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Lix

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Lix user channel. Feel free to discuss on-topic issues here and give each other help. For matrix.to links to the rest of the Lix channels, see: https://wiki.lix.systems/books/lix-organisation/page/matrix-rooms319 Servers

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13 Apr 2026
@blokyk:matrix.orgzoë (she/her) you know what they say: the best way to learn something is to be wrong about it on the internet :) 22:08:43
@charles:computer.surgeryCharles maybe also check __toString 22:10:43
@charles:computer.surgeryCharleshttps://docs.lix.systems/manual/lix/stable/language/builtins.html#builtins-import22:11:37
@charles:computer.surgeryCharles import checks that too for example 22:11:47
@blokyk:matrix.orgzoë (she/her)hmm that makes sense22:12:08
@charles:computer.surgeryCharles __toString takes precedence over outPath for builtins.toString so probably you'd want to copy that 22:12:31
@blokyk:matrix.orgzoë (she/her)i have to amend it anyway cause i forget to nixfmt it, as always22:12:31
@blokyk:matrix.orgzoë (she/her)oh god this language22:12:55
14 Apr 2026
@rootile:flausch.socialRutile joined the room.21:20:44
@commentator2.0:elia.gardenlegacy_rootile -> @rootile:flausch.social changed their display name from Rutile (rootile) to legacy_rootile -> @rootile:flausch.social.21:41:59
15 Apr 2026
@koaledu:pub.solarkoaleduI just showed Nix and to a CS professor at uni and I was able to convinced him to use Lix as our dev environment.03:29:39
@liyua:liyua.moeLiyua
In reply to @koaledu:pub.solar
I just showed Nix and to a CS professor at uni and I was able to convinced him to use Lix as our dev environment.
Holy based
17:07:50
@unhooked-spirits:matrix.orgUnhooked Spirits

How would I go about checking if the build sandbox is working?

Context: I'm running Lix (2.94 currently) inside a container (Docker). I noticed that I had sandbox=false, so I flipped it to true, but everything still seems to work… which is concerning to me.

18:30:21
@raitobezarius:matrix.orgraitobezarius nix-build -E '(import <nixpkgs> { }).runCommand "cat /etc/passwd"' 18:31:09
@raitobezarius:matrix.orgraitobezariusdo you see your docker users?18:31:16
@raitobezarius:matrix.orgraitobezariusyou are unsandboxed18:31:17
@rkjnsn:matrix.orgrkjnsn joined the room.19:58:57
@rkjnsn:matrix.orgrkjnsn

Is this the right place for support? I'm receiving the following error when trying to upgrade to Lix:

+ exec /var/root/.nix-profile/bin/nix run --extra-experimental-features 'nix-command flakes' --extra-substituters https://cache.lix.systems --extra-trusted-public-keys cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o= 'git+https://git.lix.systems/lix-project/lix?ref=refs/tags/2.95.1' --extra-experimental-features 'nix-command flakes' upgrade-nix --extra-substituters https://cache.lix.systems --extra-trusted-public-keys cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o=
warning: selector '/nix/store/dyv2ybpivdhli513xwhirvds7vp7mrw1-nix-2.34pre20251217_b6add8dc+1/bin/nix-env' matched no installed derivations
installing 'lix-2.95.1'
building '/nix/store/4sr7s6kmfxb6796nr37yqdby4lqa7fwd-user-environment.drv'...
error: Unable to build profile. There is a conflict for the following files:

         /nix/store/xz6phkbmacw53cvsmkkqj83y59hqbqc9-nix-2.34pre20251217_b6add8dc+1/bin/nix-prefetch-url
         /nix/store/ylbrql19ngr2wypjiviyx21qvbwpd79z-lix-2.95.1/bin/nix-prefetch-url
error: Cannot build '/nix/store/4sr7s6kmfxb6796nr37yqdby4lqa7fwd-user-environment.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/f79w747q5a628gk3wpm6ryrwgrbxsr0d-user-environment
       Last 4 log lines:
       > error: Unable to build profile. There is a conflict for the following files:
       >
       >          /nix/store/xz6phkbmacw53cvsmkkqj83y59hqbqc9-nix-2.34pre20251217_b6add8dc+1/bin/nix-prefetch-url
       >          /nix/store/ylbrql19ngr2wypjiviyx21qvbwpd79z-lix-2.95.1/bin/nix-prefetch-url
       For full logs, run:
         nix-store -l /nix/store/4sr7s6kmfxb6796nr37yqdby4lqa7fwd-user-environment.drv
error: program '/nix/store/ylbrql19ngr2wypjiviyx21qvbwpd79z-lix-2.95.1/bin/nix-env' failed with exit code 1
20:01:20
@rkjnsn:matrix.orgrkjnsn *

Is this the right place for support? I'm receiving the following error when trying to upgrade to Lix:

# curl -sSf -L "https://git.lix.systems/lix-project/lix/raw/tag/2.95.1/misc/upgrade-lix.sh" | bash -s -- 2.95.1
+ exec /var/root/.nix-profile/bin/nix run --extra-experimental-features 'nix-command flakes' --extra-substituters https://cache.lix.systems --extra-trusted-public-keys cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o= 'git+https://git.lix.systems/lix-project/lix?ref=refs/tags/2.95.1' --extra-experimental-features 'nix-command flakes' upgrade-nix --extra-substituters https://cache.lix.systems --extra-trusted-public-keys cache.lix.systems:aBnZUw8zA7H35Cz2RyKFVs3H4PlGTLawyY5KRbvJR8o=
warning: selector '/nix/store/dyv2ybpivdhli513xwhirvds7vp7mrw1-nix-2.34pre20251217_b6add8dc+1/bin/nix-env' matched no installed derivations
installing 'lix-2.95.1'
building '/nix/store/4sr7s6kmfxb6796nr37yqdby4lqa7fwd-user-environment.drv'...
error: Unable to build profile. There is a conflict for the following files:

         /nix/store/xz6phkbmacw53cvsmkkqj83y59hqbqc9-nix-2.34pre20251217_b6add8dc+1/bin/nix-prefetch-url
         /nix/store/ylbrql19ngr2wypjiviyx21qvbwpd79z-lix-2.95.1/bin/nix-prefetch-url
error: Cannot build '/nix/store/4sr7s6kmfxb6796nr37yqdby4lqa7fwd-user-environment.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/f79w747q5a628gk3wpm6ryrwgrbxsr0d-user-environment
       Last 4 log lines:
       > error: Unable to build profile. There is a conflict for the following files:
       >
       >          /nix/store/xz6phkbmacw53cvsmkkqj83y59hqbqc9-nix-2.34pre20251217_b6add8dc+1/bin/nix-prefetch-url
       >          /nix/store/ylbrql19ngr2wypjiviyx21qvbwpd79z-lix-2.95.1/bin/nix-prefetch-url
       For full logs, run:
         nix-store -l /nix/store/4sr7s6kmfxb6796nr37yqdby4lqa7fwd-user-environment.drv
error: program '/nix/store/ylbrql19ngr2wypjiviyx21qvbwpd79z-lix-2.95.1/bin/nix-env' failed with exit code 1
20:01:52
@rkjnsn:matrix.orgrkjnsn Looks like I got it. I ran nix-env --uninstall nix followed by /nix/store/dyv2ybpivdhli513xwhirvds7vp7mrw1-nix-2.34pre20251217_b6add8dc+1/bin/nix-env --install lix, and then finally reran "https://git.lix.systems/lix-project/lix/raw/tag/2.95.1/misc/upgrade-lix.sh" | bash -s -- 2.95.1 to get the latest stable version. 20:25:46
@rkjnsn:matrix.orgrkjnsnI also had to reboot afterward in order to get building derivations to work again. (Presumably restarting the build server would have been sufficient.) Either way, it wasn't in the instructions, but maybe it's supposed to be handled automatically when switching from CppNix to Lix and my workaround skipped that step.21:13:14
@webtier:unredacted.orgwebtierAnyone running into freezing issues with firefox lately?22:49:57
@webtier:unredacted.orgwebtier * 22:50:04
@webtier:unredacted.orgwebtier * 22:50:09
@hexa:lossy.networkhexano22:50:35
@hexa:lossy.networkhexadas ist crash? and if so, do you get the crash reporter?22:51:03
@hexa:lossy.networkhexaRedacted or Malformed Event22:51:06
@hexa:lossy.networkhexaRedacted or Malformed Event22:51:08
@webtier:unredacted.orgwebtieris this more for nixos channels? MOZ_ENABLED_WAYLAND=0 fixes it for example discord login is a culprit, i get crash reports and something to do with sway and wayland, but dont want to dump reports now here, was just checking sentiment23:10:17
@hexa:lossy.networkhexaare you opening firefox by clicking a link in discord?23:12:54

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