Issue #3119017 by Gábor Hojtsy, effulgentsia, catch, daffie: Tests fail with...

Issue #3119017 by Gábor Hojtsy, effulgentsia, catch, daffie: Tests fail with MariaDB 10.2.7, but not 10.3.22

core/lib/Drupal/Core/Database/Install/Tasks.php

@@ -188,7 +188,22 @@ protected function runTestQuery($query, $pass, $fail, $fatal = FALSE) {
    */
   protected function checkEngineVersion() {
     // Ensure that the database server has the right version.
-    if ($this->minimumVersion() && version_compare(Database::getConnection()->version(), $this->minimumVersion(), '<')) {
+    // We append '-AnyName' to the minimum version for comparison purposes, so
+    // that engines that append a package name or other build information to
+    // their version strings still pass. For example, MariaDB might report its
+    // version as '10.2.7-MariaDB' or '10.2.7+maria' or similar.
+    // version_compare() treats '-' and '+' as equivalent, and non-numeric
+    // parts other than conventional stability specifiers (dev, alpha, beta,
+    // etc.) as equal to each other and less than numeric parts and stability
+    // specifiers. In other words, 10.2.7-MariaDB, 10.2.7+maria, and
+    // 10.2.7-AnyName are all equal to each other and less than 10.2.7-alpha.
+    // This means that by appending '-AnyName' for the comparison check, that
+    // alpha and other pre-release versions of the minimum will pass this
+    // check, which isn't ideal; however, people running pre-release versions
+    // of database servers should know what they're doing, whether Drupal warns
+    // them or not.
+    // @see https://www.php.net/manual/en/function.version-compare.php
+    if ($this->minimumVersion() && version_compare(Database::getConnection()->version(), $this->minimumVersion() . '-AnyName', '<')) {
       $this->fail(t("The database server version %version is less than the minimum required version %minimum_version.", ['%version' => Database::getConnection()->version(), '%minimum_version' => $this->minimumVersion()]));
     }
   }