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CONTRIBUTING.md

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Contributing to Git Large File Storage

Hi there! We're thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.

Contributions to this project are released to the public under the project's open source license.

This project adheres to the Open Code of Conduct. By participating, you are expected to uphold this code.

Feature Requests

Feature requests are welcome, but will have a much better chance of being accepted if they meet the first principles for the project. Git LFS is intended for end users, not Git experts. It should fit into the standard workflow as much as possible, and require little client configuration.

  • Large objects are pushed to Git LFS servers during git push.
  • Large objects are downloaded during git checkout.
  • Git LFS servers are linked to Git remotes by default. Git hosts can support users without requiring them to set up anything extra. Users can access different Git LFS servers like they can with different Git remotes.
  • Upload and download requests should use the same form of authentication built into Git: SSH through public keys, and HTTPS through Git credential helpers.
  • Git LFS servers use a JSON API designed around progressive enhancement. Servers can simply host off cloud storage, or implement more efficient methods of transferring data.

Project Management

The Git LFS project is managed completely through this open source project. The milestones show the high level items that are prioritized for future work. Suggestions for major features should be submitted as a pull request that adds a markdown file to docs/proposals discussing the feature. This gives the community time to discuss it before a lot of code has been written.

The Git LFS teams mark issues and pull requests with the following labels:

  • bug - An issue describing a bug.
  • enhancement - An issue for a possible new feature.
  • review - A pull request ready to be reviewed.
  • release - A checklist issue showing items marked for an upcoming release.

Branching strategy

In general, contributors should develop on branches based off of master and pull requests should be to master.

Submitting a pull request

  1. Fork and clone the repository
  2. Configure and install the dependencies: make
  3. Make sure the tests pass on your machine: make test
  4. Create a new branch based on master: git checkout -b <my-branch-name> master
  5. Make your change, add tests, and make sure the tests still pass
  6. Push to your fork and submit a pull request from your branch to master
  7. Pat yourself on the back and wait for your pull request to be reviewed

Here are a few things you can do that will increase the likelihood of your pull request being accepted:

  • Follow the style guide where possible.
  • Write tests.
  • Update documentation as necessary. Commands have man pages.
  • Keep your change as focused as possible. If there are multiple changes you would like to make that are not dependent upon each other, consider submitting them as separate pull requests.
  • Write a good commit message.

Building

Prerequisites

Git LFS depends on having a working Go 1.11.0+ environment.

On RHEL etc. e.g. Red Hat Enterprise Linux Server release 7.2 (Maipo), you will neet the minimum packages installed to build Git LFS:

$ sudo yum install gcc
$ sudo yum install perl-Digest-SHA

In order to run the RPM build rpm/build_rpms.bsh you will also need to:

$ sudo yum install ruby-devel

(note on an AWS instance you may first need to sudo yum-config-manager --enable rhui-REGION-rhel-server-optional)

Building Git LFS

The easiest way to download Git LFS for making changes is git clone:

$ git clone git@github.com:git-lfs/git-lfs.git
$ cd git-lfs

From here, run make to build Git LFS in the ./bin directory. Before submitting changes, be sure to run the Go tests and the shell integration tests:

$ make test          # runs just the Go tests
$ cd t && make test  # runs the shell tests in ./test
$ script/cibuild     # runs everything, with verbose debug output

Updating 3rd party packages

  1. Update go.mod.
  2. Run make vendor to update the code in the vendor directory.
  3. Commit the change. Git LFS vendors the full source code in the repository.
  4. Submit a pull request.

Releasing

If you are the current maintainer, see the release howto for how to perform a release.

Resources