diff -rc --exclude=texmf.in tetex-src-3.0.orig/texk/kpathsea/texmf.in-teTeX tetex-src-3.0/texk/kpathsea/texmf.in-teTeX
*** tetex-src-3.0.orig/texk/kpathsea/texmf.in-teTeX	2006-01-27 17:33:11.000000000 +0100
--- tetex-src-3.0/texk/kpathsea/texmf.in-teTeX	2006-01-27 17:38:35.000000000 +0100
***************
*** 104,109 ****
--- 104,115 ----
  %   TEXMFCONFIG = @texmf@-config
  TEXMFCONFIG = $HOME/.texmf-config
  
+ % TEXMFNIX is supposed to be unset. It's used by the Nix
+ % system to add trees during the build of nix-expressions.
+ 
+ % TEXMFNIXHOME, for packages in the user environment.
+ TEXMFNIXHOME = $HOME/.nix-profile/share/texmf-nix
+ 
  % Now, list all the texmf trees. If you have multiple trees you can
  % use shell brace notation, like this:
  %   TEXMF = {$TEXMFHOME,!!$TEXMFLOCAL,!!$TEXMFMAIN}
***************
*** 111,117 ****
  %
  % For texconfig to work properly, TEXMFCONGIG and TEXMFVAR should be named
  % explicitly and before all other trees.
! TEXMF = {!!$TEXMFCONFIG,!!$TEXMFVAR,$TEXMFHOME,!!$TEXMFSYSCONFIG,!!$TEXMFSYSVAR,!!$TEXMFMAIN,!!$TEXMFLOCAL,!!$TEXMFDIST}
  
  % The system trees.  These are the trees that are shared by all the users.
  SYSTEXMF = $TEXMFLOCAL;$TEXMFMAIN;$TEXMFDIST
--- 117,123 ----
  %
  % For texconfig to work properly, TEXMFCONGIG and TEXMFVAR should be named
  % explicitly and before all other trees.
! TEXMF = {!!$TEXMFCONFIG,!!$TEXMFVAR,$TEXMFNIX,$TEXMFHOME,$TEXMFNIXHOME,!!$TEXMFSYSCONFIG,!!$TEXMFSYSVAR,!!$TEXMFMAIN,!!$TEXMFLOCAL,!!$TEXMFDIST}
  
  % The system trees.  These are the trees that are shared by all the users.
  SYSTEXMF = $TEXMFLOCAL;$TEXMFMAIN;$TEXMFDIST