alchemist/build.rs

use std::env;
use std::fs;
use std::path::Path;

fn main() {
    println!("cargo:rerun-if-changed=web/dist");

    if env::var_os("CARGO_FEATURE_EMBED_WEB").is_none() {
        return;
    }

    let dist_dir = Path::new("web/dist");
    if let Err(err) = fs::create_dir_all(dist_dir) {
        panic!("failed to create web/dist for embed-web feature: {err}");
    }
}