texlive.combine: also patch texmfcnf.lua

Fixes #14463.

pkgs/tools/typesetting/tex/texlive-new/combine.nix

@@ -79,6 +79,19 @@ in buildEnv {
         -e "s,\$SELFAUTOGRANDPARENT,$out/share,g" \
         "$cnfOrig" > ./texmf.cnf
 
+      local cnfLuaOrig="$(realpath ./texmfcnf.lua)"
+      rm ./texmfcnf.lua
+      sed \
+        -e 's,texmf-dist,texmf,g' \
+        -e 's,texmf-local,texmf,g' \
+        -e "s,\(TEXMFLOCAL[ ]*=[ ]*\)[^\,]*,\1\"$out/share/texmf\",g" \
+        -e "s,\$SELFAUTOLOC,$out,g" \
+        -e "s,selfautodir:/,$out/share/,g" \
+        -e "s,selfautodir:,$out/share/,g" \
+        -e "s,selfautoparent:/,$out/share/,g" \
+        -e "s,selfautoparent:,$out/share/,g" \
+        "$cnfLuaOrig" > ./texmfcnf.lua
+
       rm updmap.cfg
     )
   '' +