Vcs is released under the terms of the LGPL-3.0-or-later WITH LGPL-3.0-linking-exception license.
This notice file contains more details, as well as document the organization of files and headers that relate to licenses.
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COPYING.HEADER contains the copyright and license notices. It is added as a header to every file in the project.
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COPYING contains a copy of the full GPL-3.0 license
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COPYING.LESSER contains a copy the full LGPL-3.0 license
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COPYING.LINKING contains a copy of the LGPL-3.0-linking-exception notice.
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NOTICE.md (this file) documents the project licensing.
To spawn processes in Eio and collect their output we've copied some code from the Eio_process project. The Eio_process project is released under MIT.
The file where we make use of this code is lib/vcs_git_eio/src/runtime.ml. We've added a notice in the file and a comment next to the code that was copied and modified, which includes Eio_process's original LICENSE:
MIT License
Copyright (c) 2023 Mathieu Barbin
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
We copied the implementation of the function Base.String.split_lines from the Base project. Base is released under MIT.
The file where we imported the function is lib/vcs/src/import.ml. We've added a notice in the file and a comment next to the code that was copied and modified, which includes Base's original LICENSE:
The MIT License
Copyright (c) 2016--2024 Jane Street Group, LLC <[email protected]>
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
In 2016-2017, Jane Street released on GitHub an internal code review system named Iron.
Iron includes functionality for interacting with Mercurial repositories. Vcs is not a code review system, but since it is a library that implements Git interaction, it has similarities with that specific Mercurial part of Iron.
Iron was released under the terms of the Apache 2.0 License.
We've included a copy of the Apache-2.0 License in the repository here
We're referring to the Iron source code as of v0.9.114.44+47, revision dfb106cb82abf5d16e548d4ee4f419d0994d3644.
For a few modules within the Vcs library, we've taken some inspiration from Iron. As such, these parts of Vcs may be regarded as constituting a "Derivative Work" as defined by the Apache-2.0 License.
Iron targets Mercurial, and also the source code has various dependencies (e.g. core) which are not Vcs dependencies, thus including code from Iron directly would probably not compile and not achieve the desired behavior. Thus, we have not copied large portions of code directly. By "inspiration", we mean that we have used the Iron code as an external reference, sometimes taking small portions of code, function names or types, and modifying and adapting it for the purpose of Vcs.
The files in question carry prominent notices stating that their contents is partially derived from files from the Iron project. We include the path of said files relative to the root of the Iron project repository, as well as a description of the changes made.
For example, in addition to the vcs project header, such file would carry the following extra header:
(* This module is partially derived from Iron (v0.9.114.44+47), file
* [./path/to/file], which is released under Apache 2.0:
*
* Copyright (c) 2016-2017 Jane Street Group, LLC <[email protected]>
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
* See the file `NOTICE.md` at the root of this repository for more details.
*
* Changes: ...
*)The exact list of modules that are partially derived from Iron is as follows:
- lib/vcs/src/name_status
- lib/vcs/src/path_in_repo
- lib/vcs/src/repo_root