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Nix Hackers

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For people hacking on the Nix package manager itself191 Servers

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26 Sep 2025
@shine:proqqul.netTaeer Bar-Yam is there a reason that in value.hh, we pass ptrSize around as a template variable, rather than using sizeof(void *) at the point of use, or defining static constexpr detail::ptrSize = sizeof(void *)? Do we ever want to instantiate things at multiple ptrSizes during the same compilation? 13:10:28
@shine:proqqul.netTaeer Bar-YamNever mind. I see there's some games being played to get it to specialize correctly for 32 and 64 bit systems.13:37:37
@Ericson2314:matrix.orgJohn Ericsonwho was going to work on the "deprecated features" thing?16:21:46
@Ericson2314:matrix.orgJohn Ericson* who was going to work on the "deprecated features" / "warnings" thing?16:21:52
@Ericson2314:matrix.orgJohn EricsonI want to disable absolute paths haha16:22:06
@Ericson2314:matrix.orgJohn Ericson* I want to disable absolute paths in the language, haha16:22:21
@Ericson2314:matrix.orgJohn Ericson Taeer Bar-Yam: I am curious whether you can remove std::string earlier in your ExprString PR commit history? 16:55:13
@Ericson2314:matrix.orgJohn Ericson what is just stopping us from having the Value own it, and a std::string_view pointing within the value to avoid downcasting? 16:55:42
@Ericson2314:matrix.orgJohn Ericson (perhaps this is something that Sergei Zimmerman (xokdvium) already talked to you about, in which case my bad) 16:55:57
@Ericson2314:matrix.orgJohn Ericsonis the issue that the value might be garbage collected too earlier / root set problems?16:56:33
@shine:proqqul.netTaeer Bar-YamYes. It will immediately get garbage collected16:56:59
@Ericson2314:matrix.orgJohn EricsonOK16:57:23
@shine:proqqul.netTaeer Bar-Yamprobably I could rearrange the commits. I wasn't sure how much effort to put into cleaning up the commit history because i wasn't sure if I should squash them all before merging anyways16:57:47
@xokdvium:matrix.orgSergei Zimmerman (xokdvium)
In reply to @shine:proqqul.net
probably I could rearrange the commits. I wasn't sure how much effort to put into cleaning up the commit history because i wasn't sure if I should squash them all before merging anyways
In case the in-between commits are broken then there isn’t much point to keeping those separate. Also the diff is small enough
16:58:45
@Ericson2314:matrix.orgJohn EricsonI don't know how much things can/should be squashed, I'll leave that to sergei :), but yeah anything that will be squashed away of course don't worry about the history16:59:06
@shine:proqqul.netTaeer Bar-Yam(i'm aware the tests are failing btw. looking into it)17:08:46
@joerg:thalheim.ioMic92 Taeer Bar-Yam: btw. don't mind too much, but in general you can avoid "formatting" commands, by using git-absorb: https://github.com/tummychow/git-absorb 18:25:51
@joerg:thalheim.ioMic92 * Taeer Bar-Yam: btw. don't mind too much, but in general you can avoid "formatting" commits, by using git-absorb: https://github.com/tummychow/git-absorb 18:25:59
@shine:proqqul.netTaeer Bar-YamAh, thanks for the tip! I'll try to look into it soon. Though I'm kind of wary of stuff that is automagical with my git history 😅20:09:03
@magic_rb:matrix.redalder.orgmagic_rbIt says it will only create fixup commits by default so you can review them20:10:29
@shine:proqqul.netTaeer Bar-Yamoh i see. that's much better20:10:55
27 Sep 2025
@meltymeli:catgirl.cloud@meltymeli:catgirl.cloud joined the room.10:59:50
@meltymeli:catgirl.cloud@meltymeli:catgirl.cloudHi. I'm on Void Linux. I really like how Nix handles configuration, but am worried I have to hop to get the full experience. Is this the case?11:01:25
@k900:0upti.meK900 The full experience being full system config, yes 11:04:53
@k900:0upti.meK900 Also wrong room kinda 11:04:57
@k900:0upti.meK900 You probably want #users:nixos.org 11:05:05
@meltymeli:catgirl.cloud@meltymeli:catgirl.cloudThank you. Yes meaning I have to hop?11:06:22
@k900:0upti.meK900Yes meaning you have to run NixOS11:06:41
@volth:matrix.orgvolth joined the room.18:40:20
@Ericson2314:matrix.orgJohn Ericsonhttps://github.com/NixOS/nix/pull/14063 is ready for review19:13:31

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