Any new open source software is always a net positive.
But, there are a few small caveats to the way they’ve done it (depending on how cynical/cautious you are):
Because Proton are not accepting contributions, they own all the copyright, so can make the code closed source again if they want to (that wouldn’t affect the already released versions, but future versions)
They could likely take down any derivative on iOS, since Apple will always take instruction from the copyright holder, for GPL’d code
Since the builds are not reproducible, there’s no guarantee that the binaries they distribute are built from the source code
“Because Proton are not accepting contributions, they own all the copyright, so can make the code closed source again if they want to (that wouldn’t affect the already released versions, but future versions)”
They can’t do that actually. They can close the source, yes, but if they do they can’t then release the new closed-source version to the public.
Does the GPL require that source code of modified versions be posted to the public?
The GPL does not require you to release your modified version, or any part of it. You are free to make modifications and use them privately, without ever releasing them. This applies to organizations (including companies), too; an organization can make a modified version and use it internally without ever releasing it outside the organization.
But if you release the modified version to the public in some way, the GPL requires you to make the modified source code available to the program’s users, under the GPL. [Emboldened by me.]
Can the developer of a program who distributed it under the GPL later license it to another party for exclusive use?
No, because the public already has the right to use the program under the GPL, and this right cannot be withdrawn.
“They could likely take down any derivative on iOS, since Apple will always take instruction from the copyright holder, for GPL’d code”
Does the license prohibit this? Definitely. Could they get away with it? Probably. Though I’m uncertain Proton would go that far. I mean, if they wanted to prevent forks, they wouldn’t have released the source, let alone with the GPL3 license, which requires the right to make modifications (as that’s one of the Four Freedoms).
“Since the builds are not reproducible, there’s no guarantee that the binaries they distribute are built from the source code”
Technically true, I suppose, though again why they would do that is beyond me. If they didn’t want forks, they likely wouldn’t have allowed forks.
Again, this is all assuming I’m understanding the GPL FAQ page correctly. If I’m wrong, I would welcome someone smarter than me to correct me. :)
The way I understand it is that they can relicense it and then publish it if they want, but the GPL would still fully apply to the previous versions.
The first question you cited seems to refer to any different organisation/individual making changes to the source code. And the second seems to refer to revoking the GPL for an already released version, which they would of course not be allowed to do.
This would make sense as ownership of the copyright would supersede a license.
“releasing the modified version to the public” would cover them re-closing the source and then subsequently releasing that newly closed source, so they can’t relicense it and then release the built version of the code.
At least not easily, this is where court history would likely need to be visited because the way it’s worded the interpretability of “modified” in this context would need to be examined.
Not a lawyer but in the scenario where proton closed the source but kept offering the build, even if gpl3 still applies since they’re the only copyright holder (no contributions) it’d only give them grounds to sue themselves?
The GNU licenses are copyright licenses; free licenses in general are based on copyright. In most countries only the copyright holders are legally empowered to act against violations.
IANAL, but AFAIK that’s incorrect. If you’re the only copyright holder, you can issue multiple licenses for your work. GPL doesn’t allow you to rescind previous issues, so anyone in possession of your GPL code can still modify and release it under the GPL freely. But it doesn’t prevent you from issuing your own work under a different license.
There isn’t usually much economic sense for most applications to do that because anyone can fork the project and distribute it for free. For Proton, since they still hold the server as closed source, they could simply introduce a breaking protocol change and all the forks would be useless.
It’s pretty much not reversible and the code is free to use, modify, and distribute forever. And if you do modify it you also must make those changes open source.
gpl v3 you can do pretty much anything but you have to put it the same license but it has like drm protections and Anti-Tivoization and also has some patent protections people find this license too strict
English isn’t my first language. I share your opinion regarding the license. Which connector would you use instead of “but” to indicate that you succeeded in your efforts even though it was harder you thought it would be?
English is my only language, and yours looks fine to me. I thought it was pretty clear from the first comment that the “but” indicated success despite difficulties, and as you clarified that’s exactly what you meant.
If you study non violent communication, folks will say to avoid using “I agree with you, but”. Because as soon as you say " but ", people get defensive and stop listening to you.
Whenever possible, replace “but” with “and” if the sentence still has the same meaning
It took me going to their GitHub to find out, but it’s GPL 3.
really appreciate you reporting back, thanks for sharing!
What does this mean practically
It means it can’t ever become proprietary closed-source software (not without a major lawsuit).
Any new open source software is always a net positive.
But, there are a few small caveats to the way they’ve done it (depending on how cynical/cautious you are):
They can’t do that actually. They can close the source, yes, but if they do they can’t then release the new closed-source version to the public.
From the GPL FAQ page:
Alternatively:
Does the license prohibit this? Definitely. Could they get away with it? Probably. Though I’m uncertain Proton would go that far. I mean, if they wanted to prevent forks, they wouldn’t have released the source, let alone with the GPL3 license, which requires the right to make modifications (as that’s one of the Four Freedoms).
Technically true, I suppose, though again why they would do that is beyond me. If they didn’t want forks, they likely wouldn’t have allowed forks.
Again, this is all assuming I’m understanding the GPL FAQ page correctly. If I’m wrong, I would welcome someone smarter than me to correct me. :)
The way I understand it is that they can relicense it and then publish it if they want, but the GPL would still fully apply to the previous versions.
The first question you cited seems to refer to any different organisation/individual making changes to the source code. And the second seems to refer to revoking the GPL for an already released version, which they would of course not be allowed to do.
This would make sense as ownership of the copyright would supersede a license.
“releasing the modified version to the public” would cover them re-closing the source and then subsequently releasing that newly closed source, so they can’t relicense it and then release the built version of the code.
At least not easily, this is where court history would likely need to be visited because the way it’s worded the interpretability of “modified” in this context would need to be examined.
Not a lawyer but in the scenario where proton closed the source but kept offering the build, even if gpl3 still applies since they’re the only copyright holder (no contributions) it’d only give them grounds to sue themselves?
From gnu.org:
Oh, yes but the DRM exemption clause means that you can backwards engineer the changes and continue releasing them under GPL
Edit: as an example we should probably be looking at the duckststion situation evolving right now:
https://vimuser.org/duckstation.html
IANAL, but AFAIK that’s incorrect. If you’re the only copyright holder, you can issue multiple licenses for your work. GPL doesn’t allow you to rescind previous issues, so anyone in possession of your GPL code can still modify and release it under the GPL freely. But it doesn’t prevent you from issuing your own work under a different license.
There isn’t usually much economic sense for most applications to do that because anyone can fork the project and distribute it for free. For Proton, since they still hold the server as closed source, they could simply introduce a breaking protocol change and all the forks would be useless.
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Any GPL violations would be reported to the Software Freedom Conservacy, who would go to court on the dev’s behalf.
There was a major lawsuit back in 2022 between the SFC and Vizio, and the SFC won.
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It’s pretty much not reversible and the code is free to use, modify, and distribute forever. And if you do modify it you also must make those changes open source.
Very good news
gpl v3 you can do pretty much anything but you have to put it the same license but it has like drm protections and Anti-Tivoization and also has some patent protections people find this license too strict
Its actually more restrictive, in a good way.
You can’t, for example, fork it, make changes, and sell that derivative software without releasing the source code
yeah but drm is too strict for some people and anti tivozation this is why linux did not do gpl 3.0 or later
Why the but? GPL 3 is the correct license to use for open source projects to ensure they stay open and corps don’t freeload on them.
English isn’t my first language. I share your opinion regarding the license. Which connector would you use instead of “but” to indicate that you succeeded in your efforts even though it was harder you thought it would be?
English is my only language, and yours looks fine to me. I thought it was pretty clear from the first comment that the “but” indicated success despite difficulties, and as you clarified that’s exactly what you meant.
Why not having a L2 maybe a L3? People from the US should feel like they’re missing out in our modern world!
Looks like you’ve got the upvotes backing you. I’ll keep on using as is. Thank you!
Ah gotcha, you could just omit but in this case and the sentence would have the intended meaning.
“and”
If you study non violent communication, folks will say to avoid using “I agree with you, but”. Because as soon as you say " but ", people get defensive and stop listening to you.
Whenever possible, replace “but” with “and” if the sentence still has the same meaning
This was not a case of “I agree with you, but…”, though. “But” is perfectly appropriate here to contrast between the first statement and the second.
@delirious_owl @acockworkorange
“I agree with you BUT you are being an a–hole.”
“I agree with you AND you are being an a–hole.”
Hmm. 🤔
Yeah. It also makes it sound way more impactful and true. Thank you! 😁
AGPL would have been a bit better, especially for the server side
This does not apply to the server. Only the client app is open source. The server is proprietary.
agreed