Add --show-skipped (fix #501) (#502)

src/steps/os/linux.rs

@@ -455,13 +455,12 @@ fn upgrade_nixos(sudo: &Option<PathBuf>, cleanup: bool, run_type: RunType) -> Re
 }
 
 pub fn run_needrestart(sudo: Option<&PathBuf>, run_type: RunType) -> Result<()> {
-    let sudo = require_option(sudo)?;
+    let sudo = require_option(sudo, String::from("sudo is not installed"))?;
     let needrestart = require("needrestart")?;
     let distribution = Distribution::detect()?;
 
     if distribution.redhat_based() {
-        debug!("Skipping needrestart on Redhat based distributions");
-        return Err(SkipStep.into());
+        return Err(SkipStep(String::from("needrestart will be ran by the package manager")).into());
     }
 
     print_separator("Check for needed restarts");
@@ -475,7 +474,7 @@ pub fn run_fwupdmgr(run_type: RunType) -> Result<()> {
     let fwupdmgr = require("fwupdmgr")?;
 
     if is_wsl()? {
-        return Err(SkipStep.into());
+        return Err(SkipStep(String::from("Should not run in WSL")).into());
     }
 
     print_separator("Firmware upgrades");
@@ -508,11 +507,11 @@ pub fn flatpak_update(run_type: RunType) -> Result<()> {
 }
 
 pub fn run_snap(sudo: Option<&PathBuf>, run_type: RunType) -> Result<()> {
-    let sudo = require_option(sudo)?;
+    let sudo = require_option(sudo, String::from("sudo is not installed"))?;
     let snap = require("snap")?;
 
     if !PathBuf::from("/var/snapd.socket").exists() && !PathBuf::from("/run/snapd.socket").exists() {
-        return Err(SkipStep.into());
+        return Err(SkipStep(String::from("Snapd socket does not exist")).into());
     }
     print_separator("snap");
 
@@ -520,7 +519,7 @@ pub fn run_snap(sudo: Option<&PathBuf>, run_type: RunType) -> Result<()> {
 }
 
 pub fn run_pihole_update(sudo: Option<&PathBuf>, run_type: RunType) -> Result<()> {
-    let sudo = require_option(sudo)?;
+    let sudo = require_option(sudo, String::from("sudo is not installed"))?;
     let pihole = require("pihole")?;
     Path::new("/opt/pihole/update.sh").require()?;
 
@@ -530,7 +529,7 @@ pub fn run_pihole_update(sudo: Option<&PathBuf>, run_type: RunType) -> Result<()
 }
 
 pub fn run_etc_update(sudo: Option<&PathBuf>, run_type: RunType) -> Result<()> {
-    let sudo = require_option(sudo)?;
+    let sudo = require_option(sudo, String::from("sudo is not installed"))?;
     let etc_update = require("etc-update")?;
     print_separator("etc-update");