Flex: Flex breaks composer update

[derrabus]

I currently cannot update any of my Flex-based projects. Even bootstrapping new projects is broken:

$ symfony new test-project
* Creating a new Symfony project with Composer
  (running /usr/local/bin/composer create-project symfony/skeleton test-project)

Installing symfony/skeleton (v4.3.99)
  - Installing symfony/skeleton (v4.3.99): Loading from cache
Created project in test-project
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
  - Installing symfony/flex (v1.4.8): Loading from cache
Symfony operations: 1 recipe (5afac8bbf75e39a95916954b0212edf1)
  - Configuring symfony/flex (>=1.0): From github.com/symfony/recipes:master
Loading composer repositories with package information
Updating dependencies (including require-dev)
PHP Fatal error:  Uncaught Error: Call to a member function getVersions() on null in /Volumes/Projects/Misc/test-project/vendor/symfony/flex/src/Cache.php:118
Stack trace:
#0 /Volumes/Projects/Misc/test-project/vendor/symfony/flex/src/Cache.php(58): Symfony\Flex\Cache->getVersions()
#1 /Volumes/Projects/Misc/test-project/vendor/symfony/flex/src/TruncatedComposerRepository.php(41): Symfony\Flex\Cache->removeLegacyTags(Array)
#2 phar:///usr/local/Cellar/composer/1.9.1/bin/composer/src/Composer/Repository/ComposerRepository.php(358): Symfony\Flex\TruncatedComposerRepository->fetchFile('http://repo.pac...', 'provider-symfon...', '658e184eec78ca5...', false)
#3 /Volumes/Projects/Misc/test-project/vendor/symfony/flex/src/Flex.php(538): Composer\Repository\ComposerRepository->whatProvides(Object(Composer\DependencyResolver\Pool), 'symfony/framewo...', false)
#4 phar:///usr/local/Cellar/composer/1.9.1/bin/composer/src/Composer/DependencyResolver/Pool.php(204): class@anonymous->whatProvides(Object(Composer\DependencyResolver\Pool), 'sy in /Volumes/Projects/Misc/test-project/vendor/symfony/flex/src/Cache.php on line 118

Fatal error: Uncaught Error: Call to a member function getVersions() on null in /Volumes/Projects/Misc/test-project/vendor/symfony/flex/src/Cache.php:118
Stack trace:
#0 /Volumes/Projects/Misc/test-project/vendor/symfony/flex/src/Cache.php(58): Symfony\Flex\Cache->getVersions()
#1 /Volumes/Projects/Misc/test-project/vendor/symfony/flex/src/TruncatedComposerRepository.php(41): Symfony\Flex\Cache->removeLegacyTags(Array)
#2 phar:///usr/local/Cellar/composer/1.9.1/bin/composer/src/Composer/Repository/ComposerRepository.php(358): Symfony\Flex\TruncatedComposerRepository->fetchFile('http://repo.pac...', 'provider-symfon...', '658e184eec78ca5...', false)
#3 /Volumes/Projects/Misc/test-project/vendor/symfony/flex/src/Flex.php(538): Composer\Repository\ComposerRepository->whatProvides(Object(Composer\DependencyResolver\Pool), 'symfony/framewo...', false)
#4 phar:///usr/local/Cellar/composer/1.9.1/bin/composer/src/Composer/DependencyResolver/Pool.php(204): class@anonymous->whatProvides(Object(Composer\DependencyResolver\Pool), 'sy in /Volumes/Projects/Misc/test-project/vendor/symfony/flex/src/Cache.php on line 118

  unable to run /usr/local/bin/composer create-project symfony/skeleton test-project : exit status 255

The cause of this seems to be that https://flex.symfony.com/versions.json is currently sending empty version numbers.

[aurimasniekis]

It brakes everything can do nothing related to compsoer

[aurimasniekis]

Quick fix for everybody who is effected to fix install:

In file: vendor/symfony/flex/src/Cache.php:124

[Taluu]

Would be better imo to do a continue; instead.

[jacquelotjeff]

It works well with "continue;" instruction.

if ($v === '') { continue; }

[fogs]

I am having the exact same issue - only documented it here: https://github.com/symfony/website-skeleton/issues/244

[belendel]

Same issue

[fabpot]

Fixed now.

[derrabus]

That was fast! Thanks a lot.