Fix MathML generation on Macs

geckodriver was vendored in, but only as an ELF binary which aren’t natively compatible on Macs. This adds ARM and Intel binaries for Mac and a Windows Intel binary too, and falls back to checking the path for other machines.

se/browser.py

@@ -4,13 +4,11 @@
 """
 
 import os
+import platform
 import shutil
 from pathlib import Path
-import importlib_resources
 
 from selenium import webdriver
-from selenium.common.exceptions import WebDriverException
-
 
 import se
 
@@ -43,10 +41,20 @@ def initialize_selenium_firefox_webdriver() -> webdriver.firefox.webdriver.WebDr
 	profile.set_preference("browser.http.use-cache", False)
 	profile.set_preference("layout.css.devPixelsPerPx", "2.0")
 
-	try:
-		with importlib_resources.path("se.data.geckodriver", "geckodriver") as geckodriver_path:
-			driver = webdriver.Firefox(firefox_profile=profile, options=options, service_log_path=os.devnull, executable_path=geckodriver_path)
-	except WebDriverException as ex:
-		raise se.MissingDependencyException("Selenium Firefox web driver is not installed. To install it on Linux, download the appropriate zip file from [url][link=https://github.com/mozilla/geckodriver/releases/latest]https://github.com/mozilla/geckodriver/releases/latest[/][/] and place the [bash]geckodriver[/] executable in your [path]$PATH[/] (for example, in [path]~/.local/bin/[/] or [path]/usr/local/bin/[/]). To install it on macOS, run [bash]brew install geckodriver[/].") from ex
-
-	return driver
+	possible_system_geckodriver = shutil.which("geckodriver")
+
+	if platform.system() == "Linux":
+		geckodriver_path = Path("se.data.geckodriver", "geckodriver-linux64")
+	elif platform.system() == "Windows":
+		geckodriver_path = Path("se.data.geckodriver", "geckodriver-win64.exe")
+	elif platform.system() == "Darwin":
+		if platform.machine() == "arm64":
+			geckodriver_path = Path("se.data.geckodriver", "geckodriver-macos-aarch64")
+		else:
+			geckodriver_path = Path("se.data.geckodriver", "geckodriver-macos")
+	elif possible_system_geckodriver is not None:
+		geckodriver_path = Path(possible_system_geckodriver)
+	else:
+		raise se.MissingDependencyException("Selenium Firefox web driver is not installed. To install it on Linux or Windows, download the appropriate zip file from [url][link=https://github.com/mozilla/geckodriver/releases/latest]https://github.com/mozilla/geckodriver/releases/latest[/][/] and place the [bash]geckodriver[/] executable in your [path]$PATH[/] (for example, in [path]~/.local/bin/[/] or [path]/usr/local/bin/[/]). To install it on macOS, run [bash]brew install geckodriver[/].")
+
+	return webdriver.Firefox(firefox_profile=profile, options=options, service_log_path=os.devnull, executable_path=geckodriver_path)