feat: Support passing workspace to --manifest-path (#1246)

Previously it will load the root `Cargo.toml` and treat it as the
manifest for the crate, now it will check its `package.name` and would
search for the workspace if the `package.name` does not match the crate
name.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

crates/binstalk/src/helpers/cargo_toml_workspace.rs

@@ -16,7 +16,8 @@ use crate::{errors::BinstallError, manifests::cargo_toml_binstall::Meta};
 ///
 /// WARNING: This is a blocking operation.
 ///
-///  * `workspace_path` - should be a directory
+///  * `workspace_path` - can be a directory (path to workspace) or
+///    a file (path to `Cargo.toml`).
 pub fn load_manifest_from_workspace(
     workspace_path: impl AsRef<Path>,
     crate_name: impl AsRef<str>,
@@ -72,16 +73,21 @@ fn load_manifest_from_workspace_inner(
         workspace_path.display()
     );
 
-    let mut workspace_paths = vec![workspace_path.to_owned()];
+    let manifest_path = if workspace_path.is_file() {
+        workspace_path.to_owned()
+    } else {
+        workspace_path.join("Cargo.toml")
+    };
 
-    while let Some(workspace_path) = workspace_paths.pop() {
-        let p = workspace_path.join("Cargo.toml");
-        let manifest = Manifest::<Meta>::from_path_with_metadata(&p)?;
+    let mut manifest_paths = vec![manifest_path];
+
+    while let Some(manifest_path) = manifest_paths.pop() {
+        let manifest = Manifest::<Meta>::from_path_with_metadata(&manifest_path)?;
 
         let name = manifest.package.as_ref().map(|p| &*p.name);
         debug!(
             "Loading from {}, manifest.package.name = {:#?}",
-            p.display(),
+            manifest_path.display(),
             name
         );
 
@@ -102,13 +108,15 @@ fn load_manifest_from_workspace_inner(
                 .map(|pat| Pattern::new(&pat))
                 .collect::<Result<Vec<_>, _>>()?;
 
+            let workspace_path = manifest_path.parent().unwrap();
+
             for member in members {
-                for path in Pattern::new(&member)?.glob_dirs(&workspace_path)? {
+                for path in Pattern::new(&member)?.glob_dirs(workspace_path)? {
                     if !exclude_patterns
                         .iter()
                         .any(|exclude| exclude.matches_with_trailing(&path))
                     {
-                        workspace_paths.push(workspace_path.join(path));
+                        manifest_paths.push(workspace_path.join(path).join("Cargo.toml"));
                     }
                 }
             }

crates/binstalk/src/ops/resolve.rs

@@ -14,14 +14,17 @@ use leon::Template;
 use maybe_owned::MaybeOwned;
 use semver::{Version, VersionReq};
 use tempfile::TempDir;
-use tokio::task::{block_in_place, spawn_blocking};
+use tokio::task::spawn_blocking;
 use tracing::{debug, info, instrument, warn};
 
 use crate::{
     bins,
     errors::{BinstallError, VersionParseError},
     fetchers::{Data, Fetcher, TargetData},
-    helpers::{self, download::ExtractedFiles, remote::Client, target_triple::TargetTriple},
+    helpers::{
+        self, cargo_toml_workspace::load_manifest_from_workspace, download::ExtractedFiles,
+        remote::Client, target_triple::TargetTriple,
+    },
     manifests::cargo_toml_binstall::{Meta, PkgMeta, PkgOverride},
     ops::{CargoTomlFetchOverride, Options},
 };
@@ -363,7 +366,12 @@ impl PackageInfo {
 
         // Fetch crate via crates.io, git, or use a local manifest path
         let manifest = match opts.cargo_toml_fetch_override.as_ref() {
-            Some(Path(manifest_path)) => load_manifest_path(manifest_path)?,
+            Some(Path(manifest_path)) => {
+                let manifest_path = manifest_path.clone();
+                let name = name.clone();
+
+                spawn_blocking(move || load_manifest_path(manifest_path, &name)).await??
+            }
             #[cfg(feature = "git")]
             Some(Git(git_url)) => {
                 let git_url = git_url.clone();
@@ -373,7 +381,7 @@ impl PackageInfo {
                     let dir = TempDir::new()?;
                     helpers::git::Repository::shallow_clone(git_url, dir.as_ref())?;
 
-                    helpers::cargo_toml_workspace::load_manifest_from_workspace(dir.as_ref(), &name)
+                    load_manifest_from_workspace(dir.as_ref(), &name)
                 })
                 .await??
             }
@@ -448,29 +456,24 @@ impl PackageInfo {
 }
 
 /// Load binstall metadata from the crate `Cargo.toml` at the provided path
-pub fn load_manifest_path<P: AsRef<Path>>(
+///
+/// This is a blocking function.
+pub fn load_manifest_path<P: AsRef<Path>, N: AsRef<str>>(
     manifest_path: P,
+    name: N,
 ) -> Result<Manifest<Meta>, BinstallError> {
-    let manifest_path = manifest_path.as_ref();
-
-    block_in_place(|| {
-        let manifest_path = if manifest_path.is_dir() {
-            Cow::Owned(manifest_path.join("Cargo.toml"))
-        } else if manifest_path.is_file() {
-            Cow::Borrowed(manifest_path)
-        } else {
-            return Err(BinstallError::CargoManifestPath);
-        };
-
+    fn inner(manifest_path: &Path, crate_name: &str) -> Result<Manifest<Meta>, BinstallError> {
         debug!(
-            "Reading manifest at local path: {}",
+            "Reading crate {crate_name} manifest at local path: {}",
             manifest_path.display()
         );
 
         // Load and parse manifest (this checks file system for binary output names)
-        let manifest = Manifest::<Meta>::from_path_with_metadata(manifest_path)?;
+        let manifest = load_manifest_from_workspace(manifest_path, crate_name)?;
 
         // Return metadata
         Ok(manifest)
-    })
+    }
+
+    inner(manifest_path.as_ref(), name.as_ref())
 }

crates/binstalk/tests/parse-meta.rs

@@ -1,12 +1,14 @@
 use binstalk::ops::resolve::load_manifest_path;
 use cargo_toml::Product;
+use std::path::PathBuf;
 
 #[test]
 fn parse_meta() {
-    let mut manifest_dir = std::env::var("CARGO_MANIFEST_DIR").unwrap();
-    manifest_dir.push_str("/tests/parse-meta.Cargo.toml");
+    let mut manifest_dir = PathBuf::from(std::env::var_os("CARGO_MANIFEST_DIR").unwrap());
+    manifest_dir.push("tests/parse-meta.Cargo.toml");
 
-    let manifest = load_manifest_path(&manifest_dir).expect("Error parsing metadata");
+    let manifest =
+        load_manifest_path(&manifest_dir, "cargo-binstall-test").expect("Error parsing metadata");
     let package = manifest.package.unwrap();
     let meta = package.metadata.and_then(|m| m.binstall).unwrap();