Following on from this post, I'm now trying to render tilesets using a setup based on the OSM Bright 2 CSS, which is nicer than other options. This entails installing more fonts:
- Open Sans Regular
- Open Sans Bold
- Open Sans Italic
- Open Sans Semibold
These can all be got with WGET from this site, then you can copy them to /usr/share/fonts/truetype/opensans (new dir), then run sudo fc-cache -f -v to refresh the font cache.