Flakify lib, sas

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

scripts/update.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+find . -type f -name "*.nix" | while read -r file; do
+  update_command=$(grep -oP '^#\s*AUTO-UPDATE:\s*\K.+' "$file" || true)
+  if [[ -n "$update_command" ]]; then
+    echo "Running update command in: $file"
+    eval "$update_command"
+  fi
+done
+
+nix flake update