[tex-live] diet pi (debian on raspberry pi 2)

[zew]

$ tlmgr install euenc
(running on Debian, switching to user mode!)
/usr/bin/tlmgr: Initialization failed (in setup_unix_one):
/usr/bin/tlmgr: could not find a usable xzdec.
/usr/bin/tlmgr: Please install xzdec and try again.
Couldn't set up the necessary programs.
Installation of packages is not supported.
Please report to texlive at tug.org.
tlmgr: exiting unsuccessfully (status 1).
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