Ah, well, anyway I suggest you use the binary calibre distributed from the main website. Even if you don't use it much, there are still a heck of a lot of bugfixes, surely many to do with conversion, in the past few years.
Also the 2.x update can run fully headless on the CLI, which reduces memory usage when running the CLI tools.
P.S. What is the specific problem with systemd? I haven't really had any problems with it, I know a lot of people deeply dislike Poettering, apparently for good reason... but since systemd isn't breaking horribly on me, I don't give a darn about the lead developer's attitude.
I guess I am not delving nearly deep enough into the OS internals to run into all the rumored craziness hype about it.
