Problems with composer install

[impshum]

MacOS
PHP 7.4

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Composer version 1.4.1

[ErrorException]                                                                         
"continue" targeting switch is equivalent to "break". Did you mean to use "continue 2"?  

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Composer version 2

Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - oomphinc/composer-installers-extender[v1.1, ..., v1.1.2] require composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
    - Root composer.json requires oomphinc/composer-installers-extender ^1.1 -> satisfiable by oomphinc/composer-installers-extender[v1.1, v1.1.1, v1.1.2].

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.

[nsrosenqvist]

Ok, seems like the composer plugin needs to be updated in order to support Composer 2. Thanks for reporting! Will try and look at this sometime in June.

[impshum]

Best leave this open then...