Changing PHP version disables extensions on self hosted runners

[Tjitse-E]

Describe the bug

1. Create a single self hosted runner
2. Run a workflow with PHP 7.4 on that runner
3. Try to require a composer dependency that requires a PHP extension (examples: GD, SOAP BCMATH)
4. Run a workflow with PHP 8.1 on that runner
5. Require the same composer dependency again
6. Now you will get an error, the PHP extensions that are required are disabled..

Version

• I have checked releases, and the bug exists in the latest patch version of v1 or v2.
• v2
• v1

Runners

• GitHub Hosted
• Self Hosted

Operating systems
Ubuntu Focal

PHP versions
I tested with PHP 7.4 and PHP 8.1

To Reproduce
Try once with PHP 7.4 and once with PHP 8.1 using the same runner.

      - name: Setup PHP with PECL extension
        uses: shivammathur/setup-php@v2
        with:
          coverage: none
          php-version: ${{ env.PHP_VERSION }}
          tools: composer:v2
          extensions: gd, bcmath, soap, pdo_mysql, ctype, curl, dom, hash, iconv, intl, mbstring, openssl, simplexml, xsl, sockets, zip
        env:
          runner: self-hosted
          update: true

      - name: Install composer dependencies
        run: |
          composer install --prefer-dist --no-interaction

Expected behavior
The soap, bcmath and gd PHP extensions are enabled on both PHP 7.4 and PHP 8.1

Screenshots/Logs
On the second run you will get the following error:

Error: Your lock file does not contain a compatible set of packages. Please run composer update.

  Problem 1
    - laminas/laminas-soap is locked to version 2.10.0 and an update of this package was not requested.
    - laminas/laminas-soap 2.10.0 requires ext-soap * -> it is missing from your system. Install or enable PHP's soap extension.
  Problem 2
    - magento/framework is locked to version 103.0.4-p1 and an update of this package was not requested.
    - magento/framework 103.0.4-p1 requires ext-bcmath * -> it is missing from your system. Install or enable PHP's bcmath extension.
  Problem 3
    - magento/module-shipping is locked to version 100.4.4 and an update of this package was not requested.
    - magento/module-shipping 100.4.4 requires ext-gd * -> it is missing from your system. Install or enable PHP's gd extension.
  Problem 4
    - magento/product-community-edition is locked to version 2.4.4-p1 and an update of this package was not requested.
    - magento/product-community-edition 2.4.4-p1 requires ext-bcmath * -> it is missing from your system. Install or enable 

To enable extensions, verify that they are enabled in your .ini files:
    - /etc/php/8.1/cli/php.ini
    - /etc/php/8.1/cli/conf.d/10-***nd.ini
    - /etc/php/8.1/cli/conf.d/10-opcache.ini
    - /etc/php/8.1/cli/conf.d/10-pdo.ini
    - /etc/php/8.1/cli/conf.d/15-xml.ini
    - /etc/php/8.1/cli/conf.d/20-calendar.ini
    - /etc/php/8.1/cli/conf.d/20-ctype.ini
    - /etc/php/8.1/cli/conf.d/20-curl.ini
    - /etc/php/8.1/cli/conf.d/20-dom.ini
    - /etc/php/8.1/cli/conf.d/20-exif.ini
    - /etc/php/8.1/cli/conf.d/20-ffi.ini
    - /etc/php/8.1/cli/conf.d/20-fileinfo.ini
    - /etc/php/8.1/cli/conf.d/20-ftp.ini
    - /etc/php/8.1/cli/conf.d/20-gettext.ini
    - /etc/php/8.1/cli/conf.d/20-iconv.ini
    - /etc/php/8.1/cli/conf.d/20-intl.ini
    - /etc/php/8.1/cli/conf.d/20-mbstring.ini
    - /etc/php/8.1/cli/conf.d/20-***i.ini
    - /etc/php/8.1/cli/conf.d/20-pdo_***.ini
    - /etc/php/8.1/cli/conf.d/20-pdo_pgsql.ini
    - /etc/php/8.1/cli/conf.d/20-pgsql.ini
    - /etc/php/8.1/cli/conf.d/20-phar.ini
    - /etc/php/8.1/cli/conf.d/20-posix.ini
    - /etc/php/8.1/cli/conf.d/20-readline.ini
    - /etc/php/8.1/cli/conf.d/20-shmop.ini
    - /etc/php/8.1/cli/conf.d/20-simplexml.ini
    - /etc/php/8.1/cli/conf.d/20-sockets.ini
    - /etc/php/8.1/cli/conf.d/20-sysvmsg.ini
    - /etc/php/8.1/cli/conf.d/20-sysvsem.ini
    - /etc/php/8.1/cli/conf.d/20-sysvshm.ini
    - /etc/php/8.1/cli/conf.d/20-tokenizer.ini
    - /etc/php/8.1/cli/conf.d/20-xmlreader.ini
    - /etc/php/8.1/cli/conf.d/20-xmlwriter.ini
    - /etc/php/8.1/cli/conf.d/20-xsl.ini
    - /etc/php/8.1/cli/conf.d/20-zip.ini
    - /etc/php/8.1/cli/conf.d/99-pecl.ini
    - 

Additional context

Are you willing to submit a PR?

[shivammathur]

@Tjitse-E
Thanks for reporting this. I will have a look this weekend.

[shivammathur]

Fixed in 7aff4d7
Test workflow: https://github.com/shivammathur/test-setup-php/actions/runs/3030342518/workflow

[Tjitse-E]

Fixed in 7aff4d7 Test workflow: https://github.com/shivammathur/test-setup-php/actions/runs/3030342518/workflow

@shivammathur great! I just confirmed that this fixes the issue.

[shivammathur]

Released 2.22.0 with the fix.