Not able to update composer.lock file

[micahwalter]

I keep getting this error when trying to update via composer.

Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- The requested package hhvm could not be found in any version, there may be a typo in the package name.

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://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion for more details.

Read http://getcomposer.org/doc/articles/troubleshooting.md for further common problems.

[xyu]

In order to generate a new composer.lock file you will need to either have hhvm installed (Heroku docs) or tell composer to ignore platform dependencies. The latter is easier you can simply use the following command:

$ composer update --ignore-platform-reqs

I've updated the README with this info as well:

2d69545

Thanks for filing an issue for this!

[griffiths]

I'm getting the following message when running composer update --ignore-platform-reqs:

[RuntimeException]
The "--ignore-platform-reqs" option does not exist.

Anyone know how to resolve this? Thank you!

[xyu]

@griffiths try updating composer with composer selfupdate and try again.

[griffiths]

Nice one, thank you!