Error installing this package on Laravel 5.8 (clunky workaround included...can we fix the package?)

[connecteev]

Error installing this package on Laravel 5.8 (clunky workaround included...can we fix the package?)

Followed the instructions in the README and it just refused to work. This is what I had (at first) in my composer.json:

    "require": {
        "php": "^7.1.3",
        "bogardo/mailgun": "^5.1",
        "guzzlehttp/guzzle": "^6.3",
        "laravel/framework": "5.8.*",
        "laravel/tinker": "^1.0"
    },

On running the commands in the https://github.com/Bogardo/Mailgun#http-client-dependency section, I saw this error:

OneStepAtATime:kb_skins kunalpunjabi$ composer require php-http/guzzle6-adapter
Using version ^2.0 for php-http/guzzle6-adapter
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Conclusion: don't install php-http/guzzle6-adapter v2.0.1
    - Conclusion: don't install php-http/guzzle6-adapter v2.0.0
    - Conclusion: remove php-http/httplug v1.1.0
    - Installation request for php-http/guzzle6-adapter ^2.0 -> satisfiable by php-http/guzzle6-adapter[2.x-dev, v2.0.0, v2.0.1].
    - Conclusion: don't install php-http/httplug v1.1.0
    - php-http/guzzle6-adapter 2.x-dev requires php-http/httplug ^2.0 -> satisfiable by php-http/httplug[2.0.x-dev, v2.0.0].
    - Can only install one of: php-http/httplug[2.0.x-dev, v1.1.0].
    - Can only install one of: php-http/httplug[v2.0.0, v1.1.0].
    - Installation request for php-http/httplug (locked at v1.1.0) -> satisfiable by php-http/httplug[v1.1.0].

Installation failed, reverting ./composer.json to its original content.

I then did the following (actually tried several things, the one below is what actually worked):

    "require": {
        "php": "^7.1.3",
        "bogardo/mailgun": "^5.1",
        "php-http/guzzle6-adapter": "^1.1",
        "laravel/framework": "5.8.*",
        "laravel/tinker": "^1.0"
    },

    "repositories": {
        "vesper8/mailgun": {
            "type": "vcs",
            "url": "https://github.com/vesper8/mailgun"
        }
    }

In app/Providers/AppServiceProvider.php:

    public function register()
    {
        //
        $this->app->bind('mailgun.client', function() {
            return \Http\Adapter\Guzzle6\Client::createWithConfig([
                // your Guzzle6 configuration
            ]);
        });
    }

Then ran composer update and was able to "bulk" send emails using:

Route::get('/mail', function () {
	$data = [
		'customer' => 'Kevin P',
		'url' => 'http://laravel.com'
	];

	Mailgun::send('emails.mailgun_test', $data, function($message){
	    $message->to('xyz@domain1.com', 'User One', [
	        'age' => 37, 
	        'city' => 'New York'
	    ])
	    ->subject('Welcome!');
	    $message->to('abc@domain2.com', 'User Two', [
	        'age' => 41,
	        'city' => 'London'
	    ])
	    ->subject('Welcome Back!');
	});
});

Can we fix the package so that we're not reliant on adding this to composer.json:

    "repositories": {
        "vesper8/mailgun": {
            "type": "vcs",
            "url": "https://github.com/vesper8/mailgun"
        }
    }

and also to fix the guzzle issues / install instructions?

        "php-http/guzzle6-adapter": "^1.1",

[connecteev]

Just discovered an even cleaner solution:
Actually don't need this in the composer.json at all:

    "repositories": {
        "vesper8/mailgun": {
            "type": "vcs",
            "url": "https://github.com/vesper8/mailgun"
        }
    }

But php-http/guzzle6-adapter is required:

    "require": {
        "php": "^7.1.3",
        "bogardo/mailgun": "^5.1",
        "php-http/guzzle6-adapter": "^1.1",
        "laravel/framework": "5.8.*",
        "laravel/tinker": "^1.0"
    },