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Lix Development

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(Technical) development of Lix, the package manager, a Nix implementation. Please be mindful of ongoing technical conversations in this channel.140 Servers

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12 Feb 2026
@hexa:lossy.networkhexa* looks like the backend service is not responding18:59:09
@hexa:lossy.networkhexa cc @delroth 18:59:29
@hexa:lossy.networkhexalooks like it sits on some iowait19:00:18
@raitobezarius:matrix.orgraitobezariuslooking19:00:25
@raitobezarius:matrix.orgraitobezariusthis is something i want to debug19:00:51
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13 Feb 2026
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19 Feb 2026
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20 Feb 2026
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21 Feb 2026
@vczf:matrix.orgvczf

I got my repl doc/edit pipe issue figured out kinda with a lot of trial and error, though I don’t really understand why it works

I am really struggling with basic discoverability in the codebase.

Anybody have advice on what to use for debugging? I used gdb a bit and was able to set a breakpoint in repl.cc, but couldn’t get much info out of the Value, or call the methods on it

Also has anybody written any high level explainer on nix/lix internals?

09:28:39
@piegames:flausch.socialpiegamesWhat issue are you working on?11:28:25
@piegames:flausch.socialpiegamesI think there is some high-level explainer of the codebase on wiki.lix.systems, but unsure if it will cover what you want here11:29:08
@raitobezarius:matrix.orgraitobezarius
In reply to @vczf:matrix.org

I got my repl doc/edit pipe issue figured out kinda with a lot of trial and error, though I don’t really understand why it works

I am really struggling with basic discoverability in the codebase.

Anybody have advice on what to use for debugging? I used gdb a bit and was able to set a breakpoint in repl.cc, but couldn’t get much info out of the Value, or call the methods on it

Also has anybody written any high level explainer on nix/lix internals?

Normally, there's an automatic gdb script for Value, did it get loaded?
11:54:11
@piegames:flausch.socialpiegamesLast time I did some debugging with horrors it required manually loading / adding to an init file, and then it somehow didn't work with my setup somehow11:55:51
@raitobezarius:matrix.orgraitobezariusThere's a safeness mechanism that prevent auto loading11:57:22
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@vczf:matrix.orgvczf

I have been looking into why documentation doesn’t show up for lib.trivial.pipe in the repl (or other partially applied primops like bitNot)

Eldritch horrors actually reviewed my code and I have a bit more to go on

18:32:34
@vczf:matrix.orgvczf I was able to get some info out of value after adding the suggested line to my gdbinit 18:33:34
@vczf:matrix.orgvczfI’m not experienced with c++, so I might just be expecting too much from gdb vs java/dart as far as debugging goes18:35:35
@piegames:flausch.socialpiegamesSome people swear on gdb, but for me it's a downgrade from IntelliJ Java land18:36:20

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