Errors Building Linfa Clustering and Linfa Reduction

[zicklag]

Hey there, interesting project! I was just getting it installed and found that I couldn't compile the docs for linfa-clustering or linfa-reduction without turning off default-features because of this error:

    Updating crates.io index
error: failed to select a version for `linfa-reduction`.
    ... required by package `nasa-gallery v0.1.0 (/home/zicklag/git/zicklag/nasa-gallery)`
versions that meet the requirements `*` are: 0.2.0

the package `nasa-gallery` depends on `linfa-reduction`, with features: `openblas-src` but `linfa-reduction` does not have these features.


failed to select a version for `linfa-reduction` which could resolve this conflict

[bytesnake]

Hey, we had some problems uploading the new version to crates.io because of move of ownership from the original author. We will try to fix that as soon as possible. 27.11.2020 17:03:15 Zicklag <[email protected]>:

…

Hey there, interesting project! I was just getting it installed and found that I couldn't compile the docs for linfa-clustering or linfa-reduction without turning off default-features because of this error:     Updating crates.io index error: failed to select a version for `linfa-reduction`.     ... required by package `nasa-gallery v0.1.0 (/home/zicklag/git/zicklag/nasa-gallery)` versions that meet the requirements `*` are: 0.2.0 the package `nasa-gallery` depends on `linfa-reduction`, with features: `openblas-src` but `linfa-reduction` does not have these features. failed to select a version for `linfa-reduction` which could resolve this conflict — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub[#63], or unsubscribe[https://github.com/notifications/unsubscribe-auth/AAHRRKPPWWPZW6VV4MQKLFDSR7ETPANCNFSM4UFCHKNQ]. [data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAEIAAABCCAYAAADjVADoAAAAAXNSR0IArs4c6QAAAARzQklUCAgICHwIZIgAAAAnSURBVHic7cEBDQAAAMKg909tDwcUAAAAAAAAAAAAAAAAAAAAAPBjRFIAASHKmKkAAAAASUVORK5CYII=###24x24:true###][Tracking-Bild][https://github.com/notifications/beacon/AAHRRKMW4ORA6XVLC4H36NLSR7ETPA5CNFSM4UFCHKN2YY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4LGX4PUA.gif]

[zicklag]

No problem, I was just messing around and probably won't end up actually using linfa. Also I just discovered that I'm pretty sure the cause is the fact that the default feature depends on a dev-dependency, which doesn't work when included from an outside crate.

[bytesnake]

uff this is blocked on rust-lang/cargo#7915 for stable builds. I removed the features and the linalg backend is using the system openblas library now exclusively. I will ping again when we managed to transfer ownership

[bytesnake]

everything except linfa-clustering should be published now. Here a small example for PCA:

Cargo.toml

[package]
#...

[dependencies]
ndarray = "0.13"
ndarray-rand = "0.11"
openblas-src = { version = "0.9", default-features = false, features = ["system"] }

linfa = "0.2.1"
linfa-reduction = "0.2.1"  

src/main.rs

use ndarray::Array;
use ndarray_rand::rand_distr::Uniform;
use ndarray_rand::RandomExt;

use linfa::prelude::*;
use linfa_reduction::Pca;

fn main() {
    let data = Array::random((100, 10), Uniform::new(-10., 10f64));
    let dataset = Dataset::from(data.clone());

    let proj_data = Pca::params(2)
        .fit(&dataset)
        .predict(data.view());

    dbg!(&proj_data);
}