Compare development environments
diffenv gathers and compares development environments. It defines a simple standard for storing a complete picture of an environment as a structured collection of facets such as "python", "shell", "git", etc.
Output your current environment
#$ diffenv python: python-version: Python 3.7.3 shell: envvars: EDITOR: sublw GIT_EDITOR: subl -w PRISMA_ENDPOINT: http://prisma:4466 GOOGLE_API_KEY(HASHED): 603ade004ce4bb13c3f66bc1644164ca(HASH) os: timezone: 0200 version: Darwin 18.7.0 x86_64 # ...trimmed
(Simplified example. See full example here)
You can also get just specific facets:
# Get all python-relevant information diffenv --facet python # List environment variables diffenv -f shell:envvars
Share your environment with co-worker
#$ diffenv --share Your env was uploaded to: https://transfer.sh/P1gQZ/env.yaml Run the following line on comparison environment: diffenv --compare https://transfer.sh/P1gQZ/env.yaml
Diff your environment with co-worker
#$ diffenv --compare https://transfer.sh/P1gQZ/env.yaml git: git-user-name: - <<-: Stan James + +>>: Gabriel Pickard version: - <<-: git version 2.22.0 + +>>: git version 2.11.0 os: version: - <<-: Darwin 18.7.0 x86_64 + +>>: Linux 4.19.34-04457-g5b63d4390e96 x86_64 python: python-version: - <<-: Python 3.7.3 + +>>: Python 2.7.13 python3-version: - <<-: Python 3.7.3 + +>>: Python 3.5.3 which-python: - <<-: /usr/local/opt/python/libexec/bin/python + +>>: /usr/bin/python # ...trimmed
Include environment in submitted issues
If you are an open-source project maintainer you can use diffenv to structure the submission of bug reports. Tell your users to specify the conditions under which their bug occurs by sending along their diffenv output. This way you can get significantly more detailed insight from the get-go without having to go back and forth with the reporter of the bug.
For github issues we provide a handy way to submit a new issue and include a local diffenv dump directly from the command line.
#$ diffenv --issue # Browser will open a Github issue with env data automatically added:
Compare with past commits
#$ diffenv --compare .diffenv/commits/2b19c9e47af0828c8775ee231768631e0b06ae0f.diffenv git: version: - <<-: git version 2.11.0 + +>>: git version 2.22.0 python: python-version: - <<-: Python 3.7 + +>>: Python 3.7.3
Note this requires the git commit hooks to have been installed, so that diffenv is run on each commit.
#$ diffenv --add-hooks
python3 -m pip install diffenv
Currently diffenv only supports Python 3.
To output your current development environment to stderr:
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:
For a complete list of command line options run:
$ diffenv --help usage: diffenv [-h] [-o OUTPUT] [-c COMPARE] [--add-hooks] [--share] [--issue] [--post POST] [--config CONFIG] [--ignore-config] [--no-color] [--no-paging] [--version] [-f FACET] Diff your total environment. Run without any params to simply output current environment state as YAML. optional arguments: -h, --help show this help message and exit -o OUTPUT, --output OUTPUT output to file instead of stdout -c COMPARE, --compare COMPARE file or URL to compare against the current env --add-hooks install git hooks in current repo and exit --share store current env and return URL that can be shared --issue create github issue --post POST POST env to specific URL when sharing; must be used with --share --config CONFIG load config from specific file --ignore-config ignore configs and run all facets --no-color don't color diff output --no-paging don't use less for paging output --version display version and exit -f FACET, --facet FACET run a specific facet More information and source code at https://github.com/error-central/diffenv
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 for a git repo should be saved in
The facet file itself needs to be excutable (
chmod +x <yourfacet>).
You can limit which facets are run with a yaml file saved in
Here's an example config:
# Currently there is only one relevant part of the config, facets. facets: # If you give the name of a directory, it will run all facets in it. # In this case, we'll run every facet within `python`. python: # ...or you can list all the way down to the facet within a directory. # Here we'll only run the `node-version` facet. nodejs: node-version: git: os: shell: # You can also provide command line arguments as list to the facet. # In this case we pass the `shell` facet a whitelist of environment # variables to show. envvars: - DISPLAY - USER - PATH - PWD - HOME - SHELL - COLORTERM - TERM directory: # In this case we restrict how deep we recur into child directories listing: 1
Contributing to diffenv
If you are developing locally, do not install as above, and instead run the following in the repo root directory:
# Remove global installation of diffenv, if present pip3 uninstall diffenv # depending on your setup you may have to prefix sudo to this command pip3 install --editable .
diffenv will always point to your local repo, including any changes.
python3 -m unittest tests/tests.py
For testing on docker containers:
docker pull python docker run -it python bash # Now e.g. `pip install diffenv`
Creating a release
setup.py and bump the version, then:
python3 setup.py sdist # modify the below to match the file of the version you just created twine upload dist/diffenv-
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