Fixed #3

src/internal/rpc.rs

@@ -14,6 +14,9 @@ pub struct Package {
     #[serde(rename = "MakeDepends")]
     #[serde(default)]
     pub make_depends: Vec<String>,
+    #[serde(rename = "OptDepends")]
+    #[serde(default)]
+    pub opt_depends: Vec<String>,
 }
 
 #[derive(serde::Deserialize)]

src/main.rs

@@ -82,11 +82,41 @@ fn cmd_install(args: InstallArgs, options: Options) {
 
     if !sorted.repo.is_empty() {
         // If repo packages found, install them
-        operations::install(sorted.repo, options);
+        operations::install(sorted.repo.clone(), options);
     }
     if !sorted.aur.is_empty() {
         // If AUR packages found, install them
-        operations::aur_install(sorted.aur, options);
+        operations::aur_install(sorted.aur.clone(), options);
+    }
+
+    // Show optional dependencies for installed packages
+    info!("Showing optional dependencies for installed packages");
+    for r in sorted.repo {
+        info!("{}:", r);
+        std::process::Command::new("expac")
+            .args(&["-S", "-l", "\n  ", "  %O", &r])
+            .spawn()
+            .unwrap()
+            .wait()
+            .unwrap();
+    }
+    for a in sorted.aur {
+        info!("{}:", a);
+        let dir_bytes = std::process::Command::new("mktemp").arg("-d").output().unwrap().stdout;
+        let dir = String::from_utf8(dir_bytes).unwrap();
+        std::process::Command::new("bash")
+            .arg("-c")
+            .arg(format!("\
+                    cd {}
+                    curl -L https://aur.archlinux.org/cgit/aur.git/plain/PKGBUILD?h={} -o PKGBUILD -s
+                    source PKGBUILD
+                    printf '  %s\\n' \"${{optdepends[@]}}\"
+                ", dir, a))
+            .spawn()
+            .unwrap()
+            .wait()
+            .unwrap();
+        std::fs::remove_dir_all(&std::path::Path::new(&dir.trim())).unwrap();
     }
 }