Implement basic flavor support

internal/wisski/ingredient/php/extras/settings.php

@@ -10,7 +10,7 @@ function get_setting($name) {
 /** sets a setting in 'settings.php' */
 function set_setting(string $name, mixed $value): bool {
     // find settings.php
-    $filename = DRUPAL_ROOT . "/" . \Drupal::service("site.path") . "/settings.php";
+    $filename = DRUPAL_ROOT . "/" . \Drupal::getContainer()->getParameter("site.path") . "/settings.php";
 
     // setup user write permissions for the file
     $old = fileperms($filename);

internal/wisski/ingredient/php/extras/version.go

@@ -0,0 +1,37 @@
+package extras
+
+import (
+	"context"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/phpx"
+	"github.com/FAU-CDI/wisski-distillery/internal/status"
+	"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient"
+	"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient/php"
+
+	_ "embed"
+)
+
+// Version implements reading the current drupal version
+type Version struct {
+	ingredient.Base
+	dependencies struct {
+		PHP *php.PHP
+	}
+}
+
+// Get returns the currently active theme
+func (v *Version) Get(ctx context.Context, server *phpx.Server) (version string, err error) {
+	err = v.dependencies.PHP.EvalCode(
+		ctx, server, &version, "return Drupal::VERSION; ",
+	)
+	return
+}
+
+func (v *Version) Fetch(flags ingredient.FetcherFlags, info *status.WissKI) (err error) {
+	if flags.Quick {
+		return
+	}
+
+	info.DrupalVersion, _ = v.Get(flags.Context, flags.Server)
+	return
+}