Init commit

bakery/src/doctor.rs

@@ -0,0 +1,72 @@
+use anyhow::Result;
+use std::process::Command;
+
+/// Check whether a list of system dependencies are present.
+/// Returns (missing, warnings) — missing are hard fails, warnings are advisory.
+pub fn check_deps(deps: &[String]) -> Result<Vec<String>> {
+    let mut missing = Vec::new();
+    for dep in deps {
+        if !dep_present(dep) {
+            missing.push(dep.clone());
+        }
+    }
+    Ok(missing)
+}
+
+fn dep_present(dep: &str) -> bool {
+    // Try `which` first (covers executables like `iw`, `nmcli`).
+    if which(dep) {
+        return true;
+    }
+    // Try `pkg-config --exists` for library packages (gtk4, gtk4-layer-shell, librsvg).
+    pkg_config_exists(dep)
+}
+
+fn which(bin: &str) -> bool {
+    Command::new("which")
+        .arg(bin)
+        .output()
+        .map(|o| o.status.success())
+        .unwrap_or(false)
+}
+
+fn pkg_config_exists(lib: &str) -> bool {
+    // Arch package names map directly to pkg-config names for GTK libs.
+    Command::new("pkg-config")
+        .arg("--exists")
+        .arg(lib)
+        .output()
+        .map(|o| o.status.success())
+        .unwrap_or(false)
+}
+
+/// Print a formatted doctor report for a list of system deps.
+/// Returns true if all deps are satisfied.
+pub fn report(package_name: &str, deps: &[String]) -> bool {
+    if deps.is_empty() {
+        println!("  {package_name}: no system deps required");
+        return true;
+    }
+    match check_deps(deps) {
+        Err(e) => {
+            eprintln!("  error running doctor: {e}");
+            false
+        }
+        Ok(missing) => {
+            if missing.is_empty() {
+                println!("  {package_name}: all system deps satisfied");
+                true
+            } else {
+                eprintln!(
+                    "  {package_name}: missing system deps: {}",
+                    missing.join(", ")
+                );
+                eprintln!(
+                    "  install with: sudo pacman -S {}",
+                    missing.join(" ")
+                );
+                false
+            }
+        }
+    }
+}