Defer Carbon package discovery until it is needed.

Keep Laravel from auto-discovering nesbot/carbon so the app can boot the lazy Carbon provider instead.

app/Providers/LazyCarbonServiceProvider.php

@@ -0,0 +1,98 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Providers;
+
+use Carbon\Carbon;
+use Carbon\CarbonImmutable;
+use Carbon\CarbonInterval;
+use Carbon\CarbonPeriod;
+use Illuminate\Contracts\Events\Dispatcher as DispatcherContract;
+use Illuminate\Foundation\Events\LocaleUpdated;
+use Illuminate\Support\Carbon as IlluminateCarbon;
+use Illuminate\Support\Facades\Date;
+use Illuminate\Support\ServiceProvider;
+use Throwable;
+
+final class LazyCarbonServiceProvider extends ServiceProvider
+{
+    private bool $localeListenerRegistered = false;
+
+    public function register(): void
+    {
+        $registerListener = function (DispatcherContract $events): void {
+            if ($this->localeListenerRegistered) {
+                return;
+            }
+
+            $this->localeListenerRegistered = true;
+
+            $events->listen(
+                LocaleUpdated::class,
+                function (LocaleUpdated $event): void {
+                    $this->synchronizeCarbonLocale($event->locale);
+                }
+            );
+        };
+
+        if ($this->app->resolved('events')) {
+            $registerListener(
+                $this->app->make('events')
+            );
+
+            return;
+        }
+
+        $this->app->afterResolving(
+            'events',
+            $registerListener
+        );
+    }
+
+    private function synchronizeCarbonLocale(string $locale): void
+    {
+        $fallback = (string) $this->app['config']->get(
+            'app.fallback_locale',
+            'en'
+        );
+
+        Carbon::setLocale($locale);
+        CarbonImmutable::setLocale($locale);
+        CarbonPeriod::setLocale($locale);
+        CarbonInterval::setLocale($locale);
+
+        Carbon::setFallbackLocale($fallback);
+        CarbonImmutable::setFallbackLocale($fallback);
+        CarbonPeriod::setFallbackLocale($fallback);
+        CarbonInterval::setFallbackLocale($fallback);
+
+        IlluminateCarbon::setLocale($locale);
+
+        if (
+            method_exists(
+                IlluminateCarbon::class,
+                'setFallbackLocale'
+            )
+        ) {
+            IlluminateCarbon::setFallbackLocale($fallback);
+        }
+
+        try {
+            $date = Date::getFacadeRoot();
+
+            if ($date && method_exists($date, 'setLocale')) {
+                $date->setLocale($locale);
+            }
+
+            if (
+                $date &&
+                method_exists($date, 'setFallbackLocale')
+            ) {
+                $date->setFallbackLocale($fallback);
+            }
+        } catch (Throwable) {
+            // Preserve Carbon provider tolerance for custom Date drivers.
+        }
+    }
+}

bootstrap/providers.php

@@ -4,6 +4,7 @@ return [
     App\Providers\AppServiceProvider::class,
     App\Providers\AuthServiceProvider::class,
     App\Providers\HorizonServiceProvider::class,
+    App\Providers\LazyCarbonServiceProvider::class,
     Klevze\ControlPanel\ServiceProvider::class,
     cPad\Plugins\Artworks\ServiceProvider::class,
     cPad\Plugins\Forum\ServiceProvider::class,

composer.json

@@ -102,7 +102,9 @@
     },
     "extra": {
         "laravel": {
-            "dont-discover": []
+            "dont-discover": [
+                 "nesbot/carbon"
+            ]
         }
     },
     "config": {