch, $fd]) {
-    curl_multi_remove_handle($mh, $ch);
-    curl_close($ch);
-    fclose($fd);
-}
-
-foreach ($referencedCommits as $name => $dirsByCommit) {
-    foreach (['', '~dev'] as $suffix) {
-        $repo = file_get_contents($_SERVER['HOME'].'/.cache/composer/repo/https---repo.packagist.org/provider-'.strtr($name, '/', '~').$suffix.'.json');
-        $repo = json_decode($repo, true);
-
-        foreach ($repo['packages'][$name] as $version) {
-            if (isset($version['source']['reference'])) {
-                unset($referencedCommits[$name][$version['source']['reference']]);
-            }
-        }
-    }
-}
-
-foreach ($referencedCommits as $name => $dirsByCommit) {
-    foreach ($dirsByCommit as $dirs) {
-        foreach ($dirs as $dir) {
-            if (file_exists($dir.'/composer.lock')) {
-                echo "$dir/composer.lock references old commit for $name.\n";
-                @unlink($dir.'/composer.lock');
-            }
-        }
-    }
-}

.travis.yml

@@ -279,11 +279,7 @@ install:
 
               [[ ! $X ]] || (exit 1)
           elif [[ $deps = low ]]; then
-              [[ -e ~/php-ext/composer-lowest.lock.tar ]] && tar -xf ~/php-ext/composer-lowest.lock.tar
-              tar -cf ~/php-ext/composer-lowest.lock.tar --files-from /dev/null
-              php .github/rm-invalid-lowest-lock-files.php $COMPONENTS
-              echo "$COMPONENTS" | parallel --gnu "tfold {} 'cd {} && ([ -e composer.lock ] && ${COMPOSER_UP/update/install} || $COMPOSER_UP --prefer-lowest --prefer-stable) && $PHPUNIT_X'"
-              echo "$COMPONENTS" | xargs -n1 -I{} tar --append -f ~/php-ext/composer-lowest.lock.tar {}/composer.lock
+              echo "$COMPONENTS" | parallel --gnu "tfold {} 'cd {} && $COMPOSER_UP --prefer-lowest --prefer-stable && $PHPUNIT_X'"
           else
               if [[ $PHP = 8.0* ]]; then
                   # add return types before running the test suite