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russellmcdonell / pyDMNrules

An implementation of DMN (Decision Model Notation) in Python
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change: switch LICENSE from GPL3.0 to MIT for commercial purposes. #13

Closed airscripts closed 1 year ago

airscripts commented 1 year ago

Hi Russell.

I've opened this PR in order to ask to you if are you willing to update your LICENSE file from GPL3.0 to MIT to make pyDMNrules as open as possible in terms of commerciality and usage.

Let me know if you're willing to update it. Thanks for your contribute.

russellmcdonell commented 1 year ago

Can you explain the difference, and any commercial restrictions with GPL3.0?

Russell McDonell

On Thu, 29 Dec 2022 at 05:25, Francesco Sardone @.***> wrote:

Hi Russell.

I've opened this MR in order to ask to you if are you willing to update your LICENSE file from GPL3.0 to MIT to make pyDMNrules as open as possible in terms of commerciality and usage.

Let me know if you're willing to update it. Thanks for your contribute.

You can view, comment on, or merge this pull request online at:

https://github.com/russellmcdonell/pyDMNrules/pull/13 Commit Summary

File Changes

(1 file https://github.com/russellmcdonell/pyDMNrules/pull/13/files)

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— Reply to this email directly, view it on GitHub https://github.com/russellmcdonell/pyDMNrules/pull/13, or unsubscribe https://github.com/notifications/unsubscribe-auth/AECWZEULLPTFFMXKYGX3ZJ3WPSAYFANCNFSM6AAAAAATLO7RC4 . You are receiving this because you are subscribed to this thread.Message ID: @.***>

airscripts commented 1 year ago

Sure. Thanks in advance for your time.

Since GPL-3.0 is a copyleft license, everyone using pyDMNrules have to use the same identical license. Moreover the source code has to be disclosed.

With MIT license, the one I'm proposing to you: you're completely free to keep software using pyDMNrules closed or open or even to keep the same license or change it.

It would be really useful for the closed source projects that want to implement it.

Resources: https://choosealicense.com/

airscripts commented 1 year ago

Any update on this @russellmcdonell?

russellmcdonell commented 1 year ago

Yes, I have thought about this long and hard. Firstly Python itself is sort of GPL like licensed. Then there's the module pyDMNrules uses, such as pySFeel and SLY and there's no point in making pyDMNrules incompatible with those licenses. I guess, more importantly, is the fact that pyDMNrules isn't meant to be commercial. It's meant to be an "introduction to DMN" for beginners. There's no optimization, so it will be slow. People were supposed to play with pyDMNrules and the transition to one of the commercial products like OpenRules. HOWEVER, my main concern was respect for David Beasley who wrote SLY, without which this project would never have got off the ground. And the SLY license is MIT like. And I wrote pySFeel, so I have changed the licenses on both pySFeel and pyDMNrules to an MIT like license - basically do what you want, just don't mention my name.

airscripts commented 1 year ago

My deepest gratitude for this change and also for the time you gave me for the detailed explanation.