os: add support for Exherbo (#202)

Signed-off-by: Marc-Antoine Perennou <Marc-Antoine@Perennou.com>

src/steps/os/linux.rs

@@ -30,6 +30,7 @@ pub enum Distribution {
     Suse,
     Void,
     Solus,
+    Exherbo,
 }
 
 impl Distribution {
@@ -50,6 +51,7 @@ impl Distribution {
             (Some("void"), _) => Distribution::Void,
             (Some("solus"), _) => Distribution::Solus,
             (Some("gentoo"), _) => Distribution::Gentoo,
+            (Some("exherbo"), _) => Distribution::Exherbo,
             _ => Err(ErrorKind::UnknownLinuxDistribution)?,
         })
     }
@@ -77,6 +79,7 @@ impl Distribution {
             Distribution::Suse => upgrade_suse(&sudo, run_type),
             Distribution::Void => upgrade_void(&sudo, run_type),
             Distribution::Solus => upgrade_solus(&sudo, run_type),
+            Distribution::Exherbo => upgrade_exherbo(&sudo, cleanup, run_type),
         }
     }
 
@@ -260,6 +263,38 @@ fn upgrade_solus(sudo: &Option<PathBuf>, run_type: RunType) -> Result<(), Error>
     Ok(())
 }
 
+fn upgrade_exherbo(sudo: &Option<PathBuf>, cleanup: bool, run_type: RunType) -> Result<(), Error> {
+    if let Some(sudo) = &sudo {
+        run_type.execute(&sudo).args(&["/usr/bin/cave", "sync"]).check_run()?;
+
+        run_type
+            .execute(&sudo)
+            .args(&["/usr/bin/cave", "resolve", "world", "-c1", "-Cs", "-km", "-Km", "-x"])
+            .check_run()?;
+
+        if cleanup {
+            run_type
+                .execute(&sudo)
+                .args(&["/usr/bin/cave", "purge", "-x"])
+                .check_run()?;
+        }
+
+        run_type
+            .execute(&sudo)
+            .args(&["/usr/bin/cave", "fix-linkage", "-x", "--", "-Cs"])
+            .check_run()?;
+
+        run_type
+            .execute(&sudo)
+            .args(&["/usr/bin/eclectic", "config", "interactive"])
+            .check_run()?;
+    } else {
+        print_warning("No sudo detected. Skipping system upgrade");
+    }
+
+    Ok(())
+}
+
 pub fn run_needrestart(sudo: Option<&PathBuf>, run_type: RunType) -> Result<(), Error> {
     let sudo = require_option(sudo)?;
     let needrestart = require("needrestart")?;
@@ -409,4 +444,9 @@ mod tests {
     fn test_gentoo() {
         test_template(&include_str!("os_release/gentoo"), Distribution::Gentoo);
     }
+
+    #[test]
+    fn test_exherbo() {
+        test_template(&include_str!("os_release/exherbo"), Distribution::Exherbo);
+    }
 }

src/steps/os/os_release/exherbo

@@ -0,0 +1,7 @@
+NAME="Exherbo"
+PRETTY_NAME="Exherbo Linux"
+ID="exherbo"
+ANSI_COLOR="0;32"
+HOME_URL="https://www.exherbo.org/"
+SUPPORT_URL="irc://irc.freenode.net/#exherbo"
+BUG_REPORT_URL="https://bugs.exherbo.org/"