When using "detect_with_pip_freeze" make sure that "package @ file://" lines are replaced with "package==x.y.z" because local file will probably not be available

trains/backend_interface/task/repo/freeze.py

@@ -4,8 +4,30 @@ from .util import get_command_output
 
 
 def pip_freeze():
+    req_lines = []
+    local_packages = []
     try:
-        return get_command_output([sys.executable, "-m", "pip", "freeze"]).splitlines()
+        req_lines = get_command_output([sys.executable, "-m", "pip", "freeze"]).splitlines()
+        # fix "package @ file://" from pip freeze to "package"
+        for i, r in enumerate(req_lines):
+            parts = r.split('@', 1)
+            if parts and len(parts) == 2 and parts[1].strip().lower().startswith('file://'):
+                req_lines[i] = parts[0]
+                local_packages.append((i, parts[0].strip()))
+        # if we found local packages, at least get their versions (using pip list)
+        if local_packages:
+            # noinspection PyBroadException
+            try:
+                list_lines = get_command_output(
+                    [sys.executable, "-m", "pip", "list", "--format", "freeze"]).splitlines()
+                for index, name in local_packages:
+                    line = [r for r in list_lines if r.strip().startswith(name+'==')]
+                    if not line:
+                        continue
+                    line = line[0]
+                    req_lines[index] = line.strip()
+            except Exception:
+                pass
     except Exception as ex:
         print('Failed calling "pip freeze": {}'.format(str(ex)))
-    return []
+    return req_lines