vendor: add summary output for crates vendored

src/cargo/ops/vendor.rs

@@ -41,7 +41,7 @@ pub fn vendor(ws: &Workspace<'_>, opts: &VendorOptions<'_>) -> CargoResult<()> {
     }
     let workspaces = extra_workspaces.iter().chain(Some(ws)).collect::<Vec<_>>();
     let _lock = gctx.acquire_package_cache_lock(CacheLockMode::DownloadExclusive)?;
-    let vendor_config = sync(gctx, &workspaces, opts).context("failed to sync")?;
+    let (vendor_config, count) = sync(gctx, &workspaces, opts).context("failed to sync")?;
 
     if gctx.shell().verbosity() != Verbosity::Quiet {
         if vendor_config.source.is_empty() {
@@ -55,6 +55,13 @@ pub fn vendor(ws: &Workspace<'_>, opts: &VendorOptions<'_>) -> CargoResult<()> {
         }
     }
 
+    if count > 0 {
+        gctx.shell().status(
+            "Vendored",
+            format!("{} crates into {}", count, opts.destination.display()),
+        )?;
+    }
+
     Ok(())
 }
 
@@ -121,7 +128,7 @@ fn sync(
     gctx: &GlobalContext,
     workspaces: &[&Workspace<'_>],
     opts: &VendorOptions<'_>,
-) -> CargoResult<VendorConfig> {
+) -> CargoResult<(VendorConfig, usize)> {
     let dry_run = false;
     let vendor_dir = try_canonicalize(opts.destination);
     let vendor_dir = vendor_dir.as_deref().unwrap_or(opts.destination);
@@ -419,7 +426,7 @@ fn sync(
         paths::remove_dir(vendor_dir)?;
     }
 
-    Ok(VendorConfig { source: config })
+    Ok((VendorConfig { source: config }, ids.len()))
 }
 
 fn cp_sources(

tests/testsuite/build_scripts_multiple.rs

@@ -357,6 +357,7 @@ fn verify_vendor_multiple_build_scripts() {
 [WARNING] ignoring `package.build` entry `build2.rs` as it is not included in the published package
 To use vendored sources, add this to your .cargo/config.toml for this project:
 
+    Vendored 1 crates into vendor
 
 "#]])
         .run();

tests/testsuite/vendor.rs

@@ -1989,6 +1989,7 @@ fn dont_delete_non_registry_sources_with_respect_source_config() {
    Vendoring log v0.3.5 ([ROOT]/foo/vendor/log) to new-vendor-dir/log
 To use vendored sources, add this to your .cargo/config.toml for this project:
 
+    Vendored 1 crates into new-vendor-dir
 
 "#]])
         .with_stdout_data(str![[r#"
@@ -2166,6 +2167,7 @@ fn vendor_local_registry() {
    Vendoring bar v0.0.0 ([ROOT]/home/.cargo/registry/src/-[HASH]/bar-0.0.0) to vendor/bar
 To use vendored sources, add this to your .cargo/config.toml for this project:
 
+    Vendored 1 crates into vendor
 
 "#]])
         .run();
@@ -2256,3 +2258,37 @@ fn vendor_filters_git_files_recursively() {
     assert!(!p.root().join("vendor/bar/.gitattributes").exists());
     assert!(p.root().join("vendor/bar/src/lib.rs").exists());
 }
+
+#[cargo_test]
+fn vendor_summary_output() {
+    let p = project()
+        .file(
+            "Cargo.toml",
+            r#"
+                [package]
+                name = "foo"
+                version = "0.1.0"
+
+                [dependencies]
+                bar = "0.1.0"
+            "#,
+        )
+        .file("src/lib.rs", "")
+        .build();
+
+    Package::new("bar", "0.1.0").publish();
+
+    p.cargo("vendor --respect-source-config")
+        .with_stderr_data(str![[r#"
+[UPDATING] `[..]` index
+[LOCKING] 1 package to latest compatible version
+[DOWNLOADING] crates ...
+[DOWNLOADED] bar v0.1.0 (registry `[..]`)
+   Vendoring bar v0.1.0 ([..]bar-0.1.0) to vendor/bar
+To use vendored sources, add this to your .cargo/config.toml for this project:
+
+    Vendored 1 crates into vendor
+
+"#]])
+        .run();
+}