I know PyQt4 is a complicated dependency when installing ETE. Although it should not be difficult to get it installed in most linux distributions, it may require root privileges, be difficult to upgrade or lead to unresolved cross-dependencies. Some workarounds are available, and one could still use most ETE functionality without the Qt libraries, but I understand tree rendering and visualisation is a major asset in ETE and its use should be as easy as possible.
Getting a less dependent drawing engine in ETE is a priority for future versions, but it may still take me some time to find a good alternative. Meanwhile, I came out with a not-so-elegant but working solution that will hopefully alleviate installation problems for people struggling with dependencies.
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