WP-CLI has organically evolved into a monolithic codebase that can now be abstracted to a set of discrete packages. In order to better support a future with lots of disparate WP-CLI features, let's split internal commands into a series of distinct packages, beginning with:

• wp search-replace
• wp shell
• wp server
• wp (eval|eval-file)
• wp media

When we split the packages, we should:

• Preserve Git history
• Mirror Travis' test suite matrix in the package

Previously: #3652 (comment)

Does it mean that we will be able to build smaller phar-s?

Does it mean that we will be able to build smaller phar-s?

No — the Phar will still contain these commands for the foreseeable future.