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Nix Hackers

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For people hacking on the Nix package manager itself208 Servers

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25 Jun 2026
@joerg:thalheim.ioMic92check the pr of domen19:38:37
@xokdvium:matrix.orgSergei Zimmerman (xokdvium) IIUC https://github.com/NixOS/patchelf/pull/647 isn't going to address the core issue with slow startups and -z now / RELRO 19:48:30
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)I.e. the DT_NEEDED resolution is going to result in less stat storms (which is good), but resolving dynamic relocations isn't going to be any faster19:48:58
@connorbaker:matrix.orgconnor (burnt/out) (UTC-8) llakala do you happen to have a utility or script (or maybe there’s something already in tree that I’m missing) that lets you produce the diff in stats (like in https://github.com/NixOS/nix/pull/15885)? 19:53:56
@llakala:matrix.orgllakalayep! i put it up in a flake of mine20:15:07
@llakala:matrix.orgllakala currently undocumented but you can see the source here 20:16:16
@llakala:matrix.orgllakala if you really want to just run it, you can feel free to copy the jq script yourself and run it with jq -s -f script.jq before.json after.json (where stats are generated with NIX_SHOW_STATS) 20:17:25
@llakala:matrix.orgllakala script is meant to make that easy so you can do nix run github:llakala/menu#dims -- --before HEAD~1 --expr '2+2', but the script UX kinda sucks - it requires committing your changes before testing, and will rerun the expr even if the before commit is the same as a previous run. something to improve in the future 20:19:46
@llakala:matrix.orgllakala i'd be happy to upstream any of this wherever it's wanted, for the record. stats diffing is a wonderful convenience, and memoryBytes.total is very useful 20:26:03
19 May 2021
@eelco:nixos.org@eelco:nixos.org changed the history visibility to "world_readable" from "shared".15:40:14
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