Yeah, its more just extensions to support their use cases at scale. Think of it more as bleeding edge ocmal, once they work out kinks/concerns they'll get merged back into the language OR if it remains ultra specific it'll stay in oxcaml.
Not a complete own version lol
The main user has been writing extensions to the compiler that they test before pushing for integration like they have done for the past twenty years or so. They publish these versions since last year.
Hardly a failure and certainly not something mandatory to keep things from failing over. Your initial comment is extremely disingenuous.
Python gets forked in other investment banks as well. I wouldn’t say that is evidence of any deficiencies, rather they just want to deal with their own idiosyncrasies.