Going by the posts in the forums[1], it's more that BitKeeper has effectively ceased operations in terms of selling its system.
People have noted multiple times that its current build system is fairly hostile to packaging on *NIX, but nobody seems to be putting in the work and the time. I'm somewhat curious about BitKeeper, but not enough to make my first goal to go down into its guts (complete with a custom stdio from NetBSD with modifications!) to make it play nicely with my system.
Larry McVoy was know for threatening employees of companies using BK and developers of competing VCSs [1], so I understand why so many people wanted to keep away from it.
People have noted multiple times that its current build system is fairly hostile to packaging on *NIX, but nobody seems to be putting in the work and the time. I'm somewhat curious about BitKeeper, but not enough to make my first goal to go down into its guts (complete with a custom stdio from NetBSD with modifications!) to make it play nicely with my system.
[1] https://users.bitkeeper.org/t/thoughts-after-a-few-days-with...