Replace watch-changes script with watchexec

bin/watch-changes

@@ -1,17 +0,0 @@
-#!/usr/bin/env bash
-
-if [[ "$1" == "" || "$2" == "" ]]; then
-  echo "usage: ${0##*/} <file> <command>";
-  exit 2;
-fi
-
-set -uo pipefail
-
-while true; do
-  inotifywait \
-    --event modify \
-    --event move_self \
-    --exclude ".git|simpletest|vendor" \
-    --recursive \
-    $1 && $2
-done

system/shared/home-manager-packages.nix

@@ -32,6 +32,7 @@ with pkgs; [
   tree-sitter
   unzip
   virtualenv
+  watchexec
   wget
   xcp
   xh