Refactor packages

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

lib/scripts/add-host.sh

@@ -1,5 +1,4 @@
-#!/usr/bin/env -S nix shell nixpkgs#ssh-to-age nixpkgs#age nixpkgs#sops -c bash
-# shellcheck shell=bash
+#!/usr/bin/env bash
 
 set -o errexit
 set -o nounset

lib/scripts/remove-host.sh

@@ -1,5 +1,4 @@
-#!/usr/bin/env -S nix shell nixpkgs#ssh-to-age -c bash
-# shellcheck shell=bash
+#!/usr/bin/env bash
 
 set -o errexit
 set -o nounset

lib/scripts/update-keys.sh

@@ -1,5 +1,4 @@
-#!/usr/bin/env -S nix shell nixpkgs#sops -c bash
-# shellcheck shell=bash
+#!/usr/bin/env bash
 
 set -o errexit
 set -o nounset

lib/scripts/update.sh

@@ -4,28 +4,30 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
+echo "Updating submodules..."
+
 paths=$(git config --file .gitmodules --name-only --get-regexp path | while read -r line; do
-  path=$(git config --file .gitmodules --get "${line}")
+  path=$(git config --file .gitmodules --get "$line")
   url=$(git config --file .gitmodules --get "${line%.*}.url")
-  if [[ ${url} == *"karaolidis"* ]]; then
-    echo "${path}"
+  if [[ $url == *"karaolidis"* ]]; then
+    echo "$path"
   fi
 done)
 
-for path in ${paths}; do
-  echo "Processing submodule: ${path}"
+for path in $paths; do
+  echo "Processing submodule: $path"
 
-  cd "${path}" || exit
+  cd "$path" || exit
 
   default_branch=$(git remote show origin | awk '/HEAD branch/ {print $NF}')
-  git checkout "${default_branch}"
+  git checkout "$default_branch"
   git fetch upstream
-  git merge "upstream/${default_branch}"
+  git merge "upstream/$default_branch"
 
   branches=$(git for-each-ref --format='%(refname:short)' refs/heads/ | grep -v "^${default_branch}$")
-  for branch in ${branches}; do
-    git checkout "${branch}"
-    git rebase "${default_branch}"
+  for branch in $branches; do
+    git checkout "$branch"
+    git rebase "$default_branch"
   done
 
   git checkout integration
@@ -37,4 +39,16 @@ done
 
 echo "All submodules updated successfully."
 
+echo "Updating packages..."
+
+find packages -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
+
+echo "All packages updated successfully."
+
 nix flake update