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CONTRIBUTING: Add licensing details (#1994) #2493

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Jul 11, 2021
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28 changes: 28 additions & 0 deletions CONTRIBUTING.md
Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,8 @@ search the issues to make sure no one else is working on it.
1. The code must be clippy-warning-free and rustfmt-compliant.
1. Don't hesitate to move common functions into uucore if they can be reused by other binaries.
1. Unsafe code should be documented with Safety comments.
1. uutils is original code. It cannot contain code from existing GNU or Unix-like
utilities, nor should it link to or reference GNU libraries.

## Commit messages

Expand Down Expand Up @@ -82,3 +84,29 @@ uutils: add new utility
```
gitignore: add temporary files
```

## Licensing

uutils is distributed under the terms of the MIT License; see the `LICENSE` file
for details. This is a permissive license, which allows the software to be used
with few restrictions.

Copyrights in the uutils project are retained by their contributors, and no
copyright assignment is required to contribute.

If you wish to add or change dependencies as part of a contribution to the
project, a tool like `cargo-license` can be used to show their license details.
The following types of license are acceptable:

* MIT License
* Dual- or tri-license with an MIT License option ("Apache-2.0 or MIT" is a popular combination)
* "MIT equivalent" license (2-clause BSD, 3-clause BSD, ISC)
* License less restrictive than the MIT License (CC0 1.0 Universal)

Licenses we will not use:

* An ambiguous license, or no license
* Strongly reciprocal licenses (GNU GPL, GNU LGPL)

If you wish to add a reference but it doesn't meet these requirements, please
raise an issue to describe the dependency.