Conda environment: Print licenses of installed packages

Question

is there an easy way to print the license of each package in a conda environment?

conda list nicely lists all packages, however there is no option to get information about the license. On Anaconda the license is shown.

I tried to find the licenses in each package folder, but was not lucky. Is the only option to look at each package individually on Anaconda.org?

Conda version 4.6.14

Thanks

Answer 1

You can find it in the JSON files under the conda-meta folder in each env. The key license is in the main object, if you're looking to parse the JSON. Otherwise, you can get a quick look with:

grep '"license":' conda-meta/*.json

which outputs the following (abridged) for me:

conda-meta/aioeasywebdav-2.4.0-py37_1000.json:  "license": "ISC",
conda-meta/aiohttp-3.5.4-py37h1de35cc_0.json:  "license": "Apache 2.0",
conda-meta/appdirs-1.4.3-py37h28b3542_0.json:  "license": "MIT",
conda-meta/appnope-0.1.0-py37_0.json:  "license": "BSD 2-Clause",
conda-meta/asn1crypto-0.24.0-py37_0.json:  "license": "MIT",
...
conda-meta/xz-5.2.4-h1de35cc_4.json:  "license": "LGPL-2.1 and GPL-2.0",
conda-meta/yaml-0.1.7-hc338f04_2.json:  "license": "MIT",
conda-meta/yarl-1.3.0-py37h1de35cc_0.json:  "license": "Apache 2.0",
conda-meta/zeromq-4.2.5-h0a44026_1.json:  "license": "LGPL 3",
conda-meta/zlib-1.2.11-h1de35cc_3.json:  "license": "zlib",