Disable tlmgr in linux (fix #384) (#389)

src/error.rs

@@ -7,6 +7,7 @@ pub enum TopgradeError {
     ProcessFailed(ExitStatus),
 
     #[error("Sudo is required for this step")]
+    #[allow(dead_code)]
     SudoRequired,
 
     #[error("Unknown Linux Distribution")]

src/main.rs

@@ -274,6 +274,7 @@ fn run() -> Result<()> {
     }
 
     if config.should_run(Step::Tlmgr) {
+        #[cfg(not(target_os = "linux"))]
         runner.execute("tlmgr", || {
             generic::run_tlmgr_update(
                 #[cfg(unix)]

src/steps/generic.rs

@@ -1,6 +1,6 @@
+#![allow(unused_imports)]
 use crate::error::{SkipStep, TopgradeError};
 use crate::execution_context::ExecutionContext;
-#[allow(unused_imports)]
 use crate::executor::{CommandExt, ExecutorOutput, RunType};
 use crate::terminal::{print_separator, shell};
 use crate::utils::{self, PathExt};
@@ -117,6 +117,7 @@ pub fn run_stack_update(run_type: RunType) -> Result<()> {
     run_type.execute(&stack).arg("upgrade").check_run()
 }
 
+#[cfg(not(target_os = "linux"))]
 pub fn run_tlmgr_update(sudo: &Option<PathBuf>, run_type: RunType) -> Result<()> {
     let tlmgr = utils::require("tlmgr")?;
     let kpsewhich = utils::require("kpsewhich")?;