fix install on older systems

README.md

@@ -13,7 +13,7 @@ Base URL: **https://gitea.linuxiarz.pl/gru/npm-angie-auto-install**
 ---
 
 ## Requirements
-- Debian 12+ / Ubuntu 24.04 (root privileges).
+- Debian 12+ / Ubuntu 20.04+
 - `curl`, `python3`, `sudo`
 - Network access to fetch packages and Node/Yarn artifacts.
 - ~2 GB RAM (recommended) or add 2 GB swap for safer frontend builds.

npm_install.py

@@ -258,20 +258,31 @@ def set_file_ownership(files: list[str | Path], owner: str, mode: int | None = N
     return len(failed) == 0
 
 def ensure_minimum_nodejs(min_version=MIN_NODEJS_VERSION):
-    try:
+    with step("Checking Node.js version requirements"):
+        try:
+            node_ver = runout(["node", "--version"], check=False).strip()
+            
+            match = re.match(r'v?(\d+)', node_ver)
+            if match:
+                current_major = int(match.group(1))
+                if current_major >= min_version:
+                    return True
+        except FileNotFoundError:
+            pass
+        except Exception:
+            pass
+        
+        install_node_from_nodesource(str(min_version))
+    
+    if shutil.which("node"):
         node_ver = runout(["node", "--version"], check=False).strip()
+        if shutil.which("npm"):
+            npm_ver = runout(["npm", "--version"], check=False).strip()
+            printf(f"Node.js: {node_ver}")
+            printf(f" npm: {npm_ver}")
+        else:
+            printf(f"Node.js: {node_ver}")
     
-        match = re.match(r'v?(\d+)', node_ver)
-        if match:
-            current_major = int(match.group(1))
-            if current_major >= min_version:
-                return True
-    except FileNotFoundError:
-        pass
-    except Exception:
-        pass 
-    
-    install_node_from_nodesource(str(min_version))
     return True
 
 def download_extract_tar_gz(url: str, dest_dir: Path) -> Path:
@@ -1646,10 +1657,7 @@ def main():
 
     setup_angie(ipv6_enabled=args.enable_ipv6)
     write_metrics_files()
-    
-    with step("Checking Node.js version requirements"):
-        ensure_minimum_nodejs()
-
+    ensure_minimum_nodejs()
     install_node_and_yarn(node_pkg=args.nodejs_pkg, node_version=args.node_version)
     ensure_user_and_dirs()
     create_sudoers_for_npm()