Replace gix with configurable libgit2 diffs

src/app/projects.rs

@@ -368,31 +368,31 @@ impl App {
 }
 
 fn read_git_state(path: &Path) -> Option<GitState> {
-    let repository = gix::discover(path).ok()?;
+    let repository = git2::Repository::discover(path).ok()?;
     let mut branches = repository
-        .references()
+        .branches(Some(git2::BranchType::Local))
         .ok()?
-        .local_branches()
-        .ok()?
-        .map(|reference| {
-            reference
-                .map(|reference| String::from_utf8_lossy(reference.name().shorten()).into_owned())
+        .map(|branch| {
+            branch.and_then(|(branch, _)| {
+                branch
+                    .name_bytes()
+                    .map(|name| String::from_utf8_lossy(name).into_owned())
+            })
         })
         .collect::<Result<Vec<_>, _>>()
         .ok()?;
     branches.sort();
     branches.dedup();
 
-    let current = repository
-        .head_name()
-        .ok()?
-        .map(|name| String::from_utf8_lossy(name.shorten()).into_owned());
+    let head = repository.find_reference("HEAD").ok()?;
+    let current = head.symbolic_target_bytes().and_then(|target| {
+        target
+            .strip_prefix(b"refs/heads/")
+            .map(|name| String::from_utf8_lossy(name).into_owned())
+    });
     let label = current.clone().unwrap_or_else(|| {
-        repository
-            .head_id()
-            .ok()
-            .and_then(|id| id.shorten().ok())
-            .map(|id| format!("detached @ {id}"))
+        head.target()
+            .map(|id| format!("detached @ {}", &id.to_string()[..7]))
             .unwrap_or_else(|| "No branch".to_owned())
     });
     Some(GitState {