problemtools on WSL instructions

[godmar]

I installed WSL with the Ubuntu 18 app.
I didn't start fresh but with a WSL that already had the build-essential and python (and possibly other things) installed.

I was able to get problemtools to work (with one warning, described later), as follows:

sudo apt-get install \
    virtualenv automake libboost-all-dev \
    texlive-latex-base texlive-latex-extra texlive-latex-recommended \
    texlive-fonts-recommended texlive-fonts-extra \
    texlive-lang-greek texlive-lang-cyrillic \
    openjdk-8-jre-headless tidy libgmp-dev

Then, I could create a virtual environment and install problemtools into it with

virtualenv yourenv
./yourenv/bin/activate
pip install git+https://github.com/kattis/problemtools

Be aware that this takes a long time due to WSL being dog slow when it comes to file operations. However, once done, problemtools seems to work!

The only error that's left is:

WARNING in ...: Hard stack rlimit of 8388608 so I can't set it to unlimited. I will keep it at 8388608. If you experience unexpected issues (in particular run-time errors) this may be the cause.

which is likely due to WSL's stack limit