refactor: move platform-specific code to platform_util.py

src/toolManager/gui_fixed.py

@@ -3,7 +3,7 @@
 import sys
 import ctypes
 import subprocess
-import platform
+from platform_utils import IS_WINDOWS, IS_LINUX
 from PyQt6.QtWidgets import (
     QApplication, QMainWindow, QWidget, QVBoxLayout, QHBoxLayout,
     QTableWidget, QTableWidgetItem, QHeaderView, QProgressBar,
@@ -15,11 +15,6 @@
 from PyQt6.QtGui import QFont
 import logging
 
-PYTHON     = sys.executable
-SYSTEM     = platform.system()
-IS_WINDOWS = SYSTEM == "Windows"
-IS_LINUX   = SYSTEM == "Linux"
-
 import os
 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
 

src/toolManager/main.py

@@ -12,11 +12,29 @@
 )
 from PyQt6.QtCore import Qt, QThread, pyqtSignal
 from PyQt6.QtGui import QFont
+from platform_utils import IS_WINDOWS, IS_LINUX, IS_MAC, distro_label
 
 # ==================== CONFIG ====================
 BASE_DIR = Path(__file__).resolve().parent
 INFO_JSON = BASE_DIR / "information.json"
-FULL_GUI  = BASE_DIR / "gui_fixed.py"
+
+if IS_WINDOWS:
+    BACKEND  = BASE_DIR / "tool_manager_windows.py"
+    FULL_GUI = BASE_DIR / "gui_fixed.py"
+    OS_LABEL = "Windows Edition"
+elif IS_LINUX:
+    BACKEND  = BASE_DIR / "tool_manager_linux.py"
+    FULL_GUI = BASE_DIR / "updater_gui.py"
+    OS_LABEL = f"{distro_label()} Edition"
+elif IS_MAC:
+    BACKEND  = BASE_DIR / "tool_manager_macos.py"
+    FULL_GUI = BASE_DIR / "updater_gui.py"
+    OS_LABEL = f"{distro_label()} Edition"
+else:
+    BACKEND  = BASE_DIR / "tool_manager_linux.py"
+    FULL_GUI = BASE_DIR / "updater_gui.py"
+    OS_LABEL = "Linux Edition"
+
 PYTHON    = sys.executable
 
 ANALOG_TOOLS  = ["esim", "kicad", "ngspice"]
@@ -41,12 +59,16 @@
 }
 
 def is_admin():
+    if not IS_WINDOWS:
+        return True 
     try:
         return ctypes.windll.shell32.IsUserAnAdmin()
     except Exception:
         return False
 
 def relaunch_as_admin():
+    if not IS_WINDOWS:
+        return True 
     script = str(Path(__file__).resolve())
 
     # Swap to pythonw.exe to suppress the black console window
@@ -92,7 +114,7 @@ def __init__(self, tools):
 
     def run(self):
         success = True
-        backend = str(BASE_DIR / "tool_manager_windows.py")
+        backend = str(BACKEND)
         for tool, version in self.tools:
             self.progress.emit(
                 f"Installing {TOOL_LABELS.get(tool, tool)} {version}..."
@@ -186,7 +208,7 @@ def _create_header(self):
         t1 = QLabel("eSim Tool Manager")
         t1.setFont(QFont("Arial", 24, QFont.Weight.Bold))
         t1.setStyleSheet("color: white; background: transparent;")
-        t2 = QLabel("Package Management System  •  Windows Edition")
+        t2 = QLabel(OS_LABEL)
         t2.setFont(QFont("Arial", 11))
         t2.setStyleSheet("color: rgba(255,255,255,0.9); background: transparent;")
         vbox.addWidget(t1)
@@ -658,17 +680,15 @@ def _on_install_done(self, success, mode_name):
 
     def _open_full_manager(self):
         if not FULL_GUI.exists():
-            QMessageBox.critical(
-                self, "File Not Found",
-                f"gui_fixed.py not found at:\n{FULL_GUI}\n\n"
-                f"Make sure all files are in:\n{BASE_DIR}"
-            )
+            QMessageBox.critical(self, "Error",
+                     f"GUI not found at:\n{FULL_GUI}\n\n"
+                     f"Details: {e}")
             return
         try:
             subprocess.Popen(
                 [PYTHON, str(FULL_GUI)],
                 creationflags=(subprocess.CREATE_NO_WINDOW
-                               if sys.platform == "win32" else 0)
+                               if IS_WINDOWS else 0)
             )
         except Exception as e:
             QMessageBox.critical(self, "Error",
@@ -719,12 +739,12 @@ def _uninstall_all(self):
 
     def _run_uninstall(self, tools, label):
         try:
-            backend = str(BASE_DIR / "tool_manager_windows.py")
+            backend = str(BACKEND)
             for tool, _ in tools:
                 subprocess.Popen(
                     [PYTHON, backend, "uninstall", tool, "none"],
                     creationflags=(subprocess.CREATE_NO_WINDOW
-                                   if sys.platform == "win32" else 0)
+                                   if IS_WINDOWS else 0)
                 )
             QMessageBox.information(
                 self, "Uninstall Started",
@@ -737,7 +757,7 @@ def _run_uninstall(self, tools, label):
 
 
 def main():
-    if sys.platform == "win32" and not is_admin():
+    if IS_WINDOWS and not is_admin():
         # Note: We deliberately skip a manual PyQt consent dialog here because
         # Windows will natively prompt the user with a UAC shield anyway.
         relaunch_as_admin()

src/toolManager/tool_manager_windows.py

@@ -13,6 +13,7 @@
 import time
 import io
 from pathlib import Path
+from platform_utils import IS_WINDOWS, MSYS2_PATH
 
 # Add local directory to path for backend utility imports
 _local_path = str(Path(__file__).resolve().parent)
@@ -21,21 +22,19 @@
 
 from utils import (
     run_cmd_safe, run_cmd_stream, which, print_status,
-    DEFAULT_MSYS2_PATH, DEFAULT_ESIM_DIR, WIN_KICAD_PATHS,
+    DEFAULT_ESIM_DIR, WIN_KICAD_PATHS,
     WIN_NGSPICE_PATHS, WIN_LLVM_PATHS, get_msys2_bash, 
     get_msys2_mingw_bin, get_msys2_mingw_root
 )
 
-if sys.platform == "win32":
+if IS_WINDOWS:
     sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding='utf-8', errors='ignore')
     sys.stderr = io.TextIOWrapper(sys.stderr.buffer, encoding='utf-8', errors='ignore')
 
 BASE_DIR = Path(__file__).resolve().parent
 STATE_FILE = BASE_DIR / "information.json"
 BASE_DIR.mkdir(parents=True, exist_ok=True)
 
-MSYS2_PATH = DEFAULT_MSYS2_PATH
-
 DOWNLOAD_DIR = BASE_DIR / "Download"
 DOWNLOAD_DIR.mkdir(parents=True, exist_ok=True)
 
@@ -202,7 +201,7 @@ def _find_ngspice_exe():
     return which("ngspice") or which("ngspice.exe")
 
 def find_llvm_fixed(version=None):
-    if platform.system() == "Windows":
+    if IS_WINDOWS:
         import ctypes
         HWND_BROADCAST = 0xFFFF
         WM_SETTINGCHANGE = 0x001A

src/toolManager/updater_gui.py

@@ -11,6 +11,7 @@
                              QAbstractItemView)
 from PyQt6.QtCore import Qt, QThread, pyqtSignal
 from PyQt6.QtGui import QFont
+from platform_utils import IS_WINDOWS, distro_label
 
 class InstallerThread(QThread):
     progress = pyqtSignal(str, int)
@@ -22,6 +23,10 @@ def __init__(self, packages_to_install):
         self.packages = packages_to_install
 
     def run(self):
+        if IS_WINDOWS:
+            self.finished.emit(False, "Package Updater is Linux only.\nOn Windows, use the main Tool Manager.")
+            return
+
         total = len(self.packages)
         for pkg_idx, (package_name, version, script_name) in enumerate(self.packages):
             try:
@@ -368,7 +373,7 @@ def create_header(self):
         title.setFont(QFont("Segoe UI", 14, QFont.Weight.Bold))
         title.setStyleSheet("color: white; background: transparent;")
 
-        subtitle = QLabel("Real-time progress • Ngspice 35-43 • Ubuntu 22.04")
+        subtitle = QLabel(f"Real-time progress • Ngspice 35-43 • {distro_label()}")
         subtitle.setFont(QFont("Segoe UI", 8))
         subtitle.setStyleSheet("color: rgba(255,255,255,0.9); background: transparent;")
 

src/toolManager/utils.py

@@ -17,11 +17,11 @@
 import threading
 import time
 from pathlib import Path
+from platform_utils import IS_WINDOWS, MSYS2_PATH
 
 # ==================== CONSTANTS & DEFAULTS ====================
 
 # Default Windows installation paths
-DEFAULT_MSYS2_PATH = Path(r"C:\msys64")
 DEFAULT_ESIM_DIR = Path(r"C:\FOSSEE\eSim")
 
 WIN_KICAD_PATHS = [
@@ -62,7 +62,7 @@ def run_cmd_safe(cmd, timeout=30, cwd=None):
     Returns the subprocess.CompletedProcess result or None if failed.
     """
     try:
-        if platform.system() == "Windows":
+        if IS_WINDOWS:
             startupinfo = subprocess.STARTUPINFO()
             startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
             startupinfo.wShowWindow = subprocess.SW_HIDE
@@ -94,7 +94,7 @@ def run_cmd_stream(cmd, timeout=900, cwd=None):
     Returns a tuple of (returncode, full_output_string).
     """
     try:
-        if platform.system() == "Windows":
+        if IS_WINDOWS:
             si = subprocess.STARTUPINFO()
             si.dwFlags |= subprocess.STARTF_USESHOWWINDOW
             si.wShowWindow = subprocess.SW_HIDE
@@ -161,7 +161,7 @@ def get_msys2_bash():
     """
     Returns the path to MSYS2 bash.exe if found, else None.
     """
-    bash_path = DEFAULT_MSYS2_PATH / "usr" / "bin" / "bash.exe"
+    bash_path = MSYS2_PATH / "usr" / "bin" / "bash.exe"
     return bash_path if bash_path.exists() else None
 
 def get_msys2_mingw_root():