nix: Make nix the root

Which means now I'll have to think about real prefixes in commit names.

unprocessed/config/polybar/linuxmismatch

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+if ! which pacman &> /dev/null
+then
+    exit 1
+fi
+
+packageVersion=$(pacman -Q linux | cut -d' ' -f2)
+runningVersion=$(uname -r)
+
+if echo "$runningVersion" | grep "^$packageVersion" &> /dev/null
+then
+    exit 1
+else
+    exit 0
+fi
+