XeTeX missing with TexLive

After a new installation under Squeeze 6.0.4 as root with :

apt-get install texlive

I got the following error while compiling a simple file :

$ xetex file.tex
kpathsea: Running mktexfmt xelatex.fmt 
I can't find the format file `xelatex.fmt'!

In my case, the package texlive-xetex was missing and a new installation as root fixed the issue :

apt-get install --reinstall texlive-xetex

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