Fonts for matplotlib
--------------------

Make sure the right fonts are installed:
```
sudo apt-get install ttf-lyx2.0 
```
There is some conflict with `lyx` fonts, so we first remove them
and remove the matplotlib font cache:
```
sudo dpkg --remove --force-depends fonts-lyx
rm ~/.cache/matplotlib/fontList.cache
# rm ~/.matplotlib/fontList.cache     # older ubuntus
```
Then we need to plot something to recreate the matplotlib font cache:
```
make cleanplots
make plots
```
To give back the fonts to lyx we reinstall them
```
sudo apt-get install fonts-lyx 
```