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What should I do if Composer 2.0 is backwards incompatible and causes extension installation errors?

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2021-03-02 15:50:162170browse

The following tutorial column of composer will introduce you to the solution to the extension installation error caused by the backward incompatibility of Composer 2.0. I hope it will be helpful to friends in need!

Composer 2.0 backwards incompatibility leads to extension installation errors

Recently, when deploying a server environment, I encountered a Issues caused by backward incompatibility of Composer version are recorded.

Problem description

The background Api application is developed using the multi-application mode of ThinkPHP6.0. When initially deployed, it always prompts that it cannot be found. to the controller.

I was quite depressed at the time, why couldn’t I find the controller? This exception usually only occurs when the multi-application mode is not turned on, but the multi-application mode is obviously turned on and the relevant extensions are installed (Composer 2.0.x does not directly throw an exception when executing composer install).

Just when I was puzzled, I accidentally saw that the version of Composer I am currently using is 2.0.x.

I went back and compared it with my local version: 1.8. After searching Google, I discovered that the Composer 2.0 series was only recently released, so I immediately thought whether it was caused by Composer’s backward incompatibility.

Hey guys, it’s really a problem caused by compatibility:

What should I do if Composer 2.0 is backwards incompatible and causes extension installation errors?

Solution

Since it’s a version Compatibility problems caused by excessively high values ​​​​can be easily solved, just lower the version.

Composer downgrading is very simple. There is no need to recompile and install. Just use the following command:

composer self-update 1.8.0

If you don’t know which versions are available, you can check the official release history.

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