General changes

Host and Build profiles

Use always build and host profiles.

Conan 1.x uses one profile by default, to start using two profiles, please do the following:

• Pass -pr:b=default in the command line to most commands.

• Or set the variable core:default_build_profile=default at the global.conf file to apply it always, automatically.

Do not use os_build, arch_build anywhere in your recipes or code.

• Revisions

Conan 2.0 uses revisions by default and the local cache 2.0 will store multiple recipe and package revisions for your Conan packages (Conan 1.X supports only one revision). To start working with revisions enabled in Conan 1.X, please enable them in your Conan configuration:

$ conan config set general.revisions_enabled=True

Lowercase references

Move all your packages to lowercase. Uppercase package names (or versions/user/channel) will not be allowed in 2.0.

Default Package ID mode

Work in progress

Compatible packages

Work in progress

Extensions

Work in progress