Problems using composer to install plugins

[mwoodpatrick]

Running

COMPOSER=composer-public.json composer update

I get:

Loading composer repositories with package information Updating dependencies Your requirements could not be resolved to an installable set of packages.

Problem 1

• dealerdirect/phpcodesniffer-composer-installer v0.5.0 requires composer-plugin-api ^1.0 -> found composer-plugin-api[2.0.0] but it does not match the constraint.
• webdevstudios/php-coding-standards 1.3.0 requires dealerdirect/phpcodesniffer-composer-installer ^0.5.0 -> satisfiable by dealerdirect/phpcodesniffer-composer-installer[v0.5.0].
• Root composer.json requires webdevstudios/php-coding-standards ^1.3 -> satisfiable by webdevstudios/php-coding-standards[1.3.0].

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

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.

[gregrickaby]

@mwoodpatrick Sorry for the trouble (and the delay in my response).

Can you try running:

composer self-update --1 && COMPOSER=composer-public.json composer update

Also, I've updated the documentation to mention using Composer v1.