Revert "drop `-nix` suffix from drv/share/texmf"

This reverts commit 059c541b.

setupHook.sh

@@ -7,10 +7,10 @@ addFonts() {
 }
 
 addTexInputs () {
-	if test -d "$1/share/texmf" &&
+	if test -d "$1/share/texmf-nix" &&
 		 echo ${TEXINPUTS-} | grep -vq "$1" 2>/dev/null
 	then
-		export TEXINPUTS="${TEXINPUTS-}${TEXINPUTS:+:}$1/share/texmf/:"
+		export TEXINPUTS="${TEXINPUTS-}${TEXINPUTS:+:}$1/share/texmf-nix/:"
 	fi
 }