Update Lua package detection in CI workflow

Author: Easton97-Jens

.github/workflows/ci_new.yml

@@ -262,15 +262,15 @@ jobs:
           fetch-depth: 0
           submodules: recursive
 
-      - name: Detect latest Lua dev package
+      - name: Detect latest Lua packages
         id: detect_lua
         shell: bash
         run: |
           set -euo pipefail
 
           apt-get update
 
-          CANDIDATES="$(apt-cache search '^liblua[0-9]+\.[0-9]+-dev$' | awk '{print $1}')"
+          CANDIDATES="$(apt-cache pkgnames | grep -E '^liblua[0-9]+\.[0-9]+-dev$' || true)"
 
           if [ -z "$CANDIDATES" ]; then
             echo "No libluaX.Y-dev package found"
@@ -285,8 +285,20 @@ jobs:
             | awk '{print $2}'
           )"
 
-          echo "lua_pkg=$BEST_PKG" >> "$GITHUB_OUTPUT"
-          echo "Using $BEST_PKG"
+          if [ -z "$BEST_PKG" ]; then
+            echo "Failed to determine Lua dev package"
+            printf '%s\n' "$CANDIDATES"
+            exit 1
+          fi
+
+          BEST_VER="$(printf '%s\n' "$BEST_PKG" | sed -E 's/^liblua([0-9]+\.[0-9]+)-dev$/\1/')"
+          LUA_PKG="lua$BEST_VER"
+
+          echo "lua_dev_pkg=$BEST_PKG" >> "$GITHUB_OUTPUT"
+          echo "lua_pkg=$LUA_PKG" >> "$GITHUB_OUTPUT"
+
+          echo "Using dev package: $BEST_PKG"
+          echo "Using interpreter: $LUA_PKG"
 
       - name: Install dependencies (v2 style)
         run: |
@@ -300,6 +312,7 @@ jobs:
             libyajl-dev \
             libcurl4-openssl-dev \
             liblmdb-dev \
+            ${{ steps.detect_lua.outputs.lua_dev_pkg }} \
             ${{ steps.detect_lua.outputs.lua_pkg }} \
             libmaxminddb-dev \
             libpcre2-dev \
@@ -311,6 +324,12 @@ jobs:
             python3 \
             python3-venv
             
+      - name: Show Lua installation
+        run: |
+          which lua || true
+          lua -v || true
+          dpkg -l | grep lua || true
+            
       - name: Run build preparation script
         run: ./build.sh