[needs meta attention] Buck2 build broken by repo sync tooling?

Author: lf-Created Aug 7, 2026Updated Aug 7, 2026

It seems that the external cell configuration for the fbcode shim got deleted in a random dependency upgrade, specifically 02dff33e5b6913cf8e008b65002668d9c30def92.

See history:

https://github.com/facebook/folly/commits/main/.buckconfig.d/external_cells/facebook/buck2-shims-meta/external_cell.buckconfig

As a result:

$ buck2 targets :
Command failed: Error creating cell resolver

Caused by:
    0: Parsing cells
    1: Cell name `buck` should be an alias for an existing cell, but `gh_facebook_buck2_shims_meta` isn't a known alias

Stack backtrace:
   0: <std::backtrace::Backtrace>::create

See also #2247, though this is a more recent and specific problem.

Source: facebook/folly

View original on GitHub View discussion on GitHub