chore: Change to BSD-3-Clause license

CHANGES.rst

@@ -99,6 +99,11 @@ Release 4.0.0 [2024-XX-XX]
 
 * Miscellaneous:
 
+  + The project is now licenced under the BSD-3-Clause license. This
+    change is fairly inconsequential for users and distributors. It
+    simply adds an additional clause against using contributor names
+    for promotional purposes without their consent.
+
   + Add a new guidelines section to documentation laying out new fair
     play rules. These rules ask companies and outside developers to
     refrain from reusing the ``mpi4py`` name in unaffiliated projects,

CITATION.cff

@@ -3,7 +3,7 @@ message: Please cite this software using the metadata from 'preferred-citation'.
 
 title: MPI for Python
 abstract: Python bindings for MPI
-license: BSD-2-Clause
+license: BSD-3-Clause
 url: https://mpi4py.github.io
 doi: 10.5281/zenodo.5645087
 repository-code: https://github.com/mpi4py/mpi4py

LICENSE.rst

@@ -1,24 +1,26 @@
-Copyright (c) 2024, Lisandro Dalcin.
+Copyright (c) 2024, Lisandro Dalcin
 
 Redistribution and use in source and binary forms, with or without
-modification, are permitted provided that the following conditions
-are met:
+modification, are permitted provided that the following conditions are met:
 
-* Redistributions of source code must retain the above copyright
-  notice, this list of conditions and the following disclaimer.
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
 
-* Redistributions in binary form must reproduce the above copyright
-  notice, this list of conditions and the following disclaimer in the
-  documentation and/or other materials provided with the distribution.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
 
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
-"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+3. Neither the name of the copyright holder nor the names of its contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

conf/metadata.py

@@ -45,7 +45,7 @@ def get_readme(settings=None):  # noqa: ARG001
 
 description = "Python bindings for MPI"
 requires_python = ">=3.6"
-license = "BSD-2-Clause"
+license = "BSD-3-Clause"
 authors = [
     {"name": "Lisandro Dalcin", "email": "[email protected]"},
 ]

conf/metadata.toml

@@ -3,7 +3,7 @@ name = "mpi4py"
 dynamic = ["version", "readme"]
 description = "Python bindings for MPI"
 requires-python = ">=3.6"
-license = {text = 'BSD-2-Clause'}
+license = {text = 'BSD-3-Clause'}
 authors = [
   {name = "Lisandro Dalcin", email = "[email protected]"},
 ]

meson.build

@@ -9,7 +9,7 @@ project(
     files('conf' / 'metadata.py'), 'version',
     check: true,
   ).stdout().strip(),
-  license: 'BSD-2-Clause',
+  license: 'BSD-3-Clause',
   meson_version: '>=1.0.0',
 )