zacor 0.1.0

Package manager and dispatcher for zr — install, manage, and run modular CLI packages
Documentation 
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use crate::deps;
use crate::error::*;
use crate::receipt;
use std::path::Path;

pub fn run(home: &Path, name: &str) -> Result<()> {
    let mut r = receipt::require(home, name)?;

    if r.active {
        eprintln!("{} is already active", name);
        return Ok(());
    }

    // Check dependencies before enabling
    let def_path = crate::paths::definition_path(home, name, &r.current);
    if let Ok(def) = crate::package_definition::parse_file(&def_path) {
        let unsatisfied = deps::check_package_deps(home, &def)?;
        if let Some(u) = unsatisfied.first() {
            let status = if u.installed { "not active" } else { "not installed" };
            bail!("cannot enable '{}': dependency '{}' is {}", name, u.name, status);
        }
    }

    r.active = true;
    receipt::write(home, name, &r)?;
    eprintln!("enabled {}", name);
    Ok(())
}