What kind of RCS is used always depends on the organisation. We are actually using GIT and SVN, and both make sense for the departments that are using them.
this post was submitted on 18 Jul 2024
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Serious question, why do they use SVN, as in what does SVN better than Git for the department using it?
While I'm not using it, since we started our small-team hobby project in git and moving away from it would be a bother, there is one use-case of SVN that would save us a lot of headaches.
SVN being centralized means you can lock files. Merging Unity scenes together is really pain, the tooling mostly doesn't work properly and you have no way how to quickly check that nothing was lost. Usually, with several people working on a scene, it resulted in us having to decide whose work we will scratch and he will do it again, because merging it wouldn't work properly and you end up in a situation where two people each did hundreds or thousands of changes to a scene, you know that the Unity mergetool is wonky at best, and checking that all of those changes merged properly would take longer and be more error prone than simply copying one persons work over the other.
We resorted to simply asking in chat if anyone has any uncommited work, but with SVN (or any other centralized VSC, I suppose) we wouldn't have to bother with that - you simply lock the scene file and be safe.
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Because we always used it!
The manager likes it.
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Mercurial does have a few things going for it, though for most use-cases it's behind Git in almost all metrics.
I really do like the fact that it keeps a commit number counter, it's a lot easier to know if "commit 405572" is newer than "commit 405488" after all, instead of Git's "commit ea43f56" vs "commit ab446f1". (Though Git does have the describe format, which helps somewhat in this regard. E.g. "0.95b-4204-g1e97859fb" being the 4204th commit after tag 0.95b)
I suspect rebasing makes sequential commit IDs not really work in practice.
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I'm pleased to report that git has made significant strides, and git submodule can now be easily used to achieve a mono-repo-like level of painful jankiness.
Facebook uses Mercurial, but when people praise their developer tooling it's not just that. They're using their CLI which is built on top of Mercurial but cleans up its errors and commands further, it's all running on their own virtual filesystem (EdenFS), their dev testing in a customized version of chromium, and they sync code using their own in-house equivalent of GitHub, and all of it connects super nicely into their own customized version of VS Codium.
Damn that sounds sick
What you can do with 84000 employees
And some good management. Probably not a common opinion around here, but my company is not a tenth of that size, with a hundredth the number of devs, yet different teams still end up copy pasting libraries. Because it's faster than convincing management DevOps is important.
And kinda horrifying. If something goes wrong, no Google, it's straight to IT
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The source control was so smooth and pleasant that it convinced me that git isn't the be all end all, and the general developer focus was super nice, but some of that tooling was pretty janky, poorly documented, and you had no stack overflow to fall back on. And some of it (like EdenFS), really felt like it was the duct tape holding that overloaded monorepo together (complete with all the jankiness of a duct tape solution).
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