How to install using yarn2?

[maxhq]

I am using Yarn 2.4.0 (npm install yarn -g then yarn set version berry).
When trying to install Fomantic UI it exits with the error log below.
Does anybody have a hint for me on what to do?

# This file contains the result of Yarn building a package (fomantic-ui@npm:2.8.7)
# Script name: install

Error: accord tried to access less, but it isn't declared in its dependencies; this makes the require call ambiguous and unsound.

Required package: less (via "less")
Required by: accord@npm:0.29.0 (via /myproject/.yarn/cache/accord-npm-0.29.0-8d04d735d9-35da3a2ad9.zip/node_modules/accord/lib/)

Require stack:
- /myproject/.yarn/cache/accord-npm-0.29.0-8d04d735d9-35da3a2ad9.zip/node_modules/accord/lib/index.js
- /myproject/.yarn/cache/gulp-less-npm-4.0.1-1ef6749c7a-94f0442915.zip/node_modules/gulp-less/index.js
- /myproject/.yarn/unplugged/fomantic-ui-npm-2.8.7-e6c1097f3b/node_modules/fomantic-ui/tasks/build/css.js
- /myproject/.yarn/unplugged/fomantic-ui-npm-2.8.7-e6c1097f3b/node_modules/fomantic-ui/tasks/watch.js
- /myproject/.yarn/unplugged/fomantic-ui-npm-2.8.7-e6c1097f3b/node_modules/fomantic-ui/tasks/collections/build.js
- /myproject/.yarn/unplugged/fomantic-ui-npm-2.8.7-e6c1097f3b/node_modules/fomantic-ui/gulpfile.js
- /myproject/.yarn/cache/gulp-cli-npm-2.3.0-acd3fcd6e3-e18372ad74.zip/node_modules/gulp-cli/lib/shared/require-or-import.js
- /myproject/.yarn/cache/gulp-cli-npm-2.3.0-acd3fcd6e3-e18372ad74.zip/node_modules/gulp-cli/lib/versioned/^4.0.0/index.js
- /myproject/.yarn/cache/gulp-cli-npm-2.3.0-acd3fcd6e3-e18372ad74.zip/node_modules/gulp-cli/index.js
- /myproject/.yarn/cache/gulp-npm-4.0.2-56726bdf31-e5bcf52e21.zip/node_modules/gulp/bin/gulp.js
    at internalTools_makeError (/myproject/.pnp.js:16969:34)
    at resolveToUnqualified (/myproject/.pnp.js:17934:23)
    at resolveRequest (/myproject/.pnp.js:18026:29)
    at Object.resolveRequest (/myproject/.pnp.js:18104:26)
    at Function.external_module_.Module._resolveFilename (/myproject/.pnp.js:17202:34)
    at Function.resolve (node:internal/modules/cjs/helpers:98:19)
    at resolve_engine_path (/myproject/.yarn/cache/accord-npm-0.29.0-8d04d735d9-35da3a2ad9.zip/node_modules/accord/lib/index.js:65:18)
    at Object.exports.load (/myproject/.yarn/cache/accord-npm-0.29.0-8d04d735d9-35da3a2ad9.zip/node_modules/accord/lib/index.js:25:19)
    at Object.<anonymous> (/myproject/.yarn/cache/gulp-less-npm-4.0.1-1ef6749c7a-94f0442915.zip/node_modules/gulp-less/index.js:9:29)
    at Module._compile (node:internal/modules/cjs/loader:1108:14)

[maxhq]

A workaround for the above problem of undeclared dependencies is to add this to your .yarnrc.yml:

# ...
packageExtensions:
  accord@*:
    dependencies:
      less: "^3.0.0"
  fomantic-ui@*:
    dependencies:
      browserslist: "^4.16.1"