MImilesrout·Mar 22, 2017
Taking each of those in turn:
The first question is an issue because of Stack assuming something about how git works that might not be true on your system. That's probably because you have an old version of git installed. I had a similarish issue on Gentoo, where it assumes something about gcc that isn't true in the version of gcc I have installed. That's a bug in stack, it's not really Windows-specific. Try uninstalling git, installing the latest version of git, or something like that.
Your second question has nothing to do with Windows. The issue is that when one installs packages globally (as you are doing with cabal in your question), you get into issues if you have two incompatible packages. For example, you want stylish-haskell<0.6 for hfmt, and stylish-haskell requires directory<1.3, but you have 1.3 installed (because of another p
Read the rest
ackage).
That's called 'cabal hell'. It's basically just dependency hell for Haskell. It was common in Python before virtualenv became popular, and common in Haskell before stack became popular. In fact, a big reason for using stack is to make it easier for people new to Haskell, and people on Windows, and in particular people new to Haskell on Windows, to use Haskell. The way it gets rid of this issue is that you install dependencies locally, separately, for each project.
At the end of the day, this really sucks for you. I hope you can get it working, Haskell is a lot of fun. You should post the first issue to https://github.com/commercialhaskell/stack/issues/new.