Pipsync

Pipsync is a utility to help keep requirements.txt files in sync with a parent Pipfile for Serverless Application Model (SAM) projects.

Installation and Usage

Pipsync will be published on PyPI in the future.

Install Pipsync from GitHub:

% pip install git+git://github.com/brysontyrrell/pipsync

SAM Project Structure

Pipsync is opinionated on how serverless projects are structured. The directory tree below is an example.

At the root the repository are the Pipfile and Pipfile.lock which manage the local development environment. Within the project directories for the various Lambda Functions with their respective requirements.txt files used by sam build.

The locations of the Lambda Functions are not important and these directories can be structured as you wish.

MyApp/
├── src/
│   ├── function_A
│   │   ├── index.py
│   │   └── requirements.txt
│   └── function_B
│       ├── index.py
│       └── requirements.txt
├── Pipfile
├── Pipfile.lock
└── template.yaml

CLI Options

After installing, view Pipsync's options by running pipsync -h:

usage: pipsync [-h] [-x EXCLUDE] [-f] [--dev] [-v] [--version] PATH

Sync requirements.txt files with a project Pipfile.

positional arguments:
  PATH                  Project root / Pipfile location

optional arguments:
  -h, --help            show this help message and exit
  -x EXCLUDE, --exclude EXCLUDE
                        Exclude top level directories from requirements.txt file search
  -f, --force           Remove packages in requirements.txt files that are not in the Pipfile
  --dev                 Include dev-packages from Pipfile.
  -v, --verbose         Verbose console output.
  --version             show program's version number and exit

Pipsync will scan the Pipfile for all of the top-level packages you have installed. It will then scan for requirements.txt files within the directory structure. From there, Pipsync will read each file, compare it to the top-level package list, and re-write using the pinned versions in Pipfile.lock.

Force Sync

By default, Pipsync will ignore packages in requirements.txt files that are not listed in your Pipfile. These packages will be passed back in without a pinned version. Use the -f/--force argument to remove packages in requirements.txt that are not found in your Pipfile.

Dev Packages

By default, Pipsync will not include dev-packages from your Pipfile when syncing. Use the --dev argument to include them.

Use With Editors and IDEs

• Pycharm (macOS) FileWatcher