 | Nix Package Manager development | 835 Members |
| For people hacking on Nix: https://github.com/NixOS/nix Nix maintainers can be reached here. | 179 Servers |
| Nix Package Manager development | 835 Members |
| For people hacking on Nix: https://github.com/NixOS/nix Nix maintainers can be reached here. | 179 Servers |
| Sender | Message | Time |
|---|---|---|
| 13 Sep 2025 | ||
 puck | the nix language without e.g. derivation is ... kinda hard to use | 20:55:05 |
| puck | i once experimented by taking the nix source code and taking out everything that isn't the expression interpreter; very little was left. just a handful of primops; i didn't even have import because it depended on the FS | 20:55:40 |
| puck | comparing with e.g. https://nix-re.pl/ which translates everything to a primop call (a + b -> __add a b; a.b.c or d -> __selectOr a [ "b" "c" ] d) | 20:56:27 |
| puck | all this to say i don't think there's much of a subset of Nix that would let you reasonably test performance; the only real-world performance test i can think of is "how well can you evaluate nixpkgs"; which requires .. well, everything | 21:00:59 |
 magic_rb | right, okay, point taken, ig ill have to implement enough to eval nixpkgs to actually get any data | 21:10:14 |
| magic_rb | ... | 21:10:15 |
| magic_rb | well, im not even at a functional VM so uh, thats ways off, currently trying to wrap my head around the STG still | 21:10:36 |
| magic_rb | okay, i have no clue what im doing, anyone know the STG and can help me find the bug? or anyone up for a fun pairing? I'm pretty sure im folling the paper to the letter but its being weird, i suspect a miscompilation from Nix -> STG, cause the STG VM is behaving exactly as the paper says | 21:32:15 |
 jaen | Slowly working on installer rebase and need an opinion — I have some tests that are failing because it assumes existence of a default profile that has nix in it, cf:https://github.com/DeterminateSystems/nix-installer/blob/8a7bb095d93ada552d20d2f22ffd9f1668f8e394/src/profile/nixenv/tests.rs#L135-L136 https://github.com/DeterminateSystems/nix-installer/blob/8a7bb095d93ada552d20d2f22ffd9f1668f8e394/src/profile/nixenv/mod.rs#L98 It is not the case on my system, it links into per-user/root/profile which does not exist (the folder only has channels there. And I'm wondering if it's my NixOS setup that's wrong or is detsys assuming something that's not really true? | 21:59:15 |
| 14 Sep 2025 | ||
 Emma [it/its] joined the room. | 08:32:48 | |
 @azharmomin:kde.org joined the room. | 16:22:28 | |
| @azharmomin:kde.org left the room. | 16:37:42 | |
 @xworld21:matrix.org left the room. | 18:37:24 | |
| 15 Sep 2025 | ||
 Sergei Zimmerman (xokdvium) | Btw here's the manifistation of this fever dream of mine: https://github.com/NixOS/nix/pull/13987 | 00:16:54 |
| 16 Sep 2025 | ||
 getchoo | i think i have a decent solution here: https://github.com/getchoo-contrib/nix/tree/getchoo/dogfood-experimental-installer it currently grabs the artifacts the 0.27.0, but it wouldn't be too hard to extend to fetch from the main branch builds (if they actually uploaded their artifacts)dogfooding even works as well! ...but i did come across an interesting problem | 04:18:02 |
| getchoo | when dogfooding is an enabled with this experimental installer option, you'll end up with an 4: Failed to execute command HOME="/root" "/nix/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre/bin/nix-store" "--load-db"`` errori traced it back to this pretty naive snippet of code that basically just takes the first path in the store matching nix-* and runs it, with no checks for if /bin/nix-store actually exists https://github.com/NixOS/experimental-nix-installer/blob/20be610e1f29c8a127146da67ed56f879b173ac6/src/action/base/setup_default_profile.rs#L55-L70 | 04:19:47 |
| getchoo | this worked before the component split in 2.29 since there would only be one main nix store path at this point, but now it matches the nix-main store path first, which doesn't a bin dir or any of the nix binaries | 04:21:02 |
| getchoo | i figured this was something probably fixed in an update upstream and i'd need to wait on a rebase, but the code there actually remains entirely the same https://github.com/DeterminateSystems/nix-installer/blob/8a7bb095d93ada552d20d2f22ffd9f1668f8e394/src/action/base/setup_default_profile.rs#L56-L69 | 04:22:07 |
| getchoo | i think this might only work because the hash part of the release nix store path happens to be sorted before the other components, while it isn't in the pre-release tarball from the artifacts i'm pushing into this lol | 04:33:40 |
| getchoo | * when dogfooding is enabled with this experimental installer option, you'll end up with an 4: Failed to execute command HOME="/root" "/nix/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre/bin/nix-store" "--load-db"`` errori traced it back to this pretty naive snippet of code that basically just takes the first path in the store matching nix-* and runs it, with no checks for if /bin/nix-store actually exists https://github.com/NixOS/experimental-nix-installer/blob/20be610e1f29c8a127146da67ed56f879b173ac6/src/action/base/setup_default_profile.rs#L55-L70 | 04:33:57 |
| getchoo | * when dogfooding is enabled with this experimental installer option, you'll end up with an 4: Failed to execute command \HOME="/root" "/nix/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre/bin/nix-store" "--load-db"`error i traced it back to this pretty naive snippet of code that basically just takes the first path in the store matchingnix-*and runs it, with no checks for if/bin/nix-store` actually exists https://github.com/NixOS/experimental-nix-installer/blob/20be610e1f29c8a127146da67ed56f879b173ac6/src/action/base/setup_default_profile.rs#L55-L70 | 04:34:15 |
| getchoo | * when dogfooding is enabled with this experimental installer option, you'll end up with an 4: Failed to execute command \HOME="/root" "/nix/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre/bin/nix-store" "--load-db"` error i traced it back to this pretty naive snippet of code that basically just takes the first path in the store matchingnix-*and runs it, with no checks for if/bin/nix-store` actually exists https://github.com/NixOS/experimental-nix-installer/blob/20be610e1f29c8a127146da67ed56f879b173ac6/src/action/base/setup_default_profile.rs#L55-L70 | 04:34:31 |
| getchoo | * when dogfooding is enabled with this experimental installer option, you'll end up with an 4: Failed to execute command \HOME="/root" "/nix/store/dkmylx2wyz9i6ycbmr07lpv15mph0d7y-nix-main-2.32.0pre/bin/nix-store" "--load-db"`` error i traced it back to this pretty naive snippet of code that basically just takes the first path in the store matchingnix-\*and runs it, with no checks for if/bin/nix-store\ actually exists https://github.com/NixOS/experimental-nix-installer/blob/20be610e1f29c8a127146da67ed56f879b173ac6/src/action/base/setup_default_profile.rs#L55-L70 | 04:34:42 |
| getchoo | * when dogfooding is enabled with this experimental installer option, you'll end up with an error like this i traced it back to this pretty naive snippet of code that basically just takes the first path in the store matching | 04:35:11 |
| getchoo | does seem to be the case after re-rolling the hash on a new revision. reported it https://github.com/NixOS/experimental-nix-installer/issues/47 and opened up a draft of everything in https://github.com/NixOS/nix/pull/14002. i'm pretty sure it's in a good state, minus this bug? | 06:13:53 |
| getchoo | * does seem to be the case after re-rolling the hash on a new revision. reported it in https://github.com/NixOS/experimental-nix-installer/issues/47 and opened up a draft of everything in https://github.com/NixOS/nix/pull/14002. i'm pretty sure it's in a good state, minus this bug? | 06:14:06 |
| getchoo | interesting, lix's fork of the installer doesn't have this issue: https://git.lix.systems/lix-project/lix-installer/src/commit/e4048682396999c11069f99f9b323f1d4a333bbc/src/action/base/setup_default_profile.rs#L57 seems to go back to an earlier implementation that was removed after they forked in https://github.com/DeterminateSystems/nix-installer/commit/16ee60a2f7d5d172db91484729f15dd09d0e5383 | 06:28:04 |
| getchoo | ....nevermind | 06:37:04 |
 Mic92 | getchoo: should we just fix the regex? | 11:22:45 |
| Mic92 | by making it more specific | 11:23:01 |