mise 2026.9.4

Dev tools, env vars, and tasks in one CLI
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use std::path::PathBuf;

use eyre::Result;

use crate::config::{Config, Settings};
use crate::dirs;

/// Link the active tools' skills where an agent looks for them
///
/// Writes one symlink per skill into DIR, named after the skill and pointing
/// at the directory of the version that is active here. DIR defaults to the
/// `skills.dir` setting, `.claude/skills`, under the project root: the
/// directory of the nearest mise config. Run it again after `mise use` changes
/// a version and the links follow, or set `skills.auto_sync` to have mise do
/// that after every install and `mise use`.
///
/// Only links mise made, which point into its installs directory, are ever
/// replaced or, with --prune or the `skills.prune` setting, removed. A real
/// directory or a link of your own at a skill's name is left alone and reported.
#[derive(Debug, usage_rs::Args)]
#[usage(
    verbatim_doc_comment,
    example(
        r###"mise skills sync"###,
        help = r###"into the project's .claude/skills, or wherever skills.dir says"###
    ),
    example(
        r###"mise skills sync --dir .agents/skills --prune"###,
        help = r###"somewhere else, and drop links for skills that are no longer active"###
    ),
    effect = "write"
)]
pub(super) struct SkillsSync {
    /// The directory to link skills into
    #[usage(long, value_hint = usage_rs::ValueHint::DirPath)]
    dir: Option<PathBuf>,

    /// Link into ~/.claude/skills instead of the project's directory
    #[usage(long, short, conflicts = "dir")]
    global: bool,

    /// Remove links mise made for skills that are no longer active
    #[usage(long)]
    prune: bool,
}

impl SkillsSync {
    pub(super) async fn run(self) -> Result<()> {
        let config = Config::get().await?;
        let skills = crate::packslip::active_skills(&config).await?;
        let settings = Settings::get();
        let dir = match (&self.dir, self.global) {
            (Some(dir), _) => dir.clone(),
            (None, true) => crate::packslip::skills_dir(&dirs::HOME),
            (None, false) => crate::packslip::skills_dir(
                &config
                    .project_root
                    .clone()
                    .map(Ok)
                    .unwrap_or_else(std::env::current_dir)?,
            ),
        };
        let prune = self.prune || settings.skills.prune;
        if skills.is_empty() && !prune {
            miseprintln!("no skills declared by the active tools; nothing to link");
            return Ok(());
        }
        let report = crate::packslip::sync_skills(&dir, &skills, &dirs::INSTALLS, prune)?;
        for name in &report.linked {
            let skill = skills.iter().find(|s| &s.name == name);
            miseprintln!(
                "linked {} -> {}",
                dir.join(name).display(),
                skill
                    .map(|s| s.path.display().to_string())
                    .unwrap_or_default()
            );
        }
        for name in &report.pruned {
            miseprintln!("removed {}", dir.join(name).display());
        }
        for (name, why) in &report.skipped {
            warn!("skipped {name}: {why}");
        }
        if report.linked.is_empty() && report.pruned.is_empty() {
            miseprintln!(
                "{} skill(s) already linked in {}",
                report.unchanged.len(),
                dir.display()
            );
        }
        Ok(())
    }
}