Can't install on eZ Plaform 2.4

[arodeus]

In Solver.php line 239:

Problem 1

• The requested package ezsystems/ezpublish-kernel could not be found in any version, there may be a typo in the package name.
  Problem 2
• Installation request for ezsystems/cookbook-bundle ^1.0@dev -> satisfiable by ezsystems/cookbook-bundle[1.0.x-dev].
• ezsystems/cookbook-bundle 1.0.x-dev requires ezsystems/ezpublish-kernel ^5.4.10 || ^6.7 || ^7.0 -> no matching package found.
  Problem 3
• Installation request for ezsystems/ez-support-tools ^0.2@dev -> satisfiable by ezsystems/ez-support-tools[0.2.x-dev].
• ezsystems/ez-support-tools 0.2.x-dev requires ezsystems/ezpublish-kernel ^6.2 || ^7.0 -> no matching package found.
  Problem 4
• Installation request for ezsystems/ezplatform-admin-ui ^1.4@dev -> satisfiable by ezsystems/ezplatform-admin-ui[1.4.x-dev].
• ezsystems/ezplatform-admin-ui 1.4.x-dev requires ezsystems/ezpublish-kernel ^7.4@dev -> no matching package found.
  Problem 5
• Installation request for ezsystems/ezplatform-design-engine ^2.0@dev -> satisfiable by ezsystems/ezplatform-design-engine[2.0.x-dev].
• ezsystems/ezplatform-design-engine 2.0.x-dev requires ezsystems/ezpublish-kernel ^6.0.0|^7.0 -> no matching package found.
  Problem 6
• Installation request for ezsystems/ezplatform-http-cache ~0.8@dev -> satisfiable by ezsystems/ezplatform-http-cache[0.9.x-dev].
• ezsystems/ezplatform-http-cache 0.9.x-dev requires ezsystems/ezpublish-kernel ^6.13.4@dev || ^7.2@dev -> no matching package found.
  Problem 7
• Installation request for ezsystems/ezplatform-richtext ^1.0@dev -> satisfiable by ezsystems/ezplatform-richtext[1.0.x-dev].
• ezsystems/ezplatform-richtext 1.0.x-dev requires ezsystems/ezpublish-kernel ^7.4@dev -> no matching package found.
  Problem 8
• Installation request for ezsystems/ezplatform-solr-search-engine ^1.5.4@dev -> satisfiable by ezsystems/ezplatform-solr-search-engine[1.5.x-dev].
• ezsystems/ezplatform-solr-search-engine 1.5.x-dev requires ezsystems/ezpublish-kernel ~6.7.7@dev|^6.12.1@dev|^7.0@dev -> no matching package found.
  Problem 9
• Installation request for ezsystems/ezplatform-standard-design ^0.1@dev -> satisfiable by ezsystems/ezplatform-standard-design[0.1.x-dev].
• ezsystems/ezplatform-standard-design 0.1.x-dev requires ezsystems/ezpublish-kernel ^7.0 -> no matching package found.
  Problem 10
• Installation request for ezsystems/legacy-bridge ^2.0 -> satisfiable by ezsystems/legacy-bridge[v2.0.10].
• ezsystems/legacy-bridge v2.0.10 requires ezsystems/ezpublish-kernel ^7.0@dev -> no matching package found.
  Problem 11
• Installation request for ezsystems/repository-forms ^2.4@dev -> satisfiable by ezsystems/repository-forms[2.4.x-dev].

• ezsystems/repository-forms 2.4.x-dev requires ezsystems/ezpublish-kernel ^7.0@dev -> no matching package found.

  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.
  • It's a private package and you forgot to add a custom repository to find it

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

[emodric]

Can you share your composer.json and a command you used to install?