Setting up with existing Magento 2 installation

[ishanrakitha]

I'm trying to setup with Storefront mode. As per the documentation composer update fails with below errors.
Please advise. Appreciate your support in advance.

Ubuntu 20.4
PHP 7.4.26
Magento Version: 2.4.3

composer update in backend root

Thank you.

[ishanrakitha]

When downgraded to PHP 7.2

[ishanrakitha]

Received the below output for the following.

yarn create scandipwa-app my-app
cd my-app
BUILD_MODE=magento npm run build

Executing the following from Magento root folder;

composer config repo.theme path localmodules/my-app
composer require scandipwa/my-app

Output

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

  Problem 1
    - scandipwa/performance[1.2.0, ..., 1.5.5] require magento/module-inventory-api * -> could not be found in any version, there may be a typo in the package name.
    - scandipwa/my-app 0.0.1 requires scandipwa/performance 1.5.5 -> satisfiable by scandipwa/performance[1.5.5].
    - Root composer.json requires scandipwa/my-app ^0.0.1 -> satisfiable by scandipwa/my-app[0.0.1].

Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your minimum-stability setting
   see <https://getcomposer.org/doc/04-schema.md#minimum-stability> for more details.
 - It's a private package and you forgot to add a custom repository to find it

Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.
You can also try re-running composer require with an explicit version constraint, e.g. "composer require scandipwa/my-app:*" to figure out if any version is installable, or "composer require scandipwa/my-app:^2.1" if you know which you need.

Installation failed, reverting ./composer.json and ./composer.lock to their original content.

[ishanrakitha]

Getting the same with the Master branch as well.

Please advise.

Magento ver. dev-2.4-develop

Thank you.