[Nix-dev] texmacs

[maggesi at math.unifi.it]

Hi,
does anybody uses texmacs on nixos?
When I start texmacs I get the following error

~$ texmacs

I could not open ecrm11 at 300

Fatal error: Tex seems not to be installed properly in 'load_tex'
See file   : load_tex.cpp

Does this mean that I have to install other packages (fonts or  
something else)?

Thanks,
Marco

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