HGKeeper

There are a few notes about building on OSX.

First off, building has *ONLY* been tested against homebrew. If you want to

support fink or macports, please let me know and I will merge your pull

request.

Currently there is no known way to build the Perl loader on MacOS. So you

**MUST** run meson with `-Dperl5=false`.

## Lua

For the Lua loader to work, you need to install `lgi` from luarocks either

systemwide or to a virtual environment created by LuaDist, vert, or something

along those lines, then you just need to run `luarocks install lgi`.

## Python

If you're using homebrew, you need to install `pygobject3`.