linux: fix URLs not opening in PyInstaller package

Because PyInstaller modifies the LD_LIBRARY_PATH environment variable
to make things work correctly on Linux, when we try to launch any
subprocess (such as the web browser), that modified variable gets
picked up as well, causing things to go south.

To work around this Linux-only problem, we have to:

1. Save the current value of LD_LIBRARY_PATH
2. Move the value of LD_LIBRARY_PATH_ORIG to LD_LIBRARY_PATH
3. Launch subprocess
4. Restore the saved LD_LIBRARY_PATH again

Reference:

https://pyinstaller.org/en/stable/runtime-information.html#ld-library-path-libpath-considerations

Co-authored-by: DevilXD <bartosz.peszek@gmail.com>

gui.py

@@ -6,7 +6,6 @@ import sys
 import ctypes
 import asyncio
 import logging
-import webbrowser
 import tkinter as tk
 from pathlib import Path
 from collections import abc
@@ -32,7 +31,7 @@ if sys.platform == "win32":
 from translate import _
 from cache import ImageCache
 from exceptions import ExitRequest
-from utils import resource_path, set_root_icon, Game, _T
+from utils import resource_path, set_root_icon, webopen, Game, _T
 from constants import (
     SELF_PATH, OUTPUT_FORMATTER, WS_TOPICS_LIMIT, MAX_WEBSOCKETS, WINDOW_TITLE, State
 )
@@ -344,10 +343,7 @@ class LinkLabel(ttk.Label):
             # W, N, E, S
             kwargs["padding"] = (0, 2, 0, 2)
         super().__init__(*args, **kwargs)
-        self.bind("<ButtonRelease-1>", self.webopen(self._link))
-
-    def webopen(self, url: str):
-        return lambda e: webbrowser.open_new_tab(url)
+        self.bind("<ButtonRelease-1>", lambda e: webopen(self._link))
 
 
 class SelectMenu(tk.Menubutton, Generic[_T]):
@@ -558,7 +554,7 @@ class LoginForm:
         self._manager.print(_("gui", "login", "request"))
         await self.wait_for_login_press()
         self._manager.print(f"Enter this code on the Twitch's device activation page: {user_code}")
-        webbrowser.open_new_tab("https://www.twitch.tv/activate")
+        webopen("https://www.twitch.tv/activate")
 
     def update(self, status: str, user_id: int | None):
         if user_id is not None:

utils.py

@@ -1,11 +1,14 @@
 from __future__ import annotations
 
+import os
+import sys
 import json
 import random
 import string
 import asyncio
 import logging
 import traceback
+import webbrowser
 import tkinter as tk
 from enum import Enum
 from pathlib import Path
@@ -21,7 +24,7 @@ import yarl
 from PIL.ImageTk import PhotoImage
 from PIL import Image as Image_module
 
-from constants import JsonType
+from constants import JsonType, IS_PACKAGED
 from exceptions import ExitRequest, ReloadRequest
 from constants import _resource_path as resource_path  # noqa
 
@@ -213,6 +216,31 @@ def json_save(path: Path, contents: Mapping[Any, Any], *, sort: bool = False) ->
         json.dump(contents, file, default=_serialize, sort_keys=sort, indent=4)
 
 
+def webopen(url: str):
+    if IS_PACKAGED and sys.platform == "linux":
+        # https://pyinstaller.org/en/stable/
+        # runtime-information.html#ld-library-path-libpath-considerations
+        # NOTE: All 4 cases need to be handled here: either of the two values can be there or not.
+        ld_env = "LD_LIBRARY_PATH"
+        ld_path_curr = os.environ.get(ld_env)
+        ld_path_orig = os.environ.get(f"{ld_env}_ORIG")
+        if ld_path_orig is not None:
+            os.environ[ld_env] = ld_path_orig
+        elif ld_path_curr is not None:
+            # pop current
+            os.environ.pop(ld_env)
+
+        webbrowser.open_new_tab(url)
+
+        if ld_path_curr is not None:
+            os.environ[ld_env] = ld_path_curr
+        elif ld_path_orig is not None:
+            # pop original
+            os.environ.pop(ld_env)
+    else:
+        webbrowser.open_new_tab(url)
+
+
 class ExponentialBackoff:
     def __init__(
         self,