Sorry about that. When I started writing this I had no idea cairo would be such a pain on Windows.
There's an issue about it here: [https://github.com/Vindaar/ggplotnim/issues/57](https://github.com/Vindaar/ggplotnim/issues/57) I haven't updated the README yet, mostly because I don't have a good solution either yet. The easiest for me on a practical level was to just install emacs and add it to my PATH (which is I guess equivalent to you using the Inkscape libraries). I guess I can think about either adding working versions of the required libraries to the repository for windows (at least win64) or a script which clones the cairo repository and builds it locally. I haven't built cairo locally yet, so I don't know if it works well. Now regarding your actual question. If you want to ship a program, which uses ggplotnim internally, you have to do what people do on Windows as far as I know: bundle all required DLLs with the program. The other alternative would be a static build of cairo. I'll see what I can do to improve the situation. Thanks for the input!
