Can't install symfony/maker-bundle

Question

I am new to Symfony, I tried to install symfony/maker-bundle, but it gives me the following error:

Using version ^1.22 for symfony/maker-bundle
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Answer 1

Ocramius is well known for his harsh stance in maintaining backward compatibility.

On this case, release 2.9.0 says:

This release upgrades ocramius/proxy-manager to use composer-runtime-api:^2: this means that you will need composer:^2 to install this version of ProxyManager.

In order to upgrade to composer v2, you can run composer self-update --2 on your development or CI/CD system.

So your options are:

• either upgrade composer to version 2 (composer self-update --2), which is really the recommended way to go unless you have some specific composer plugin that you really need and hasn't been updated to account for the new release.

• Find which package you are installing is the one that requires the proxy-manager (composer why ocramius/proxy-manager), and see if you can adjust your version constraints on that package so that it depends on an older (< 2.9) version of ocramius/proxy-manager. (I mention this option only for completeness sake, but upgrading composer is really the way to go).