New symfony/yaml is breaking PHP 7.x support

[sasannnn]

Sail Version

1.21.0

Laravel Version

8.0

PHP Version

7.4

Operating System

Linux

OS Version

latest

Description

I'm trying to setup a Laravel 8.0 project to use Sail.
I'm stopped cause my PHP version is not new enough even though Sail version is marked to support it.

Steps To Reproduce

Following Laravel 8.0 documentation, installing Laravel sail:

docker run --rm \
         -u "$(id -u):$(id -g)" \
         -v $(pwd):/var/www/html \
         -w /var/www/html \
         laravelsail/php74-composer:latest \
         composer require laravel/sail --dev --ignore-platform-req=ext-gd --ignore-platform-req=ext-exif

Is giving me:

  Problem 1
    - laravel/sail[v1.21.0, ..., 1.x-dev] require symfony/yaml ^6.0 -> satisfiable by symfony/yaml[v6.0.0-BETA1, ..., 6.3.x-dev].
    - symfony/yaml[v6.0.0-BETA1, ..., 6.0.x-dev] require php >=8.0.2 -> your php version (7.4.11) does not satisfy that requirement.
    - symfony/yaml[v6.1.0-BETA1, ..., 6.3.x-dev] require php >=8.1 -> your php version (7.4.11) does not satisfy that requirement.
    - Root composer.json requires laravel/sail ^1.21 -> satisfiable by laravel/sail[v1.21.0, ..., 1.x-dev].

I have similar Laravel projects depending on older versions of Sail. What is different is symfony/yaml enforcing newer PHP version.

[driesvints]

We unfortunately don't provide any support anymore for PHP 7.x and Laravel 8. Please try a support channel:

• Laracasts Forums
• Laravel.io Forums
• StackOverflow
• Discord
• Larachat
• IRC