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25.11 "Xantusia" | https://nixos.github.io/release-wiki/Home.html89 Servers

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1 Dec 2025
@lennart:0520.chlennartcongrats to 25.11, good job 🎉01:30:28
@lennart:0520.chlennart Sigmanificient: that's a real cute logo :) 01:35:15
@vcunat:matrix.orgvcunathttps://discourse.nixos.org/t/github-labels-for-upgrade-dealbreaker-regressions/7280012:19:25
@nrbray:matrix.orgNigel joined the room.20:22:43
2 Dec 2025
@phelix:c-base.orgphelix | 3383 changed their display name from phelix to phelix | 3383.19:07:23
5 Dec 2025
@lennart:0520.chlennart

hi you all, I'd like to propose to go back to a schedule where NixOS is released in September xx.09 and
March xx.03. I do not know the reasons for that change back then in 2020.

with November xx.11 and and May xx.05 we effectivley remove one 1 week of the 4 weeks a previous NixOS release is supported. I guess for most there is enough stress at the end of the year already.

I am noticing the effects right now at work, where I need to upgrade several machines to 25.11. due to Christmas and Chaos Communication Congress I have to rush that, if do not want to on holidays.

since a big part of the NixOS community is Western civilised and probably at least visiting family at Christmas even if not celebrating, I think we can measure this in.

where do you think can I propose this more prominently? Discourse? I know this would be a big change…

02:59:52
@lennart:0520.chlennart *

hi you all, I'd like to propose to go back to a schedule where NixOS is released in September xx.09 and March xx.03. I do not know the reasons for that change back then in 2020.

with November xx.11 and and May xx.05 we effectivley remove one 1 week of the 4 weeks a previous NixOS release is supported. I guess for most there is enough stress at the end of the year already.

I am noticing the effects right now at work, where I need to upgrade several machines to 25.11. due to Christmas and Chaos Communication Congress I have to rush that, if do not want to on holidays.

since a big part of the NixOS community is Western civilised and probably at least visiting family at Christmas even if not celebrating, I think we can measure this in.

where do you think can I propose this more prominently? Discourse? I know this would be a big change…

03:00:01
@lennart:0520.chlennart *

hi you all, I'd like to propose to go back to a schedule where NixOS is released in September xx.09 and March xx.03. I do not know the reasons for that change back then in 2020.

with November xx.11 and and May xx.05 we effectivley remove one 1 week of the 4 weeks a previous NixOS release is supported. I guess for most there is enough stress at the end of the year already.

I am noticing the effects right now at work, where I need to upgrade several machines to 25.11. due to Christmas and Chaos Communication Congress I have to rush that, if do not want to work on holidays.

since a big part of the NixOS community is Western civilised and probably at least visiting family at Christmas even if not celebrating, I think we can measure this in.

where do you think can I propose this more prominently? Discourse? I know this would be a big change…

03:01:31
@lennart:0520.chlennartOK I guess this is RFC worthy? I could start one. https://github.com/NixOS/rfcs/?tab=readme-ov-file#when-this-process-is-followed03:09:42
@lennart:0520.chlennartI'm going to email the nixpkgs core team about that later today. :)05:31:17
@ma27:nicht-so.sexyma27

fwiw the original motivation is documented here: https://github.com/NixOS/rfcs/blob/master/rfcs/0080-nixos-release-schedule.md#motivation

(I didn't check if it still applies, but figured it might help with your considerations)

06:06:00
@lennart:0520.chlennart does help, thanks ma27. since NixOS is mainly used on servers, I'd argue WMs are negligible… lets see. 06:56:19
@lennart:0520.chlennart

The current March and September release months may be the worst months for GNOME and Plasma
https://github.com/NixOS/rfcs/blob/master/rfcs/0080-nixos-release-schedule.md?plain=1#L32

KDE Plasma releases roughly three major feature releases a year
https://endoflife.date/kde-plasma

yea, well…

06:57:42
@vcunat:matrix.orgvcunatIf you need extra one week, it would seem way simpler to just promise one extra week or two.07:00:02
@lennart:0520.chlennartuuuh nice idea07:00:11
@lennart:0520.chlennart* uuuh nice idea, didn't think of that07:00:18
@vcunat:matrix.orgvcunatBut I wouldn't do such changes lightly anyway.07:01:42
@robert:funklause.dedotlambdaYou mean releasing earlier in the month?07:05:33
@vcunat:matrix.orgvcunatThat might also be possible, but I meant moving the end of support, not the beginning.07:06:47
@vcunat:matrix.orgvcunat

I didn't check if it still applies, but figured it might help with your considerations

This timing will hold generally, as both Fedora and Ubuntu are doing 04 + 10.

07:07:24
@leona:leona.isleonaI’m not here to represent them, but i can say that e.g. my workplace already struggles with 4 weeks upgrade time (but also partly for home-made reasons). Reducing it further doesn’t help07:08:38
@robert:funklause.dedotlambdaReleasing in early November would also give people more time to upgrade by the end of December07:09:42
@vcunat:matrix.orgvcunatWe're surely all talking about increasing the overlap, not reducing.07:10:04
@leona:leona.isleonaAh, wasn’t sure about that, but then I agree07:10:49
@leona:leona.isleonaI wasn’t sure if the proposal is “give maintainers more time, reduce overlap support period” or “release earlier -> lengthen the support period”07:12:35
@vcunat:matrix.orgvcunat Down-sides of increasing overlap are there, too. For example, staging >>> master lag gets like doubled in that period. 07:14:08
@leona:leona.isleonaI personally think we should wait for a faster hydra, then the problems won’t matter this much07:15:22
@lennart:0520.chlennartI'd propose I sent an email to nixpkgs core team summarising all your and mine input, and we'll figure out how to move forward with them? DM me your mail address if you want to be CC'ed. gonna write that mail next week. OK?07:19:49
@lennart:0520.chlennart* I'd propose I send an email to nixpkgs core team summarising all your and mine input, and we'll figure out how to move forward with them? DM me your mail address if you want to be CC'ed. gonna write that mail next week. OK?07:20:59
@vcunat:matrix.orgvcunatWhy not in public, e.g. discours?07:24:46

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