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Nix Package Manager development

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For people hacking on Nix: https://github.com/NixOS/nix Nix maintainers can be reached here.182 Servers

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16 Oct 2025
@Ericson2314:matrix.orgJohn EricsonI made the hash serializer a second commit for a future Pr19:31:20
@Ericson2314:matrix.orgJohn Ericsonthis one just does the derivation serializer19:31:27
@Ericson2314:matrix.orgJohn Ericsonbut it still has multiple .yaml files19:31:34
@Ericson2314:matrix.orgJohn Ericsonand so we make sure that the cross-file references work19:31:52
@Ericson2314:matrix.orgJohn Ericson (I made a WIP hash one just to factor out hashAlgo from the current DRV json format there) 19:32:14
@Ericson2314:matrix.orgJohn Ericson Eelco: https://github.com/NixOS/nix/pull/14272 this ones make me smile, because that serializer stuff was one of the first refactors I did, and now I think you are on the cusp for finding the "killer app" for it :) 19:37:39
@raboof:matrix.orgraboof Hmm, I'm noticing since a ~recent nixpkgs update, OUT_PATHS doesn't seem to be passed to the post-build hook anymore. I haven't done a proper bisect yet, I did browse the code/issues/PRs a bit but didn't see anything that jumped out at me. 20:53:44
@fzakaria:one.ems.hostfzakariaas a follow up to https://github.com/NixOS/nix/pull/14273 maybe someone wants to pair on working on RemoteFSAccessor It also stores the NAR fully in memory as a std::string Would be cool to remove the std::string constructor from NARAccessor completely.22:13:28
@fzakaria:one.ems.hostfzakariaif you write an issue i can look into it22:16:53
17 Oct 2025
@fzakaria:one.ems.hostfzakariaCan we make local-nar-cache have a default ?00:12:17
@fzakaria:one.ems.hostfzakaria

supported for BinaryStore

https://cache.nixos.org/?local-nar-cache=...

00:12:30
@fzakaria:one.ems.hostfzakariait's the reason why it reads the NAR all in memory00:15:14

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