Code change:
All expressions in nixpkgs are supposed to be MIT licensed, but is licensed under GPL-3.0. as an externally developed project under different licensing terms that we use for nixpkgs. It was merged into nixpgks in without the license being changed to MIT or a compatible license. Every package using is using improperly licensed expressions, which at the time of writing looks to be a bit more than 25 packages. I have two proposed solutions, neither of which are particularly appealing: -license under MIT This would require assembling relicensing signatures from all existing yarn2nix authors which include both contributors when it was in nix-community & in nixpkgs. It's gonna take some time and keep us in license non-compliance in the mean time. , migrate packages to something else The newly looks like a good contender as pointed out by in chat. CCing authors and other relevant parties Add a :+1: [reaction] to [issues you find important]. [reaction]: [issues you find important]:
Just to repeat what I said on Matrix, if we can’t figure out something better in a few days I will open a relicensing issue and start the work of pinging all the contributors. Reimplementing it sounds nice, but I suspect it would take quite a while given the speed at which Nixpkgs language ecosystems tend to move.
yarn2nix can be easily misused and trigger IFD. I think too that in the long run we should replace it. Maybe yarnBuildHook/yarnConfigHook from are already enough and the package can easily be migrated?
(Nixpkgs potentially actually being GPLv3 is very much a bug IMO.) Migration is all well and good, but we probably ought to try to relicense anyway: we can’t change old revisions of Nixpkgs and it’s not good for multiple years of Nixpkgs history to be under unclear licensing conditions.
I guess re-licensing is the better way for now? We can ping all the contributors, from a glance I read most of the names before.
Yes, I think we should probably at least try. I will open a new GitHub issue for it today so that we can discuss here without it getting bogged down in rote responses.
Okay, here we go I guess:
Oof, thank you for trying to clean up that mess. I just got the notification from the tracking issue and I feel that a big portion of any blame should go towards my direction because of the introduction in , rather than While I (try to) put a lot more thought into licenses today, it didn't cross my mind back then that vendoring with the included license could have such implications.
No worries – thanks for trying to improve the Node packaging situation in Nixpkgs and for your quick reply to the ping! This is an institutional failure IMO, and I think that it would have been caught before merge these days.
seems still active. It might be worth posting the same as on Discourse if you want people's replies to be public (unlike with email).

Related discussion:
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