How to get licenses of just built package

[BastianZim]

Hi everybody,

I have a question about extracting the license of a freshly built package.

Background is, that I would like to add this tool to the conda-forge docs to make it easier for maintainers to correctly include go licenses.

The collection of licenses would therefore be right after a package is built with the ideal process being the following:

1. Conda-build builds the package

2. go-licenses downloads all licenses

3. conda-build includes the output folder in the package and finishes packaging it.

Step 1. and 3. is taken care of by our infrastructure but 2. fails with

Error: errors for ["github.com/mozilla/sops"]:
github.com/mozilla/sops: -: no required module provides package github.com/mozilla/sops; to add it:
    go get github.com/mozilla/sops

Logs: https://dev.azure.com/conda-forge/feedstock-builds/_build/results?buildId=479803&view=logs&jobId=656edd35-690f-5c53-9ba3-09c10d0bea97&j=656edd35-690f-5c53-9ba3-09c10d0bea97&t=e5c8ab1d-8ff9-5cae-b332-e15ae582ed2d

The script for this is:

script:
     - pushd {{ pkg_src }}
     - make install
     - go-licenses save "github.com/mozilla/sops" --save_path="go_licenses"

Ref: https://github.com/conda-forge/go-sops-feedstock/pull/9/files

And the PR where I tried this is https://github.com/conda-forge/go-sops-feedstock/pull/9

Therefore, my question would be:

1. How do I need to include go-licenses in the workflow so that everything is captured?

2. And additionally, the docs include / before the folder where the output is stored. Is that OS-specific, or is that correctly translated for Win? Ref: https://github.com/google/go-licenses#complying-with-license-terms

[Bobgy]

Hi @BastianZim, just sharing my guesses first:

1. in the environment, can you build the same go package? go-licenses must be run in an environment with full go development env and dependencies are downloaded (go mod download)
2. Is the root package "github.com/mozilla/sops" buildable as a binary? If not, you might want to choose between all subpackages "github.com/mozilla/sops/..." or specify the package of the built go binary explicitly "github.com/mozilla/sops/cmd/some-cli".

[Bobgy]

2. And additionally, the docs include / before the folder where the output is stored. Is that OS-specific, or is that correctly translated for Win? Ref: https://github.com/google/go-licenses#complying-with-license-terms

Yes, that's OS-specific. I'm not sure whether go-licenses work properly in windows, recommend reporting a separate issue if you hit any problems.

[Bobgy]

FYI, I just revamped documentation in https://github.com/google/go-licenses/pull/111, if you still have anything unclear.

[BastianZim]

Working now with the new docs, thanks!