Function git_program

tests/common/mod.rs:434–453

Resolves the `git` executable to an absolute path exactly once per process. Under heavy parallel test load (nextest spawns one process per test, each spawning several `git` subprocesses), a bare `Command::new("git")` PATH lookup can transiently fail the spawn with `ENOENT` ("No such file or directory") even though git is installed. Resolving to an absolute path up front — with an optional `GIT` e

()

/// front — with an optional `GIT` env override — removes the per-spawn PATH
/// walk and makes the lookup deterministic.
pub fn git_program() -> std::ffi::OsString {
    use std::sync::OnceLock;
    static GIT: OnceLock<std::ffi::OsString> = OnceLock::new();
    GIT.get_or_init(|| {
        if let Some(explicit) = std::env::var_os("GIT") {
            return explicit;
        }
        let exe_name = if cfg!(windows) { "git.exe" } else { "git" };
        if let Some(paths) = std::env::var_os("PATH") {
            for dir in std::env::split_paths(&paths) {
                let candidate = dir.join(exe_name);
                if candidate.is_file() {
                    return candidate.into_os_string();
                }
            }
        }
        std::ffi::OsString::from("git")
    })
    .clone()
}

#[cfg(unix)]
pub fn daemon_socket_path(home: &Path) -> PathBuf {