fix(vendor): Make vendor use Manifest's "original" Cargo.toml

src/cargo/ops/vendor.rs

@@ -1,5 +1,5 @@
 use crate::core::shell::Verbosity;
-use crate::core::{GitReference, Workspace};
+use crate::core::{GitReference, Package, Workspace};
 use crate::ops;
 use crate::sources::path::PathSource;
 use crate::sources::CRATES_IO_REGISTRY;
@@ -9,6 +9,7 @@ use cargo_util::{paths, Sha256};
 use serde::Serialize;
 use std::collections::HashSet;
 use std::collections::{BTreeMap, BTreeSet, HashMap};
+use std::ffi::OsStr;
 use std::fs::{self, File, OpenOptions};
 use std::io::{Read, Write};
 use std::path::{Path, PathBuf};
@@ -225,7 +226,7 @@ fn sync(
         let pathsource = PathSource::new(src, id.source_id(), config);
         let paths = pathsource.list_files(pkg)?;
         let mut map = BTreeMap::new();
-        cp_sources(src, &paths, &dst, &mut map, &mut tmp_buf)
+        cp_sources(pkg, src, &paths, &dst, &mut map, &mut tmp_buf)
             .with_context(|| format!("failed to copy over vendored sources for: {}", id))?;
 
         // Finally, emit the metadata about this package
@@ -313,6 +314,7 @@ fn sync(
 }
 
 fn cp_sources(
+    pkg: &Package,
     src: &Path,
     paths: &[PathBuf],
     dst: &Path,
@@ -352,35 +354,52 @@ fn cp_sources(
             .fold(dst.to_owned(), |acc, component| acc.join(&component));
 
         paths::create_dir_all(dst.parent().unwrap())?;
+        let mut dst_opts = OpenOptions::new();
+        dst_opts.write(true).create(true).truncate(true);
+        let cksum = if dst.file_name() == Some(OsStr::new("Cargo.toml")) {
+            let contents = toml::to_string_pretty(pkg.manifest().original())?;
+            copy_and_checksum(
+                &dst,
+                &mut dst_opts,
+                &mut contents.as_bytes(),
+                "Generated Cargo.toml",
+                tmp_buf,
+            )?
+        } else {
+            let mut src = File::open(&p).with_context(|| format!("failed to open {:?}", &p))?;
+            #[cfg(unix)]
+            {
+                use std::os::unix::fs::{MetadataExt, OpenOptionsExt};
+                let src_metadata = src
+                    .metadata()
+                    .with_context(|| format!("failed to stat {:?}", p))?;
+                dst_opts.mode(src_metadata.mode());
+            }
+            copy_and_checksum(&dst, &mut dst_opts, &mut src, p.to_str().unwrap(), tmp_buf)?
+        };
 
-        let cksum = copy_and_checksum(p, &dst, tmp_buf)?;
         cksums.insert(relative.to_str().unwrap().replace("\\", "/"), cksum);
     }
     Ok(())
 }
 
-fn copy_and_checksum(src_path: &Path, dst_path: &Path, buf: &mut [u8]) -> CargoResult<String> {
-    let mut src = File::open(src_path).with_context(|| format!("failed to open {:?}", src_path))?;
-    let mut dst_opts = OpenOptions::new();
-    dst_opts.write(true).create(true).truncate(true);
-    #[cfg(unix)]
-    {
-        use std::os::unix::fs::{MetadataExt, OpenOptionsExt};
-        let src_metadata = src
-            .metadata()
-            .with_context(|| format!("failed to stat {:?}", src_path))?;
-        dst_opts.mode(src_metadata.mode());
-    }
+fn copy_and_checksum<T: Read>(
+    dst_path: &Path,
+    dst_opts: &mut OpenOptions,
+    contents: &mut T,
+    contents_path: &str,
+    buf: &mut [u8],
+) -> CargoResult<String> {
     let mut dst = dst_opts
         .open(dst_path)
         .with_context(|| format!("failed to create {:?}", dst_path))?;
     // Not going to bother setting mode on pre-existing files, since there
     // shouldn't be any under normal conditions.
     let mut cksum = Sha256::new();
     loop {
-        let n = src
+        let n = contents
             .read(buf)
-            .with_context(|| format!("failed to read from {:?}", src_path))?;
+            .with_context(|| format!("failed to read from {:?}", contents_path))?;
         if n == 0 {
             break Ok(cksum.finish_hex());
         }

tests/testsuite/vendor.rs

@@ -926,3 +926,64 @@ fn no_remote_dependency_no_vendor() {
         .run();
     assert!(!p.root().join("vendor").exists());
 }
+
+#[cargo_test]
+fn vendor_crate_with_ws_inherit() {
+    let git = git::new("ws", |p| {
+        p.file(
+            "Cargo.toml",
+            r#"
+                [workspace]
+                members = ["bar"]
+                [workspace.package]
+                version = "0.1.0"
+            "#,
+        )
+        .file(
+            "bar/Cargo.toml",
+            r#"
+                    [package]
+                    name = "bar"
+                    version.workspace = true
+                "#,
+        )
+        .file("bar/src/lib.rs", "")
+    });
+
+    let p = project()
+        .file(
+            "Cargo.toml",
+            &format!(
+                r#"
+                    [package]
+                    name = "foo"
+                    version = "0.1.0"
+
+                    [dependencies]
+                    bar = {{ git = '{}' }}
+                "#,
+                git.url()
+            ),
+        )
+        .file("src/lib.rs", "")
+        .build();
+
+    p.cargo("vendor --respect-source-config").run();
+    p.change_file(
+        ".cargo/config",
+        &format!(
+            r#"
+                [source."{}"]
+                git = "{}"
+                replace-with = "vendor"
+
+                [source.vendor]
+                directory = "vendor"
+            "#,
+            git.url(),
+            git.url()
+        ),
+    );
+
+    p.cargo("check").run()
+}