COPYRIGHT

Intellectual Property Notice
------------------------------

Spack is licensed under the Apache License, Version 2.0 (LICENSE-APACHE
or https://www.apache.org/licenses/LICENSE-2.0) or the MIT license,
(LICENSE-MIT or https://opensource.org/licenses/MIT), at your option.

Copyrights and patents in the Spack project are retained by contributors.
No copyright assignment is required to contribute to Spack.

Spack was originally developed in 2013 by Lawrence Livermore National
Security, LLC. It was originally distributed under the LGPL-2.1 license.
Consent from contributors to relicense to Apache-2.0/MIT is documented at
https://github.com/spack/spack/issues/9137.


SPDX usage
------------

Individual files contain SPDX tags instead of the full license text.
This enables machine processing of license information based on the SPDX
License Identifiers that are available here: https://spdx.org/licenses/

Files that are dual-licensed as Apache-2.0 OR MIT contain the following
text in the license header:

    SPDX-License-Identifier: (Apache-2.0 OR MIT)


External Packages
-------------------

Spack bundles most external dependencies in `lib/spack/spack/vendor/`.
This directory is automatically maintained using the `vendoring` tool.
Spack also includes other vendored components like `ast.unparse` (in
`lib/spack/spack/util/unparse/`), `sbang` (in `lib/spack/spack/hooks/`
and `bin/`), and `spack.util.ctest_log_parser`. These packages are
covered by various permissive licenses. A summary listing follows.
See the license included with each for full details.

PackageName: altgraph
PackageHomePage: https://altgraph.readthedocs.io/en/latest/index.html
PackageLicenseDeclared: MIT

PackageName: archspec
PackageHomePage: https://github.com/archspec/archspec
PackageLicenseDeclared: Apache-2.0 OR MIT

PackageName: ast.unparse
PackageHomePage: https://www.python.org/
PackageLicenseDeclared: PSF-2.0

PackageName: attr
PackageHomePage: https://www.attrs.org/
PackageLicenseDeclared: MIT

PackageName: attrs
PackageHomePage: https://www.attrs.org/
PackageLicenseDeclared: MIT

PackageName: ctest_log_parser
PackageHomePage: https://github.com/Kitware/CMake
PackageLicenseDeclared: BSD-3-Clause

PackageName: distro
PackageHomePage: https://pypi.python.org/pypi/distro
PackageLicenseDeclared: Apache-2.0

PackageName: jinja2
PackageHomePage: https://pypi.python.org/pypi/Jinja2
PackageLicenseDeclared: BSD-3-Clause

PackageName: jsonschema
PackageHomePage: https://pypi.python.org/pypi/jsonschema
PackageLicenseDeclared: MIT

PackageName: macholib
PackageHomePage: https://macholib.readthedocs.io/en/latest/index.html
PackageLicenseDeclared: MIT

PackageName: markupsafe
PackageHomePage: https://pypi.python.org/pypi/MarkupSafe
PackageLicenseDeclared: BSD-3-Clause

PackageName: pyrsistent
PackageHomePage: https://github.com/tobgu/pyrsistent
PackageLicenseDeclared: MIT

PackageName: ruamel.yaml
PackageHomePage: https://yaml.readthedocs.io/
PackageLicenseDeclared: MIT

PackageName: sbang
PackageHomePage: https://github.com/spack/sbang
PackageLicenseDeclared: Apache-2.0 OR MIT

PackageName: six
PackageHomePage: https://pypi.org/project/six/
PackageLicenseDeclared: MIT

PackageName: typing_extensions
PackageHomePage: https://pypi.org/project/typing-extensions/
PackageLicenseDeclared: Python-2.0