diffenv 0.2.1

Compare development environments

diffenv

Output and compare all facets of development environments.

Overview

diffenv gathers and compares runtime environment metadata. A standard way of capturing a complete picture of a development environment.

Simplified example

$ diffenv
python:
  python-version: Python 3.7.3
shell:
  envvars:
    EDITOR: sublw  
    GIT_EDITOR: subl -w
    API_ENDPOINT: http://api.lvh.me:4000
    PRISMA_ENDPOINT: http://prisma:4466
os:
  timezone: 0200
  version: Darwin 18.7.0 x86_64

Full example output.

Use cases

• Add environment data to bug reports in a standardized format. Example
• Diagnose what subtle difference is making things fail on your coworker's machine.
• Compare your current environment against past recorded state when things still worked.

Installation

python3 -m pip install diffenv

Currently diffenv only supports Python 3.

Use

To output your current development environment to stderr:

diffenv

To compare your environment with @werg:

diffenv -c https://raw.githubusercontent.com/error-central/diffenv/master/examples/gabe_env.yaml

To share your environment with a coworker for comparison:

diffenv --share

For a complete list of command line options run:

diffenv --help

Customization

diffenv can be customized for a user or for a repo. Customizations are put in a directory named .diffenv in the user's home directory or the git repos top directory.

Custom Facets

Custom facets for a git repo should be saved in .diffenv/facets/<yourfacet>

The facet file itself needs to be excutable (chmod +x <yourfacet>).

Configuration

You can limit which facets are run with a yaml file saved in .diffenv/config.yaml

See example_config.yaml for more information.

Contributing to diffenv

Development install

If you are developing locally, do not install as above, and instead run the following in the repo root directory:

# depending on your setup you may have to prefix sudo to this command
pip install --editable .

Now diffenv will always point to your local repo, including any changes.