While mercurial being written in python is noted[1] , it is made explicitly clear, its not the reason behind the main selection of Hg as the version control.
"First, git's Windows support is the weakest out of the three DVCSs being considered which is unacceptable as Python needs to support development on any platform it runs on."
This is FUD! The support for git on windows is pretty good and there is nothing obstrusive in it. You can use git on Windows fairly well. Sad to see this kind of comment written by smart people.
Git's Windows support is clearly the weakest since it requires either MinGW or Cygwin. The platform itself is unoptimized for native Windows performance. It may not be terrible but it's certainly the weakest of the DVCSs, as they say.
Last time I tried TortoiseGit, adding a file either didn't work or just crashed hard. Mercurial, on the other hand, just got TortoiseHg 2.0, which is a pleasure to work with.
It is true that git works on Windows, but that doesn't mean it works well.
I've been working on a prject last year which involved a few developers using Windows.
It was a nightmare. Myself using Linux, i had no problem.
But git on Windows..
It'd definitely behind other VCS.
