Check for existing install location

src/bin/juliainstaller.rs

@@ -379,6 +379,35 @@
  }
  }
 
+ if install_choices.install_location.exists() {
+ println!("You are trying to install Juliaup into the folder");
+ println!("`{}`,", install_choices.install_location);
+ println!("but that folder already exists.");
+
+ if args.disable_confirmation_prompt {
+ println!();
+ println!(
+ "Please remove the folder or use interactive mode."
+ );
+
+ return Ok(());
+ } else {
+ let continue_with_setup = Confirm::with_theme(theme.as_ref())
+ .with_prompt("Do you want to continue with the installation and overwrite the existing Juliaup installation folder?")
+ .default(true)
+ .interact_opt()?;
+
+ if !continue_with_setup.unwrap_or(false) {
+ return Ok(());
+ }
+
+ std::fs::remove_dir_all(install_choices.install_location)
+ .with_context(|| format!("Failed to delete folder `{}`.", install_choices.install_location))?;
+
+ println!();
+ }
+ }
+
  let juliaupselfbin = install_choices.install_location.join("bin");
 
  trace!("Set juliaupselfbin to `{:?}`", juliaupselfbin);