Fix log crashing in subdirectories

Replace `gix::open` by `gix::discover`. `gix::open` errors when the
passed directory is not a git repository.

asyncgit/src/error.rs

@@ -94,8 +94,8 @@ pub enum Error {
 	Sign(#[from] crate::sync::sign::SignError),
 
 	///
-	#[error("gix::open error: {0}")]
-	GixOpen(#[from] Box<gix::open::Error>),
+	#[error("gix::discover error: {0}")]
+	GixDiscover(#[from] Box<gix::discover::Error>),
 
 	///
 	#[error("gix::reference::find::existing error: {0}")]
@@ -139,8 +139,8 @@ impl<T> From<crossbeam_channel::SendError<T>> for Error {
 	}
 }
 
-impl From<gix::open::Error> for Error {
-	fn from(error: gix::open::Error) -> Self {
-		Self::GixOpen(Box::new(error))
+impl From<gix::discover::Error> for Error {
+	fn from(error: gix::discover::Error) -> Self {
+		Self::GixDiscover(Box::new(error))
 	}
 }

asyncgit/src/revlog.rs

@@ -276,7 +276,7 @@ impl AsyncLog {
 		let mut entries = vec![CommitId::default(); LIMIT_COUNT];
 		entries.resize(0, CommitId::default());
 
-		let mut repo = gix::open(repo_path.gitpath())?;
+		let mut repo = gix::discover(repo_path.gitpath())?;
 		let mut walker =
 			LogWalkerWithoutFilter::new(&mut repo, LIMIT_COUNT)?;
 

asyncgit/src/sync/logwalker.rs

@@ -114,7 +114,7 @@ impl<'a> LogWalker<'a> {
 ///
 /// `SharedCommitFilterFn` requires access to a `git2::repo::Repository` because, under the hood,
 /// it calls into functions that work with a `git2::repo::Repository`. It seems unwise to open a
-/// repo both through `gix::open` and `Repository::open_ext` at the same time, so there is a
+/// repo both through `gix::discover` and `Repository::open_ext` at the same time, so there is a
 /// separate struct that works with `gix::Repository` only.
 ///
 /// A more long-term option is to refactor filtering to work with a `gix::Repository` and to remove
@@ -271,7 +271,7 @@ mod tests {
 		stage_add_file(repo_path, file_path).unwrap();
 		let oid2 = commit(repo_path, "commit2").unwrap();
 
-		let mut repo = gix::open(repo_path.gitpath()).unwrap();
+		let mut repo = gix::discover(repo_path.gitpath()).unwrap();
 		let mut walk = LogWalkerWithoutFilter::new(&mut repo, 100)?;
 		let mut items = Vec::new();
 		assert!(matches!(walk.read(&mut items), Ok(2)));