Add some cheap return and parameter annotations

Use: https://github.com/JelleZijlstra/autotyping
to add "safe" return annotations.

Where a parameter has a default value that is an obvious scalar type
(bool, int, str, etc.) add those annotations as well.

Also fixed two small bugs that popped up when sanity-checking with
mypy.  One in FortranCommon, where a return had been previously
annotated to be a tuple of Action, which should be ActionBase -
Action is the factory function, not the base class. The other was
a typo in the error raised in _add_cppdefines - the message was
formatted with the value of "define" which should have been "defines".

Signed-off-by: Mats Wichmann <mats@linux.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/SCons/Tool/mingw.py b/SCons/Tool/mingw.py
index 8e7ac2df9..07f15b74c 100644
--- a/SCons/Tool/mingw.py
+++ b/SCons/Tool/mingw.py
@@ -142,7 +142,7 @@ def get_mingw_paths():
         _mingw_all_paths = mingw_base_paths + find_version_specific_mingw_paths()
     return _mingw_all_paths
 
-def generate(env):
+def generate(env) -> None:
     # Check for reasoanble mingw default paths
     mingw_paths = get_mingw_paths()