Today we could verify that Taskwarrior works out of the box under "Bash on Ubuntu on Windows 10". Either by installing it via apt-get (which pulls the regular Ubuntu package) or by compiling it. No changes needed to the source code. You compile it as you would do it on native Ubuntu. A few tests were failing. But no major ones. Enjoy the screenshot and enjoy the thoughts of being able to abandon Cygwin soon, if you are using Taskwarrior on Windows.