Don't error out if there are no packages to clean

src/operations/clean.rs

@@ -1,3 +1,5 @@
+use std::process::Command;
+
 use crate::crash;
 use crate::info;
 use crate::internal::commands::ShellCommand;
@@ -16,56 +18,82 @@ pub fn clean(options: Options) {
         .wait_with_output()
         .silent_unwrap(AppExitCode::PacmanError);
 
-    info(format!(
-        "Removing orphans would uninstall the following packages: \n{}",
-        &orphaned_packages.stdout
-    ));
-    let cont = prompt("Continue?".to_string(), false);
-    if !cont {
-        info("Exiting".to_string());
-        std::process::exit(AppExitCode::PacmanError as i32);
-    }
+    if orphaned_packages.stdout.as_str() == "" {
+        info("No orphaned packages found".to_string());
+    } else {
+        info(format!(
+            "Removing orphans would uninstall the following packages: \n{}",
+            &orphaned_packages.stdout
+        ));
+        let cont = prompt("Continue?".to_string(), false);
+        if !cont {
+            info("Exiting".to_string());
+            std::process::exit(AppExitCode::PacmanError as i32);
+        }
 
-    let mut pacman_args = vec!["-Rns"];
-    if noconfirm {
-        pacman_args.push("--noconfirm");
-    }
+        let mut pacman_args = vec!["-Rns"];
+        if noconfirm {
+            pacman_args.push("--noconfirm");
+        }
 
-    let orphaned_packages_vec = orphaned_packages.stdout.split('\n').collect::<Vec<&str>>();
-    for package in &orphaned_packages_vec {
-        if package.len() > 0 {
-            pacman_args.push(package);
+        let orphaned_packages_vec = orphaned_packages.stdout.split('\n').collect::<Vec<&str>>();
+        for package in &orphaned_packages_vec {
+            if !package.is_empty() {
+                pacman_args.push(package);
+            }
         }
-    }
 
-    if verbosity >= 1 {
-        log(format!("Removing orphans: {:?}", orphaned_packages_vec));
-    }
+        if verbosity >= 1 {
+            log(format!("Removing orphans: {:?}", orphaned_packages_vec));
+        }
 
-    let pacman_result = ShellCommand::pacman()
-        .elevated()
-        .args(pacman_args)
-        .wait()
-        .silent_unwrap(AppExitCode::PacmanError);
+        let pacman_result = ShellCommand::pacman()
+            .elevated()
+            .args(pacman_args)
+            .wait()
+            .silent_unwrap(AppExitCode::PacmanError);
 
-    if pacman_result.success() {
-        info("Successfully removed orphans".to_string());
-    } else {
-        crash(
-            "Failed to remove orphans".to_string(),
-            AppExitCode::PacmanError,
-        );
+        if pacman_result.success() {
+            info("Successfully removed orphans".to_string());
+        } else {
+            crash(
+                "Failed to remove orphans".to_string(),
+                AppExitCode::PacmanError,
+            );
+        }
     }
 
     let clear_cache = prompt("Also clear pacman's package cache?".to_string(), false);
     if clear_cache {
-        let mut pacman_args = vec!["-Scc"];
+        let mut pacman_args = vec!["-Sc"];
         if noconfirm {
             pacman_args.push("--noconfirm");
         }
 
+        let mut paccache_args = vec!["-r"];
+        if noconfirm {
+            paccache_args.push("--noconfirm");
+        }
+
+        if verbosity >= 1 {
+            log("Clearing using `paccache -r`".to_string());
+        }
+
+        Command::new("sudo")
+            .arg("paccache")
+            .args(paccache_args)
+            .spawn()
+            .unwrap_or_else(|e| {
+                crash(
+                    format!("Couldn't clear cache using `paccache -r`, {}", e),
+                    AppExitCode::PacmanError,
+                )
+            })
+            .wait()
+            .unwrap();
+
         if verbosity >= 1 {
-            log("Clearing package cache".to_string());
+            log("Clearing using `pacman -Sc`".to_string());
         }
 
         let pacman_result = ShellCommand::pacman()