- Install the required python libraries (including the development
libraries).
+ For `bup fuse` you will need to install
+ [python-fuse](https://github.com/libfuse/python-fuse) rather than
+ [fusepy](https://github.com/fusepy/fusepy). For example, in
+ Debian, install python3-fuse rather than python3-fusepy.
+
On very recent Debian/Ubuntu versions, this may be sufficient (run
as root):