Why is the ya build tool asking for a non-existent or undocumented .mapping.json or Arcadia?

[q7k9]

Hi team,

While working with the ya tool and a CMake-based project, I encountered a requirement for a .mapping.json file and the some root of the Arcadia repository.

Could you please explain:

• What is the purpose of this file in the context of ya ?
• Is it required for all builds or only for specific workflows (e.g. code generation, dependency mapping)?
• Are there tools or scripts to generate it automatically?
• Can a minimal example be provided for creating it manually?

Thanks in advance!

[YFMFE]

Maybe this tool isn't designed for the general public or developers, but rather, it's just for Yandex's internal team. There are no successful projects built by yatool; even the yatool team hasn't shown any examples of a successful build for the general developer public.

[YFMFE]

Don't compile outside the yatool folder; you must create your project inside the yatool project itself. Maybe someday the Yandex team will let us compile outside the build source, so we don't have to get permission from Arkady in Israel every time.

[MikailBag]

Our project (github.com/yandex/perforator) uses ya & ymake as its only build system.

I know only one way to start using yatool:

1. Find a project, which already uses yatool (such as this repo)
2. Fork it
3. Remove code, specific for that project (so that only build infrastructure, configs etc remains)
4. Write your code there.

That said, I'm not ya maintainer (and I haven't created new ya-based projects), perhaps there is a better way.