#[serde(default)]
    pub extra_dependencies: Vec<String>,

use std::collections::HashMap;

use std::collections::{HashMap, HashSet};

use libpijul::{Base32, ChannelRef, MutTxnT, MutTxnTExt, TxnT, TxnTExt};

use libpijul::{Base32, ChannelRef, ChannelTxnT, MutTxnT, MutTxnTExt, TxnT, TxnTExt};

        let mut extra = Vec::new();
        for h in repo.config.extra_dependencies.iter() {
            let (h, c) = txn.hash_from_prefix(h)?;
            if txn
                .get_changeset(txn.changes(&channel.borrow()), c)?
                .is_none()
            {
                bail!(
                    "Change {:?} (from .pijul/config) is not on channel {:?}",
                    h,
                    channel.borrow().name
                )
            }
            extra.push(h)
        }

            &extra,

        extra_deps: &[libpijul::Hash],

        let change =

        let mut change =

        let current: HashSet<_> = change.dependencies.iter().cloned().collect();
        for dep in extra_deps.iter() {
            if !current.contains(dep) {
                change.dependencies.push(*dep)
            }
        }

        let change = if self.all {

        let mut change = if self.all {

        let current: HashSet<_> = change.dependencies.iter().cloned().collect();
        for dep in extra_deps.iter() {
            if !current.contains(dep) {
                change.dependencies.push(*dep)
            }
        }