ngit compatible

crates/signed_git/src/lib.rs

@@ -20,7 +20,9 @@ pub use history::{
     CommitList, FileCommit, MAX_LISTED_COMMITS, all_commits, head_commit, worktree_all_commits,
     worktree_commit, worktree_commit_range_commits, worktree_last_commits,
 };
-pub use nip34::{GraspSignals, Nip34Binding, Nip34Kind, detect_nip34, is_grasp_url};
+pub use nip34::{
+    GraspSignals, Nip34Binding, Nip34Kind, detect_nip34, is_grasp_url, set_nostr_repo,
+};
 pub use patch::{
     apply_patch, format_patch_between, patch_commits, patch_diffs, split_patch_series,
 };

crates/signed_git/src/nip34.rs

@@ -1,5 +1,6 @@
 use std::path::Path;
 
+use anyhow::Result;
 use gix::bstr::ByteSlice;
 use nostr::prelude::*;
 
@@ -182,6 +183,16 @@ pub fn detect_nip34(repo_path: &Path) -> Option<Nip34Binding> {
     })
 }
 
+/// Record a repository's NIP-34 coordinate in its local `nostr.repo` config.
+pub fn set_nostr_repo(repo_path: &Path, naddr: &str) -> Result<()> {
+    let repo = gix::open(repo_path)?;
+
+    crate::remote::edit_local_config(&repo, |config| {
+        config.set_raw_value("nostr.repo", naddr)?;
+        Ok(())
+    })
+}
+
 /// Mirrors `nak`'s `IsGraspURL`: two path segments, a path of at least 65 bytes,
 /// and a first segment that decodes as an `npub`.
 pub fn is_grasp_url(url: &str) -> bool {
@@ -360,6 +371,21 @@ mod tests {
         assert_eq!(binding.identifier.as_deref(), Some("my-repo"));
     }
 
+    #[test]
+    fn the_written_nostr_repo_marker_is_detected() {
+        let (_dir, path) = init_repo();
+        let owner = key();
+        let naddr = naddr(Kind::GitRepoAnnouncement, owner, "my-repo");
+
+        set_nostr_repo(&path, &naddr).expect("write marker");
+
+        let binding = detect_nip34(&path).expect("binding");
+        assert_eq!(binding.kind, Nip34Kind::Initialized);
+        assert!(binding.signals.nostr_repo_config);
+        assert_eq!(binding.owner, Some(owner));
+        assert_eq!(binding.identifier.as_deref(), Some("my-repo"));
+    }
+
     #[test]
     fn nostr_remote_is_a_nip34_clone() {
         let (_dir, path) = init_repo();

crates/signed_git/src/remote.rs

@@ -252,10 +252,7 @@ pub fn set_origin(repo_path: &Path, url: &str) -> Result<()> {
 }
 
 /// Apply `edit` to the repository-local configuration and persist it.
-///
-/// The config file is locked while it is read, edited and written back,
-/// like git would when running `git config` or `git remote`.
-fn edit_local_config(
+pub(crate) fn edit_local_config(
     repo: &gix::Repository,
     edit: impl FnOnce(&mut gix::config::File) -> Result<()>,
 ) -> Result<()> {

crates/signed_state/src/backend.rs

@@ -7,10 +7,11 @@ use anyhow::{Error, anyhow, bail};
 use bitcoin_hashes::sha1::Hash as Sha1Hash;
 use gpui::{App, AppContext, BackgroundExecutor, Context, Entity, EventEmitter, Global, Task};
 use nostr::event::IntoEventBuilder;
+use nostr::nips::nip19::Nip19Coordinate;
 use nostr_connect::prelude::*;
 use nostr_sdk::client::SyncSummary;
 use nostr_sdk::prelude::*;
-use signed_core::{Announcement, RepoAddr, build_state, filters, identifier_from_name};
+use signed_core::{Announcement, RepoAddr, build_state, filters, identifier_from_name, repo_addr};
 use signed_nostr::{SignedAuthUrlHandler, UniversalSigner, Update};
 
 use crate::git_store::repo_mirror_path;
@@ -743,6 +744,25 @@ impl Backend {
                 .await;
             }
 
+            // Record the ngit-compatible `nostr.repo` marker,
+            // so the next scan detects the repository instead of offering to publish it again.
+            let coordinate = repo_addr(event.pubkey, repo_id.clone());
+            match Nip19Coordinate::new(coordinate, servers.clone()).to_bech32() {
+                Ok(naddr) => {
+                    let path = path.clone();
+                    cx.background_spawn(async move {
+                        if let Err(error) = signed_git::set_nostr_repo(&path, &naddr) {
+                            log::warn!(
+                                "failed to record the NIP-34 marker for {}: {error}",
+                                path.display()
+                            );
+                        }
+                    })
+                    .await;
+                }
+                Err(error) => log::warn!("failed to encode the repository coordinate: {error}"),
+            }
+
             Announcement::from_event(&event).ok_or_else(|| anyhow!("failed to parse announcement"))
         })
     }