Error with PHP 8.0-dev and Composer 2.0.0

[sebastianbergmann]

Running Composer 2.0.0 with PHP 8.0-dev results in:

$ ./tools/composer update --no-ansi --no-interaction --no-progress
PHP Warning:  require_once(phar:///home/runner/work/exporter/exporter/tools/composer/vendor/symfony/polyfill-mbstring/Resources/mb_convert_variables.php8): Failed to open stream: phar error: "vendor/symfony/polyfill-mbstring/Resources/mb_convert_variables.php8" is not a file in phar "/home/runner/work/exporter/exporter/tools/composer" in phar:///home/runner/work/exporter/exporter/tools/composer/vendor/symfony/polyfill-mbstring/bootstrap.php on line 115
PHP Fatal error:  Uncaught Error: Failed opening required 'phar:///home/runner/work/exporter/exporter/tools/composer/vendor/symfony/polyfill-mbstring/Resources/mb_convert_variables.php8' (include_path='.:/usr/local/php/8.0/share/pear') in phar:///home/runner/work/exporter/exporter/tools/composer/vendor/symfony/polyfill-mbstring/bootstrap.php:115
Stack trace:
#0 phar:///home/runner/work/exporter/exporter/tools/composer/vendor/composer/autoload_real.php(69): require()
#1 phar:///home/runner/work/exporter/exporter/tools/composer/vendor/composer/autoload_real.php(59): composerRequireComposerPhar1603530979()
#2 phar:///home/runner/work/exporter/exporter/tools/composer/vendor/autoload.php(7): ComposerAutoloaderInitComposerPhar1603530979::getLoader()
#3 phar:///home/runner/work/exporter/exporter/tools/composer/src/bootstrap.php(15): include('...')
#4 phar:///home/runner/work/exporter/exporter/tools/composer/src/bootstrap.php(18): includeIfExists()
#5 phar:///home/runner/work/exporter/exporter/tools/composer/bin/composer(8): require('...')
#6 /home/runner/work/exporter/exporter/tools/composer(24): require('...')
#7 {main}
  thrown in phar:///home/runner/work/exporter/exporter/tools/composer/vendor/symfony/polyfill-mbstring/bootstrap.php on line 115

[beberlei]

Came here to say the same :-)

https://github.com/doctrine/annotations/pull/372/checks?check_run_id=1301958168

[Seldaek]

.php8 😱 I thought we stopped doing this since php4 or something.

I also see that this is only a problem in symfony/polyfill-mbstring 1.19.0 to which I upgraded just before the release... Obviously this "inconsequential" update had to mess things up.

@nicolas-grekas any clue when the next release is planned? Or should I rather switch to dev-main?

[nicolas-grekas]

To make a release, we'd need to do a change before :)
What would be the change about? Why is this file not in the phar?

[Seldaek]

The file is not in the phar because we only include .php files, because the rest is supposedly useless. And symfony/polyfill-mbstring@39d483b already got rid of that file, that's why I ask :)

[sebastianbergmann]

I learned a similar lesson not too long ago ;) Since then, we do not only run the regular tests for PHPUnit but also build the PHAR and run additional tests to ensure that it works.

[nicolas-grekas]

But that commit also bumped the minimum version of PHP to 7.1, and I suppose you want your phar to run on php 5.3?
Better build a new phar imho...

[Seldaek]

@nicolas-grekas Right, ok yeah will fix this on our end then.. Thanks.

@sebastianbergmann we actually do build a phar and run an install from it as part of CI AFAIK, but I guess we do have mbstring enabled and you don't or some such bad luck event..

[Seldaek]

Composer snapshot should now be fixed.. I gotta go for a while, can do a release later today.

[shivammathur]

I have patched phars setup-php uses. So please re-run your workflows if you got this error.

[ondrejmirtes]

Thanks to everyone involved, you're awesome 👍 :)

[Seldaek]

@shivammathur that's awesome, then I don't have to do a release so soon, I doubt anyone uses php8 much outside CI..

[GrahamCampbell]

People using other CI systems like travis will still be affected. Travis runs composer self-update which will result in composer 2.0.0 being installed.

[Seldaek]

2.0.1 is out now, with proper future proof fix so such accidents should hopefully not happen anymore.

[LeRoyJulian]

Just upgraded PHP with Homebrew, I have the same error with the latest Composer version.

[Seldaek]

@LeRoyJulian please report a new issue with details as to what you see.

[LeRoyJulian]

Done #9522