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Contributing to Portus

Reporting issues

Before reporting an issue, please check the documentation and our mailing list. It might contain all the information you need for your specific problem.

Moreover, check whether it has already been reported here. If this is the case, please:

  • Read all the comments to confirm that it's the same issue you're having.
  • Refrain from adding "same thing here" or "+1" comments. Just hit the "subscribe" button to get notifications for this issue.
  • Add a comment only if you can provide helpful information that has not been provided in the discussion yet.

Check for assigned people

We are using Github Issues for submitting known issues (e.g. bugs, features, etc.). Some issues will have someone assigned, meaning that there's already someone that takes responsability for fixing said issue. This is not done to discourage contributions, rather to not step in the work that has already been done by the assignee. If you want to work on a known issue with someone already assigned to it, please consider contacting the assignee first (e.g. by mentioning the assignee in a new comment on the specific issue). This way you can contribute with ideas, or even with code if the assignee decides that you can step in.

If you plan to work on a non assigned issue, please add a comment on the issue to prevent duplicated work.

Provide tests

In Portus we are really committed to keep a thorough test suite. For this reason, any new Pull Request always has to provide tests for the change that is being made. The spec directory is full of tests that might serve as an example if you are not sure how to implement tests for your Pull Request. Moreover, we make use of Travis-CI, so we will only merge your Pull Request once we get a green light from Travis.

You might want to take a look at this section from the wiki where our test infrastructure is more thoroughly explained.

Mind the Style

We believe that in order to have a healthy codebase we need to abide to a certain code style. We use rubocop for this matter, which is a tool that has proved to be useful. So, before submitting your Pull Request, make sure that rubocop is passing for you. If you want to know the style we are enforcing, note the following:

  • We mainly use the default configuration as stated here.
  • We've made some small changes to the defaults, as you can see here. Moreover, note that all these changes have a comment explaining the reasoning behind it.

Finally, note that rubocop is called on Travis-CI. This means that your Pull Request will not be merged until rubocop approves your changes.

Sign your work

The sign-off is a simple line at the end of the explanation for the patch. Your signature certifies that you wrote the patch or otherwise have the right to pass it on as an open-source patch. The rules are pretty simple: if you can certify the below (from

Developer Certificate of Origin
Version 1.1

Copyright (C) 2004, 2006 The Linux Foundation and its contributors.
660 York Street, Suite 102,
San Francisco, CA 94110 USA

Everyone is permitted to copy and distribute verbatim copies of this
license document, but changing it is not allowed.

Developer's Certificate of Origin 1.1

By making a contribution to this project, I certify that:

(a) The contribution was created in whole or in part by me and I
    have the right to submit it under the open source license
    indicated in the file; or

(b) The contribution is based upon previous work that, to the best
    of my knowledge, is covered under an appropriate open source
    license and I have the right under that license to submit that
    work with modifications, whether created in whole or in part
    by me, under the same open source license (unless I am
    permitted to submit under a different license), as indicated
    in the file; or

(c) The contribution was provided directly to me by some other
    person who certified (a), (b) or (c) and I have not modified

(d) I understand and agree that this project and the contribution
    are public and that a record of the contribution (including all
    personal information I submit with it, including my sign-off) is
    maintained indefinitely and may be redistributed consistent with
    this project or the open source license(s) involved.

Then you just add a line to every git commit message:

Signed-off-by: Joe Smith <>

Use your real name (sorry, no pseudonyms or anonymous contributions.)

If you set your and git configs, you can sign your commit automatically with git commit -s.