- Facebook does not use Git due to scale issues with their large monorepo, instead opting for Mercurial.
- Mercurial may be a better option for large monorepos, but Git has made improvements to support them better.
- Despite some drawbacks, Git usage remains dominant with 93.87% share, due to familiarity, additional tools, and industry trends.
I use git daily and still wonder why I had fewer merge issues on a larger team in the 1990s with command line rcs on Solaris. Maybe we were just more disciplined then. I know we were less likely to work on the same file concurrently. I feel like I spend more time fighting the tools than I ever used to. Some of that is because of the dumb decisions that were made on our project a decade or more ago.