update install (risky but cleaner). Add auto_det_size param and try to emulate old behavior

install.py

@@ -1,8 +1,9 @@
 import launch
 import os
-import pkg_resources
 import sys
+import pkg_resources
 from modules import shared
+from packaging.version import parse
 
 use_gpu = getattr(shared.cmd_opts, "faceswaplab_gpu", False)
 
@@ -15,29 +16,35 @@ else:
         os.path.dirname(os.path.realpath(__file__)), "requirements.txt"
     )
 
+
+def is_installed(package: str) -> bool:
+    package_name = package.split("==")[0].split(">=")[0].strip()
+    try:
+        installed_version = parse(pkg_resources.get_distribution(package_name).version)
+    except pkg_resources.DistributionNotFound:
+        return False
+
+    if "==" in package:
+        required_version = parse(package.split("==")[1])
+        return installed_version == required_version
+    elif ">=" in package:
+        required_version = parse(package.split(">=")[1])
+        return installed_version >= required_version
+    else:
+        return True
+
+
 print("Checking faceswaplab requirements")
 with open(req_file) as file:
     for package in file:
         try:
-            python = sys.executable
             package = package.strip()
 
-            if not launch.is_installed(package.split("==")[0]):
+            if not is_installed(package):
                 print(f"Install {package}")
                 launch.run_pip(
                     f"install {package}", f"sd-webui-faceswaplab requirement: {package}"
                 )
-            elif "==" in package:
-                package_name, package_version = package.split("==")
-                installed_version = pkg_resources.get_distribution(package_name).version
-                if installed_version != package_version:
-                    print(
-                        f"Install {package}, {installed_version} vs {package_version}"
-                    )
-                    launch.run_pip(
-                        f"install {package}",
-                        f"sd-webui-faceswaplab requirement: changing {package_name} version from {installed_version} to {package_version}",
-                    )
 
         except Exception as e:
             print(e)