There are some locally installed packages I don't want to install on my lambda function, such as coverage or mypy. They are in theexcludes but somehow are still included in the final ZIP. This change prevents ignored packages from being included in the final ZIP file, resulting for me in a 30% reduction of the lambda size.

This works fine for me locally using Python3.7 and Python3.8

One caveat I just discovered is that patterns (likepackagename*) will not be interpreted and will be used as plain strings.

Resulting output:

Downloading and installing dependencies..                                                                                                                                     - psycopg2==2.7.7: Using locally cached manylinux wheel                                                                                                                      - pip==19.0.3: ignored, skipping...                                                                                                                                          - mypy==0.720: ignored, skipping...                                                                                                                                          - markupsafe==1.1.1: Using locally cached manylinux wheel                                                                                                                    - ipdb==0.12.3: ignored, skipping...                                                                                                                                         - cryptography==2.8: Warning! Using precompiled lambda package version 1.9 instead!                                                                                          - coverage==4.5.4: ignored, skipping...                                                                                                                                      - cffi==1.13.2: Using locally cached manylinux wheel                                                                                                                         - sqlite==python3: Using precompiled lambda package                                                                                                                         Packaging project as zip.

GitHub Issues

I have not opened a GitHub issue first, I'm happy to do it if it's really required, but a PR likely describes more what I want to do :)

Exclude pre-compiled packages matching excludes list

fa76166

There are some locally installed packages I don't want to install on mylambda function, such as coverage or mypy for instance. This changeprevents ignored packages from being included in the final ZIP file, savingme about 30% of the lambda size.