Add Hydra support phase one: fix current working dir (issue #219). Fix cwd outside of repository root folder

trains/backend_interface/task/repo/scriptinfo.py

@@ -560,7 +560,8 @@ class ScriptInfo(object):
 
         try:
             # Use os.path.relpath as it calculates up dir movements (../)
-            entry_point = os.path.relpath(str(script_path), str(Path.cwd()))
+            entry_point = os.path.relpath(
+                str(script_path), str(cls._get_working_dir(repo_root, return_abs=True)))
         except ValueError:
             # Working directory not under repository root
             entry_point = script_path.relative_to(repo_root)
@@ -568,14 +569,30 @@ class ScriptInfo(object):
         return Path(entry_point).as_posix()
 
     @classmethod
-    def _get_working_dir(cls, repo_root):
+    def _get_working_dir(cls, repo_root, return_abs=False):
         repo_root = Path(repo_root).absolute()
+        cwd = None
+
+        # check if running with hydra
+        if sys.modules.get('hydra'):
+            # noinspection PyBroadException
+            try:
+                # noinspection PyPackageRequirements
+                import hydra
+                cwd = Path(hydra.utils.get_original_cwd()).absolute()
+            except Exception:
+                pass
+
+        if not cwd:
+            cwd = Path.cwd().absolute()
 
         try:
-            return Path.cwd().relative_to(repo_root).as_posix()
+            # do not change: test if we are under the repo root folder, it will throw an exception if we are not
+            relative = cwd.relative_to(repo_root).as_posix()
+            return cwd.as_posix() if return_abs else relative
         except ValueError:
-            # Working directory not under repository root
-            return os.path.curdir
+            # Working directory not under repository root, default to repo root
+            return repo_root.as_posix() if return_abs else '.'
 
     @classmethod
     def _get_script_code(cls, script_path):