Do not clear env when launching commands

src/command.rs

@@ -1,7 +1,7 @@
 use crate::*;
 use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
-use std::io::{stdout, Write};
+use std::io::Write;
 use std::path::PathBuf;
 use std::process::{Command, ExitStatus, Stdio};
 use std::{fmt, fs, io};
@@ -187,7 +187,7 @@ impl Updater {
             updater.systems.push(sys);
         }
 
-        eprintln!("{:#?}", updater);
+        // eprintln!("{:#?}", updater);
 
         Ok(updater)
     }
@@ -344,14 +344,13 @@ impl ActualCmd {
     fn execute(&self, opt: &Opt) -> io::Result<ExitStatus> {
         let mut cmd = Command::new(&self.exe);
 
-        cmd.args(&self.params).env_clear().envs(&self.env);
+        cmd.args(&self.params).envs(&self.env);
 
         if let Some(cdir) = &self.current_dir {
             cmd.current_dir(std::fs::canonicalize(cdir)?);
         }
 
         print!("Executing: {}", self);
-        stdout().flush()?;
 
         if opt.quiet {
             // FIXME: stdin does not work with sudo?