Correct "toolchain list" command verbose option

src/cli/common.rs

@@ -8,6 +8,7 @@ use lazy_static::lazy_static;
 use rustup::utils::notify::NotificationLevel;
 use rustup::utils::utils;
 use rustup::{Cfg, Notification, Toolchain, UpdateStatus};
+use std::fs;
 use std::io::{BufRead, BufReader, ErrorKind, Write};
 use std::path::Path;
 use std::process::{Command, Stdio};
@@ -424,14 +425,28 @@ pub fn list_installed_components(toolchain: &Toolchain<'_>) -> Result<()> {
     Ok(())
 }
 
-pub fn list_toolchains(cfg: &Cfg, is_verbose: bool) -> Result<()> {
-    let toolchains = cfg.list_toolchains()?;
-    let toolchain_info = if is_verbose {
-        format!("\t{}", &cfg.rustup_dir.display())
+fn print_toolchain_path(cfg: &Cfg, toolchain: &str, if_default: &str, verbose: bool) -> Result<()> {
+    let toolchain_path = {
+        let mut t_path = cfg.toolchains_dir.clone();
+        t_path.push(&toolchain);
+        t_path
+    };
+    let toolchain_meta = fs::symlink_metadata(&toolchain_path)?;
+    let toolchain_path = if verbose {
+        if toolchain_meta.is_dir() {
+            format!("\t{}", toolchain_path.display())
+        } else {
+            format!("\t{}", fs::read_link(toolchain_path)?.display())
+        }
     } else {
-        String::from("")
+        String::new()
     };
+    println!("{}{}{}", &toolchain, if_default, toolchain_path);
+    Ok(())
+}
 
+pub fn list_toolchains(cfg: &Cfg, verbose: bool) -> Result<()> {
+    let toolchains = cfg.list_toolchains()?;
     if toolchains.is_empty() {
         println!("no installed toolchains");
     } else if let Ok(Some(def_toolchain)) = cfg.find_default() {
@@ -441,11 +456,13 @@ pub fn list_toolchains(cfg: &Cfg, is_verbose: bool) -> Result<()> {
             } else {
                 ""
             };
-            println!("{}{}{}", &toolchain, if_default, toolchain_info);
+            print_toolchain_path(cfg, &toolchain, if_default, verbose)
+                .expect("Failed to list toolchains' directories");
         }
     } else {
         for toolchain in toolchains {
-            println!("{}{}", &toolchain, toolchain_info);
+            print_toolchain_path(cfg, &toolchain, "", verbose)
+                .expect("Failed to list toolchains' directories");
         }
     }
     Ok(())

tests/cli-misc.rs

@@ -981,3 +981,19 @@ fn override_by_toolchain_on_the_command_line() {
         expect_stdout_ok(config, &["rustup", "default"], "nightly-x86_64-");
     });
 }
+
+#[test]
+fn toolchain_link_then_list_verbose() {
+    setup(&|config| {
+        let path_1 = config.customdir.join("custom-1");
+        let path_1 = path_1.to_string_lossy();
+        expect_ok(
+            config,
+            &["rustup", "toolchain", "link", "custom-1", &path_1],
+        );
+        #[cfg(windows)]
+        expect_stdout_ok(config, &["rustup", "toolchain", "list", "-v"], "\\custom-1");
+        #[cfg(not(windows))]
+        expect_stdout_ok(config, &["rustup", "toolchain", "list", "-v"], "/custom-1");
+    });
+}

tests/cli-v1.rs

@@ -104,14 +104,31 @@ fn list_toolchains() {
             &["rustup", "toolchain", "list", "-v"],
             "(default)\t",
         );
+        #[cfg(windows)]
         expect_stdout_ok(
             config,
-            &["rustup", "toolchain", "list", "--verbose"],
-            "(default)\t",
+            &["rustup", "toolchain", "list", "-v"],
+            "\\toolchains\\nightly-x86",
+        );
+        #[cfg(not(windows))]
+        expect_stdout_ok(
+            config,
+            &["rustup", "toolchain", "list", "-v"],
+            "/toolchains/nightly-x86",
         );
         expect_stdout_ok(config, &["rustup", "toolchain", "list"], "beta-2015-01-01");
-        expect_stdout_ok(config, &["rustup", "toolchain", "list", "-v"], "\t");
-        expect_stdout_ok(config, &["rustup", "toolchain", "list", "--verbose"], "\t");
+        #[cfg(windows)]
+        expect_stdout_ok(
+            config,
+            &["rustup", "toolchain", "list", "-v"],
+            "\\toolchains\\beta-2015-01-01",
+        );
+        #[cfg(not(windows))]
+        expect_stdout_ok(
+            config,
+            &["rustup", "toolchain", "list", "-v"],
+            "/toolchains/beta-2015-01-01",
+        );
     });
 }
 

tests/cli-v2.rs

@@ -148,14 +148,31 @@ fn list_toolchains() {
             &["rustup", "toolchain", "list", "-v"],
             "(default)\t",
         );
+        #[cfg(windows)]
         expect_stdout_ok(
             config,
-            &["rustup", "toolchain", "list", "--verbose"],
-            "(default)\t",
+            &["rustup", "toolchain", "list", "-v"],
+            "\\toolchains\\nightly-x86",
+        );
+        #[cfg(not(windows))]
+        expect_stdout_ok(
+            config,
+            &["rustup", "toolchain", "list", "-v"],
+            "/toolchains/nightly-x86",
         );
         expect_stdout_ok(config, &["rustup", "toolchain", "list"], "beta-2015-01-01");
-        expect_stdout_ok(config, &["rustup", "toolchain", "list", "-v"], "\t");
-        expect_stdout_ok(config, &["rustup", "toolchain", "list", "--verbose"], "\t");
+        #[cfg(windows)]
+        expect_stdout_ok(
+            config,
+            &["rustup", "toolchain", "list", "-v"],
+            "\\toolchains\\beta-2015-01-01",
+        );
+        #[cfg(not(windows))]
+        expect_stdout_ok(
+            config,
+            &["rustup", "toolchain", "list", "-v"],
+            "/toolchains/beta-2015-01-01",
+        );
     });
 }