| 26 May 2021 |
 maralorn | https://nixos.wiki/wiki/Nix_channels
For a channel update to succeed, two conditions need to be satisfied:
- Particular jobset evaluation needs to be completely built ie. no more queued jobs, even if some jobs may fail
- Particular jobset evaluation's tested/unstable job needs to be built succesfully
The jobset for nixos-unstable is nixos:trunk-combined which includes haskellPackages.
The tested job for nixos:trunk-combined does not include haskellPackages. But that matters only for successful builds.
| 13:57:17 |
| maralorn | In reply to @sternenseemann:systemli.org
hypothetically as long as cachix is built, nixpkgs-unstable could advance without all of haskellPackages being built No | 13:57:33 |
 sterni (he/him) | hmm, okay then you are right | 13:57:57 |
| sterni (he/him) | nice that the wiki documents this I skimmed through a perl script in nix-channel-scripts earlier, but most have overlooked that check | 13:58:25 |
| maralorn | Sorry for being so insistent on this. But I think having that fact straight is helpful.^^ | 13:59:10 |
| sterni (he/him) | but what are you trying to argue for? this means that nixpkgs-unstable blocks on all of haskellPackages being rebuilt, so this makes my argument even stronger | 13:59:19 |
| sterni (he/him) | remember, rebuilds that would involve rebuilding all of haskellPackages don't happen on master, they go via staging | 13:59:37 |
| maralorn | I am not arguing for anything. I agree with your conclusion. I just wanted that we agree on the facts. | 13:59:54 |
| sterni (he/him) | oh all right | 14:00:01 |
| maralorn | Is there a somehow predictable schedule to the staging-next merges? maybe we can try to avoid them? | 14:07:55 |
| sterni (he/him) | The nixpkgs manual says on staging-next
Stabilize it for a few days and then merge into master.
| 14:13:15 |
| sterni (he/him) | so it is merged when it's deemed stable enough roughly | 14:13:27 |
| sterni (he/him) | I guess it takes ~ a week or so usually? | 14:13:54 |
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| 27 May 2021 |
 cdepillabout | I read through the conversation above, and it sounds like there is consensus that we merge master into haskell-updates, wait for Hydra to rebuild everything, and then mergehaskell-updates into master. | 00:55:59 |
| cdepillabout | Depending on how fast the rebuilds go, I might have to pass on the open haskell-updates to sterni (he/him) if the rebuilds don't finish in a day or two. | 00:57:00 |
| sterni (he/him) | that's no problem | 00:57:20 |
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| 28 May 2021 |
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| cdepillabout | sterni (he/him): I'm going to pass the torch to you for the open haskell-updates PR. Hydra is being pretty slow with the darwin rebuilds. | 08:58:58 |
| maralorn | Do we need to care about darwin rebuilds? A few weeks ago we didn‘t even have a job for it. And nixos-unstable does not wait for darwin. | 09:00:14 |
