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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.138 Servers

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3 Dec 2025
@522_:catgirl.cloud522 it/its ⛯ΘΔ(but do they run it? unsure.)18:44:54
@522_:catgirl.cloud522 it/its ⛯ΘΔim running into timeouts, lol18:45:46
@522_:catgirl.cloud522 it/its ⛯ΘΔ
ALARM: working on the last Unit for 7 seconds
       and the timeout value is 5 (use -timeout=N to change)
MS: 4 ChangeByte-ShuffleBytes-CrossOver-CopyPart-; base unit: ec4cda4d91344407b0e0c4c8f068b4f60532cbed
0x23,0x4c,0x1,0x5b,0xa,0x23,0xa,
#L\001[\012#\012
artifact_prefix='./'; Test unit written to ./timeout-133e6ac795d4022c770ef5c80082622f983ece7e
Base64: I0wBWwojCg==

thanks, very cool

18:46:17
@522_:catgirl.cloud522 it/its ⛯ΘΔanyways this library seems so broken with timeouts that i can't find any interesting bugs. i would not use it.18:50:39
@522_:catgirl.cloud522 it/its ⛯ΘΔ
AddressSanitizer:DEADLYSIGNAL
=================================================================
==4186307==ERROR: AddressSanitizer: stack-overflow on address 0x7ffd4de08ff8 (pc 0x5573ef08d9d5 bp 0x7ffd4de09020 sp 0x7ffd4de09000 T0)
[...]
SUMMARY: AddressSanitizer: stack-overflow (/tmp/empty_2025-12-03_18-42_YO56/toml11/.clusterfuzzlite/parse_fuzzer+0xe49d5) 
==4186307==ABORTING
MS: 4 CopyPart-ChangeBit-PersAutoDict-ChangeBit- DE: "\001t]\027E\321t]"-; base unit: cedc8e17bb302340fa730e2daef1bf85c97f1c23
0x48,0xa,0xa,0x3d,0x2d,0x73,0x31,0x5b,0x2d,0x65,0x6d,0x20,0x20,0x60,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0xa,0x44,0xa,0x4e,0x3d,0x5b,0xa,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x20,0x5b,0xa,0x20,0x30,0x20,0x20,0x20,0x20,0x20,0x5b,0x5b,0x5b,0x20,0x3d,0x2d,0x73,0x31,0x20,0x74,0x5d,0x20,0x45,0x51,0x74,0x5d,
H\012\012=-s1[-em  `         \012D\012N=[\012         [\012 0     [[[ =-s1 t] EQt]
artifact_prefix='./'; Test unit written to ./crash-57c309cacf0b22cae06e40cb1e4a75759b0ec285
Base64: SAoKPS1zMVstZW0gIGAgICAgICAgICAKRApOPVsKICAgICAgICAgWwogMCAgICAgW1tbID0tczEgdF0gRVF0XQ==

loud cheering
we got a "not timeout"

18:53:33
@522_:catgirl.cloud522 it/its ⛯ΘΔnot actually memory unsafety, just a stack overflow, but still. lol lmao.18:53:54
@raitobezarius:matrix.orgraitobezariusthis seems crazy19:30:35
@522_:catgirl.cloud522 it/its ⛯ΘΔdoes lix have a hard dep on rust? just use the toml crate and make C bindings to it :-)19:45:26
@aloisw:julia0815.dealoisw It does, but as far as I understand the problem with adding more Rust is that you can't have two dependencies on Rust, so that's not going to work. 19:47:45
@qyriad:katesiria.orgQyriad no we have the fix for that 19:52:45
@qyriad:katesiria.orgQyriad actually we have two 19:53:11
@qyriad:katesiria.orgQyriad the first is implemented and we just need to rebase it and write comments/README to explain it 19:53:44
@qyriad:katesiria.orgQyriad which is just linking all rust through a single crate 19:54:18
@qyriad:katesiria.orgQyriad the second is to just use rustc as our linker  19:54:35
@qyriad:katesiria.orgQyriad which we think is the cleaner solution and something we'll want to do anyway 19:54:56
@raitobezarius:matrix.orgraitobezariusi love the sound of every words20:15:11
16 May 2024
@aciceri:nixos.devzrsk joined the room.13:54:49
@samrose:matrix.orgsamrose
In reply to @lunaphied:lunaphied.me
I think there were a few CLs on the Gerrit but nothing being actively worked
The other thing that I could do if it helps is test things and try to find bugs. I did do some C++ work in the past, but may lack the time to do it justice here at least for about 30 days or so
15:55:29
@qyriad:katesiria.orgQyriadwe are not in any rush 🙂17:20:53
@samrose:matrix.orgsamroseWould it help to also test out the existing Lix code and try to find issues/bugs etc?17:23:21
@qyriad:katesiria.orgQyriadabsolutely17:23:41
@samrose:matrix.orgsamrose
  • how do people feel about the existing test suite that comes along with nix source code or Lix?
17:23:48
@qyriad:katesiria.orgQyriadit's pitiful17:24:10
@samrose:matrix.orgsamroseheh 17:24:16
@raitobezarius:matrix.orgraitobezariusexpanding it is cool17:24:23
@raitobezarius:matrix.orgraitobezariuswriting new tests for builtins which are not tested17:24:30
@raitobezarius:matrix.orgraitobezariusnew test behaviors, etc.17:24:32
@qyriad:katesiria.orgQyriad we have three flavors of test:
  1. gtest (offer only available in libexpr and libutil)

  2. bash script

  3. virtual machine


the vast, vast majority of testing is in the "bash script" flavor and it is a mess
17:25:01
@samrose:matrix.orgsamroseI was just going to ask on the "functional" tests: do we still like using bash there?17:25:56
@samrose:matrix.orgsamrosethe last time that I worked on a major nix related cli project that used bash, or bats for testing, over time it became rather kind of hard to maintain17:26:42

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