From 0080efea9386d46f65d1862fcb90eb44999d9761 Mon Sep 17 00:00:00 2001
From: nsfisis <nsfisis@gmail.com>
Date: Mon, 23 Feb 2026 11:38:42 +0900
Subject: feat(vcs): add mozart-vcs crate for VCS repository support

Implement VCS driver/downloader infrastructure mirroring Composer's VCS
subsystem. Includes drivers for GitHub, GitLab, Bitbucket, Forgejo, Git,
Hg, and SVN with API-based metadata resolution, plus source downloaders
for Git/Hg/SVN. Integrates into mozart-registry via vcs_bridge module to
scan VCS repositories and feed discovered packages into the SAT resolver.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 crates/mozart-vcs/src/util/hg.rs | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 crates/mozart-vcs/src/util/hg.rs

(limited to 'crates/mozart-vcs/src/util/hg.rs')

diff --git a/crates/mozart-vcs/src/util/hg.rs b/crates/mozart-vcs/src/util/hg.rs
new file mode 100644
index 0000000..7f5abcc
--- /dev/null
+++ b/crates/mozart-vcs/src/util/hg.rs
@@ -0,0 +1,30 @@
+use std::path::Path;
+
+use anyhow::Result;
+
+use crate::process::{ProcessExecutor, ProcessOutput};
+
+/// Mercurial utility for command execution.
+pub struct HgUtil {
+    process: ProcessExecutor,
+}
+
+impl HgUtil {
+    pub fn new(process: ProcessExecutor) -> Self {
+        Self { process }
+    }
+
+    /// Execute a Mercurial command.
+    pub fn execute(&self, args: &[&str], cwd: Option<&Path>) -> Result<ProcessOutput> {
+        let mut full_args = vec!["hg"];
+        full_args.extend_from_slice(args);
+        self.process.execute_checked(&full_args, cwd)
+    }
+
+    /// Execute a Mercurial command, not erroring on non-zero exit.
+    pub fn execute_unchecked(&self, args: &[&str], cwd: Option<&Path>) -> Result<ProcessOutput> {
+        let mut full_args = vec!["hg"];
+        full_args.extend_from_slice(args);
+        self.process.execute(&full_args, cwd)
+    }
+}
-- 
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