Find the main package if multiple packages have the same name

src/manifest/mod.rs

@@ -423,7 +423,10 @@ impl CrateData {
         let current_idx = data
             .packages
             .iter()
-            .position(|pkg| pkg.name == manifest.package.name)
+            .position(|pkg| {
+                pkg.name == manifest.package.name
+                    && CrateData::is_same_path(&pkg.manifest_path, &manifest_path)
+            })
             .ok_or_else(|| format_err!("failed to find package in metadata"))?;
 
         Ok(CrateData {
@@ -434,6 +437,15 @@ impl CrateData {
         })
     }
 
+    fn is_same_path(path1: &Path, path2: &Path) -> bool {
+        if let Ok(path1) = fs::canonicalize(&path1) {
+            if let Ok(path2) = fs::canonicalize(&path2) {
+                return path1 == path2;
+            }
+        }
+        path1 == path2
+    }
+
     /// Read the `manifest_path` file and deserializes it using the toml Deserializer.
     /// Returns a Result containing `ManifestAndUnsedKeys` which contains `CargoManifest`
     /// and a `BTreeSet<String>` containing the unused keys from the parsed file.

tests/all/build.rs

@@ -309,3 +309,70 @@ fn build_from_new() {
         .assert()
         .success();
 }
+
+#[test]
+fn build_crates_with_same_names() {
+    let fixture = utils::fixture::Fixture::new();
+    fixture
+        .readme()
+        .file(
+            "somename1/Cargo.toml",
+            r#"
+            [package]
+            authors = ["The wasm-pack developers"]
+            description = "so awesome rust+wasm package"
+            license = "WTFPL"
+            name = "somename"
+            repository = "https://github.com/rustwasm/wasm-pack.git"
+            version = "0.1.0"
+
+            [lib]
+            crate-type = ["cdylib"]
+
+            [dependencies]
+            wasm-bindgen = "0.2"
+            somenameother = { path = "../somename2", package = "somename" }
+            "#,
+        )
+        .file(
+            "somename1/src/lib.rs",
+            r#"
+            extern crate wasm_bindgen;
+            use wasm_bindgen::prelude::*;
+            #[wasm_bindgen]
+            pub fn method() -> i32 {
+                somenameother::method()
+            }
+            "#,
+        )
+        .file(
+            "somename2/Cargo.toml",
+            r#"
+            [package]
+            authors = ["The wasm-pack developers"]
+            description = "so awesome rust+wasm package"
+            license = "WTFPL"
+            name = "somename"
+            repository = "https://github.com/rustwasm/wasm-pack.git"
+            version = "0.1.1"
+
+            [lib]
+            crate-type = ["rlib"]
+            "#,
+        )
+        .file(
+            "somename2/src/lib.rs",
+            r#"
+            pub fn method() -> i32 {
+                0
+            }
+            "#,
+        );
+    fixture.install_local_wasm_bindgen();
+    fixture
+        .wasm_pack()
+        .current_dir(fixture.path.join("somename1"))
+        .arg("build")
+        .assert()
+        .success();
+}