BSD Pro-Nuke

(Public Domain/CC0) 2025 Chris DeBoy

Rationale:

This is a license designed with the explicit intent to incentivise getting code placed under this license to be used in nuclear energy applications, as it places the code under copyleft restrictions, which are rendered void if the code is ever used in a nuclear setting.

That, and to poke fun at so-called "open source" licenses that include an anti-nuclear clause.

License Text:

Copyright [year] [copyright holder]

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  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.
  3. Any derivative works or works incorporating this source code must make their complete source code publicly available under this same license if binaries are distributed.
  4. If verifiable public documentation demonstrates that this source code or any derivative work has been utilized in the operation or production of a nuclear power plant or nuclear weapon, all conditions of this license are permanently waived for all users worldwide. The code may then be used, modified, and distributed without any restrictions whatsoever.

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.