Conan migration guide to 2.0

Conan 2.0-beta is already released, you can install the latest Conan Alpha version from PyPI doing:

$ pip install conan --pre

If you want to migrate to 2.0, there are several things you will need to change:

• The recipes have to be updated to be compatible with Conan 2.0. There are 2.0 features ported to Conan 1.X so you can get a compatible recipe with 2.0 using Conan 1.X.

• The conan commands have also changed, but there are no “compatible” commands introduced in Conan 1.X. We will review the more relevant changes.

• General changes not related to the recipes nor the Conan commands, “build profiles”, lowercase references… etc.

• Migrating the recipes
  • Python import statements
  • Requirements
  • Settings
  • Options
  • The validate() method
  • The layout() method
  • The scm attribute
  • The export_sources() method
  • The generate() method
  • The build() method
  • The package() method
  • The package_info() method
  • The package_id() method
  • Removed imports() method
  • Migrate conanfile.compatible_packages to the new compatibility() method
  • Changes in the test_package recipe
  • Other recipe changes
• Commands
  • Most common commands overview
  • Unified patterns in command arguments
  • Removed “conan package”
  • Removed “conan copy”
  • Custom commands
• General changes
  • Host and Build profiles
  • Lowercase references
  • Default Package ID mode
  • Compatible packages
  • Extensions