| 7 Mar 2025 |
 K900 | <bait>can we just disable fat lto globally</bait> | 19:28:37 |
| K900 | (this message is brought to you by uv taking 30 minutes and 10GB of RAM to build with fatlto) | 19:49:51 |
 Charles | In reply to @k900:0upti.me
can we just disable fat lto globally think of the children | 19:58:49 |
 antifuchs | who would want to put a 40-year-old file system on tapes... | 20:45:25 |
| 8 Mar 2025 |
|  antrz set a profile picture. | 19:06:45 |
|  Qyriad changed their display name from qyriad to Qyriad. | 21:41:03 |
| 9 Mar 2025 |
|  Andrew joined the room. | 15:32:07 |
| Andrew | I have this:
home-manager.users.${user} = {
home.packages = with pkgs; [
(fenix.stable.withComponents [
"cargo"
"clippy"
"rust-src"
"rustc"
"rustfmt"
])
fenix.targets.wasm32-wasip1.latest.rust-std
fenix.targets.wasm32-wasip2.latest.rust-std
fenix.targets.wasm32-unknown-unknown.latest.rust-std
rust-analyzer-nightly
cargo-expand
pkg-config
];
But cargo build still doesn't see any of the wasm targets installed. I used the overlay usage approach.
| 15:34:08 |
| Andrew | * I have this:
nixpkgs.overlays = [inputs.fenix.overlays.default];
home-manager.users.${user} = {
home.packages = with pkgs; [
(fenix.stable.withComponents [
"cargo"
"clippy"
"rust-src"
"rustc"
"rustfmt"
])
fenix.targets.wasm32-wasip1.latest.rust-std
fenix.targets.wasm32-wasip2.latest.rust-std
fenix.targets.wasm32-unknown-unknown.latest.rust-std
rust-analyzer-nightly
cargo-expand
pkg-config
];
But cargo build still doesn't see any of the wasm targets installed. I used the overlay usage approach.
| 15:34:33 |
| Andrew | Is there a different place where the different targets needs to go? | 15:39:52 |
| Andrew | * Is there a different place where the different targets need to go? | 15:39:57 |
 ghpzin | You probably need to do it differently with fenix, I would try with combine:
https://github.com/nix-community/fenix/blob/6781661e331d1efe11023d4a35f2dfe65272f248/README.md?plain=1#L139-L151 | 15:53:37 |
| ghpzin | You probably need to do it differently with fenix, I would try with combine:
https://github.com/nix-community/fenix/blob/6781661e331d1efe11023d4a35f2dfe65272f248/README.md?plain=1#L139-L151
(ignoring how it would be better to do it in shell and not "globally" in your HM config) | 15:58:10 |
| Andrew | home.packages = with pkgs; [
(fenix.combine [
(fenix.stable.withComponents [
"cargo"
"clippy"
"rust-src"
"rustc"
"rustfmt"
])
fenix.targets.wasm32-wasi.latest.rust-std
fenix.targets.wasm32-wasip1.latest.rust-std
fenix.targets.wasm32-wasip2.latest.rust-std
fenix.targets.wasm32-unknown-unknown.latest.rust-std
])
rust-analyzer-nightly
cargo-expand
pkg-config
];
| 15:59:17 |
| Andrew | Doesn't work. | 15:59:25 |
| Andrew | cb -r
error: failed to run `rustc` to learn about target-specific information
Caused by:
process didn't exit successfully: `rustc - --crate-name ___ --print=file-names --target wasm32-wasi --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=split-debuginfo --print=crate-name --print=cfg` (exit status: 1)
--- stderr
error: Error loading target specification: Could not find specification for target "wasm32-wasi". Run `rustc --print target-list` for a list of built-in targets
| 16:00:01 |
 emily | why use fenix for latest stable? | 16:00:15 |
| emily | you can just get it from Nixpkgs | 16:00:18 |
| Andrew | Does it matter? | 16:00:42 |
| emily | it might reduce your problems | 16:00:50 |
| emily | generally Nixpkgs Rust is less headache-inducing for cross in my experience | 16:01:03 |
| Andrew | Then how do I add these targets via nixpkgs? | 16:02:56 |
| ghpzin | Regarding your error, there is no wasm32-wasi target in stable.
I assume combine the way you want it, would look for it there. | 16:03:15 |
| emily | wasm32-unknown-unknown comes out of the box. otherwise pkgsCross | 16:03:15 |
| Andrew | I can't combine latest for main target and latest for other targets? | 16:04:28 |
| Andrew | * I can't combine stable for main target and latest for other targets? | 16:04:37 |
| emily | no, you cannot mix rustc version and std version | 16:04:55 |
| emily | those are tightly coupled | 16:04:57 |
| emily | also, target support is not solely in std. | 16:05:04 |
| Andrew | this is what fenix tells | 16:05:30 |
