OCIO: adding exception for nuke, hiero into hook

openpype/hooks/pre_ocio_hook.py

@@ -45,6 +45,9 @@ class OCIOEnvHook(PreLaunchHook):
         if config_data:
             ocio_path = config_data["path"]
 
+            if self.host_name in ["nuke", "hiero"]:
+                ocio_path = ocio_path.replace("\\", "/")
+
             self.log.info(
                 f"Setting OCIO environment to config path: {ocio_path}")
 

openpype/hosts/nuke/api/lib.py

@@ -2177,6 +2177,7 @@ Reopening Nuke should synchronize these paths and resolve any discrepancies.
         """
         # replace path with env var if possible
         ocio_path = self._replace_ocio_path_with_env_var(config_data)
+        ocio_path = ocio_path.replace("\\", "/")
 
         log.info("Setting OCIO config path to: `{}`".format(
             ocio_path))