Enable running on Windows

ai2thor/build.py

@@ -73,7 +73,7 @@ def lock_sh(self):
 class ExternalBuild(object):
     def __init__(self, executable_path):
         self.executable_path = executable_path
-        external_system_platforms = dict(Linux=Linux64, Darwin=OSXIntel64)
+        external_system_platforms = dict(Linux=Linux64, Darwin=OSXIntel64, Windows=StandaloneWindows64)
         self.platform = external_system_platforms[platform.system()]
 
         # assuming that an external build supports both server types

ai2thor/controller.py

@@ -1166,8 +1166,8 @@ def _start_unity_thread(self, env, width, height, server_params, image_name):
                 if self.server.unity_proc.returncode is not None:
                     message = (
                         "Unity process has exited - check "
-                        "~/.config/unity3d/Allen\ Institute\ for\ "
-                        "Artificial\ Intelligence/AI2-THOR/Player.log for errors. "
+                        "~/.config/unity3d/Allen\\ Institute\\ for\\ "
+                        "Artificial\\ Intelligence/AI2-THOR/Player.log for errors. "
                         "Confirm that Vulkan is properly configured on this system "
                         "using vulkaninfo from the vulkan-utils package. returncode=%s"
                         % (self.server.unity_proc.returncode,)

ai2thor/platform.py

@@ -222,7 +222,15 @@ class WebGL(BasePlatform):
 class StandaloneWindows64(BasePlatform):
     @classmethod
     def executable_path(cls, base_dir, name):
-        return os.path.join(base_dir, name)
+        # can't run executable without the .exe extension on Windows
+        path = os.path.join(base_dir, name + ".exe")
+        # Flip the slashes to avoid losing them during the call to the 
+        # Unity executable
+        return path.replace("\\", "/")
+
+    @classmethod
+    def old_executable_path(cls, base_dir, name):
+        return cls.executable_path(base_dir, name)
 
 def select_platforms(request):
     candidates = []

setup.py

@@ -42,7 +42,6 @@
     author_email="ai2thor@allenai.org",
     packages=find_packages(exclude=["*.tests", "*.tests.*", "tests.*", "tests"]),
     install_requires=[
-        "flask",
         "numpy",
         "pyyaml",
         "requests",
@@ -53,7 +52,11 @@
         "Pillow",
         "python-xlib",
         "opencv-python",
-        "werkzeug>=0.15.0",  # needed for unix socket support
+        # last versions where TCP keepalive is enabled in the development server,
+        # required the WsgiServer to work properly
+        # see https://werkzeug.palletsprojects.com/en/2.3.x/changes/#version-2-1-2
+        "flask==2.1.3",
+        "werkzeug==2.1.1"
     ],
     setup_requires=["pytest-runner"],
     tests_require=["pytest", "pytest-timeout", "pytest-cov", "jsonschema", "shapely", "pytest-mock", "dictdiffer"],