[Composer] Unable to install with Composer 2

[ker0x]

Hello,

When running composer create-project sylius/sylius-standard MyFirstShop I got this error:

Creating a "sylius/sylius-standard" project at "./MyFirstShop"
Installing sylius/sylius-standard (v1.8.0)
  - Installing sylius/sylius-standard (v1.8.0): Extracting archive
Created project in /home/ker0x/dev/MyFirstShop
Installing dependencies from lock file (including require-dev)
Verifying lock file contents can be installed on current platform.
Your lock file does not contain a compatible set of packages. Please run composer update.

  Problem 1
    - ocramius/package-versions is locked to version 1.5.1 and an update of this package was not requested.
    - ocramius/package-versions 1.5.1 requires composer-plugin-api ^1.0.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
  Problem 2
    - ocramius/package-versions 1.5.1 requires composer-plugin-api ^1.0.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
    - symplify/easy-coding-standard v8.1.19 requires ocramius/package-versions ^1.4 -> satisfiable by ocramius/package-versions[1.5.1].
    - symplify/easy-coding-standard is locked to version v8.1.19 and an update of this package was not requested.

ocramius/package-versions only provides support for Composer 2 in 1.8+, which requires PHP 7.4.
If you can not upgrade PHP you can require composer/package-versions-deprecated to resolve this with PHP 7.0+.

You are using Composer 2, which some of your plugins seem to be incompatible with. Make sure you update your plugins or report a plugin-issue to ask them to support Composer 2.

PHP version: 7.4.11
Composer version: 2.0.2
Ubuntu version: Ubuntu 20.04.1 LTS

[arjanfrans]

You have to run composer update. However, after updating I got another problem:

[2020-11-03 13:00:30] request.CRITICAL: Exception thrown when handling an exception (Symfony\Component\Config\Exception\LoaderLoadException: Cannot find a field on 'App\Entity\Channel\ChannelPricing' that is mapped to column 'channelCode'. Either the field does not exist or an association exists but it has multiple join columns in . (which is being imported from "/var/www/app/vendor/sylius/sylius/src/Sylius/Bundle/ApiBundle/Resources/config/routing.yml"). Make sure there is a loader supporting the "api_platform" type. at /var/www/app/vendor/symfony/config/Loader/FileLoader.php line 180) {"exception":"[object] (Symfony\\Component\\Config\\Exception\\LoaderLoadException(code: 0): Cannot find a field on 'App\\Entity\\Channel\\ChannelPricing' that is mapped to column 'channelCode'. Either the field does not exist or an association exists but it has multiple join columns in . (which is being imported from \"/var/www/app/vendor/sylius/sylius/src/Sylius/Bundle/ApiBundle/Resources/config/routing.yml\"). Make sure there is a loader supporting the \"api_platform\" type. at /var/www/app/vendor/symfony/config/Loader/FileLoader.php:180, Doctrine\\ORM\\Mapping\\MappingException(code: 0): Cannot find a field on 'App\\Entity\\Channel\\ChannelPricing' that is mapped to column 'channelCode'. Either the field does not exist or an association exists but it has multiple join columns. at /var/www/app/vendor/doctrine/orm/lib/Doctrine/ORM/Mapping/MappingException.php:621)"} []

Can you try to update composer, and see if it works?

[ker0x]

Running composer update solved the first issue, but same as you, I got this error too:

Executing script cache:clear [KO]
 [KO]
Script cache:clear returned with error code 1
!!  
!!   // Clearing the cache for the dev environment with debug                       
!!   // true                                                                        
!!  
!!  
!!  In FileLoader.php line 180:
!!                                                                                 
!!    Cannot find a field on 'App\Entity\Channel\ChannelPricing' that is mapped t  
!!    o column 'channelCode'. Either the field does not exist or an association e  
!!    xists but it has multiple join columns in . (which is being imported from "  
!!    /home/ker0x/dev/sylius-standard/vendor/sylius/sylius/src/Sylius/Bundle/ApiB  
!!    undle/Resources/config/routing.yml"). Make sure there is a loader supportin  
!!    g the "api_platform" type.                                                   
!!                                                                                 
!!  
!!  In MappingException.php line 621:
!!                                                                                 
!!    Cannot find a field on 'App\Entity\Channel\ChannelPricing' that is mapped t  
!!    o column 'channelCode'. Either the field does not exist or an association e  
!!    xists but it has multiple join columns.                                      
!!                                                                                 
!!  

[arjanfrans]

For now I just downgraded to composer 1: composer self-update --1

[lchrusciel]

Hey folks,

one issue is done by ocramius/package-version and it is not we can do much about, or we need more information, but #428 will solve this issue. Database error should be fixed with: https://github.com/Sylius/Sylius/releases/tag/v1.8.4

[lchrusciel]

Can you test with the new Sylius-Standard release? https://github.com/Sylius/Sylius-Standard/releases/tag/v1.8.1

[ker0x]

Hello @lchrusciel

The new release fix the issue, I was able to fully create a project 👍

[lchrusciel]

I'm glad to hear that :D