php -d memory_limit=-1 composer.phar create-project --no-dev --prefer-dist ezsystems/ezplatform ezpublish5 dev-master

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

Problem 1
    - The requested package ezsystems/ezpublish-kernel ~6.2@dev could not be found.
  Problem 2
    - ezsystems/repository-forms v1.1.0-rc1 requires ezsystems/ezpublish-kernel ^6.1 -> no matching package found.
    - ezsystems/repository-forms v1.1.0 requires ezsystems/ezpublish-kernel ^6.1 -> no matching package found.
    - ezsystems/repository-forms 1.2.x-dev requires ezsystems/ezpublish-kernel ~6.3@dev -> no matching package found.
    - Installation request for ezsystems/repository-forms ~1.1@dev -> satisfiable by ezsystems/repository-forms[1.2.x-dev, v1.1.0, v1.1.0-rc1].

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.

Read <https://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.