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I am trying to use nix package manager which is supposed to be a better than apt. As an example I tried to delete mupdf, my pdf file viewer using sudo apt-get remove --purge mupdf and install it with nix with the command

$ nix-env -iA nixpkgs.mupdf installing 'mupdf-1.23.6' 

I then tried to use it with the command mupdf apdffile.pdf but got the folllowing error

GLUT error: ERROR: Internal error <FBConfig with necessary capabilities not found> in function fgOpenWindow X Error of failed request: 167 Major opcode of failed request: 152 () Minor opcode of failed request: 21 Serial number of failed request: 50 Current serial number in output stream: 50 

What am I doing wrong?

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