Package include paths seem to be ignored when using per-function requirements (and specifying module), instead, only module contents are taken.

18:51:21 -> sls package && unzip -l .serverless/functions/my_function-sls-test-dev-my_function.zip
Serverless: Adding Python requirements helper to functions/my_function...
Serverless: Installing requirements of functions/my_function/requirements.txt in .serverless/functions/my_function...
Serverless: Zipping required Python packages for functions/my_function...
Serverless: Packaging service...
Serverless: Excluding development dependencies...
Serverless: Removing Python requirements helper from functions/my_function...
Serverless: Injecting required Python packages to package...
Archive:  .serverless/functions/my_function-sls-test-dev-my_function.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
        0  2098-01-01 00:00   requirements.txt
       22  2098-01-01 00:00   .requirements.zip
      119  2098-01-01 00:00   handler.py
       34  2098-01-01 00:00   other_file.py
      458  2098-01-01 00:00   unzip_requirements.py
---------                     -------
      633                     5 files

Then when Commenting out serverless-python-requirements like so:

#plugins:
#  - serverless-python-requirements

I get:

18:53:09 -> unzip -l .serverless/my_function.zip 
Archive:  .serverless/my_function.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
       40  1980-01-01 00:00   functions/common/utils.py
       22  1980-01-01 00:00   functions/my_function/.requirements.zip
      119  1980-01-01 00:00   functions/my_function/handler.py
       34  1980-01-01 00:00   functions/my_function/other_file.py
        0  1980-01-01 00:00   functions/my_function/requirements.txt
---------                     -------
      215                     5 files

When leaving plugin registered, commenting out module: functions/my_function, and ensuring we have a root level requirements.txt

18:53:23 -> touch requirements.txt
18:55:01 -> sls package && unzip -l .serverless/my_function.zip 
Serverless: Adding Python requirements helper to ....
Serverless: Installing requirements of requirements.txt in .serverless...
Serverless: Zipping required Python packages for ....
Serverless: Packaging service...
Serverless: Excluding development dependencies...
Serverless: Removing Python requirements helper from ....
Serverless: Injecting required Python packages to package...
Archive:  .serverless/my_function.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
       22  1980-01-01 00:00   ./.requirements.zip
       40  1980-01-01 00:00   functions/common/utils.py
       22  1980-01-01 00:00   functions/my_function/.requirements.zip
      119  1980-01-01 00:00   functions/my_function/handler.py
       34  1980-01-01 00:00   functions/my_function/other_file.py
        0  1980-01-01 00:00   functions/my_function/requirements.txt
      458  1980-01-01 00:00   unzip_requirements.py
---------                     -------
      695                     7 files