improve dev setup comments and hints (#28495)

* improve dev setup comments and hints

* fix tests for new dev setup hints

conftest.py

@@ -26,7 +26,7 @@
 
 
 # allow having multiple repository checkouts and not needing to remember to rerun
-# 'pip install -e .[dev]' when switching between checkouts and running tests.
+# `pip install -e '.[dev]'` when switching between checkouts and running tests.
 git_repo_path = abspath(join(dirname(__file__), "src"))
 sys.path.insert(1, git_repo_path)
 

examples/flax/conftest.py

@@ -21,7 +21,7 @@
 
 
 # allow having multiple repository checkouts and not needing to remember to rerun
-# 'pip install -e .[dev]' when switching between checkouts and running tests.
+# `pip install -e '.[dev]'` when switching between checkouts and running tests.
 git_repo_path = abspath(join(dirname(dirname(dirname(__file__))), "src"))
 sys.path.insert(1, git_repo_path)
 

examples/pytorch/conftest.py

@@ -21,7 +21,7 @@
 
 
 # allow having multiple repository checkouts and not needing to remember to rerun
-# 'pip install -e .[dev]' when switching between checkouts and running tests.
+# `pip install -e '.[dev]'` when switching between checkouts and running tests.
 git_repo_path = abspath(join(dirname(dirname(dirname(__file__))), "src"))
 sys.path.insert(1, git_repo_path)
 

src/transformers/utils/versions.py

@@ -113,5 +113,5 @@ def require_version(requirement: str, hint: Optional[str] = None) -> None:
 
 def require_version_core(requirement):
     """require_version wrapper which emits a core-specific hint on failure"""
-    hint = "Try: pip install transformers -U or pip install -e '.[dev]' if you're working with git main"
+    hint = "Try: `pip install transformers -U` or `pip install -e '.[dev]'` if you're working with git main"
     return require_version(requirement, hint)

tests/utils/test_versions_utils.py

@@ -68,7 +68,7 @@ def test_core(self):
                 require_version_core(req)
             except importlib.metadata.PackageNotFoundError as e:
                 self.assertIn(f"The '{req}' distribution was not found and is required by this application", str(e))
-                self.assertIn("Try: pip install transformers -U", str(e))
+                self.assertIn("Try: `pip install transformers -U`", str(e))
 
         # bogus requirements formats:
         # 1. whole thing

utils/check_repo.py

@@ -358,12 +358,12 @@ def check_missing_backends():
         missing = ", ".join(missing_backends)
         if os.getenv("TRANSFORMERS_IS_CI", "").upper() in ENV_VARS_TRUE_VALUES:
             raise Exception(
-                "Full repo consistency checks require all backends to be installed (with `pip install -e .[dev]` in the "
+                "Full repo consistency checks require all backends to be installed (with `pip install -e '.[dev]'` in the "
                 f"Transformers repo, the following are missing: {missing}."
             )
         else:
             warnings.warn(
-                "Full repo consistency checks require all backends to be installed (with `pip install -e .[dev]` in the "
+                "Full repo consistency checks require all backends to be installed (with `pip install -e '.[dev]'` in the "
                 f"Transformers repo, the following are missing: {missing}. While it's probably fine as long as you "
                 "didn't make any change in one of those backends modeling files, you should probably execute the "
                 "command above to be on the safe side."