fix(repository): honour handleTransparentWorkspaces setting in Yarn/Berry

crates/turborepo-repository/src/package_graph/builder.rs

@@ -10,8 +10,7 @@ use turborepo_graph_utils as graph;
 use turborepo_lockfiles::Lockfile;
 
 use super::{
-    dep_splitter::DependencySplitter, npmrc::NpmRc, PackageGraph, PackageInfo, PackageName,
-    PackageNode,
+    dep_splitter::DependencySplitter, PackageGraph, PackageInfo, PackageName, PackageNode,
 };
 use crate::{
     discovery::{
@@ -352,16 +351,6 @@ impl<'a, T: PackageDiscovery> BuildState<'a, ResolvedWorkspaces, T> {
         &mut self,
         package_manager: &PackageManager,
     ) -> Result<(), Error> {
-        let npmrc = match package_manager {
-            PackageManager::Pnpm | PackageManager::Pnpm6 | PackageManager::Pnpm9 => {
-                let npmrc_path = self.repo_root.join_component(".npmrc");
-                match npmrc_path.read_existing_to_string().ok().flatten() {
-                    Some(contents) => NpmRc::from_reader(contents.as_bytes()).ok(),
-                    None => None,
-                }
-            }
-            _ => None,
-        };
         let split_deps = self
             .workspaces
             .iter()
@@ -374,7 +363,6 @@ impl<'a, T: PackageDiscovery> BuildState<'a, ResolvedWorkspaces, T> {
                         &entry.package_json_path,
                         &self.workspaces,
                         package_manager,
-                        npmrc.as_ref(),
                         entry.package_json.all_dependencies(),
                     ),
                 )
@@ -566,7 +554,6 @@ impl Dependencies {
         workspace_json_path: &AnchoredSystemPathBuf,
         workspaces: &HashMap<PackageName, PackageInfo>,
         package_manager: &PackageManager,
-        npmrc: Option<&NpmRc>,
         dependencies: I,
     ) -> Self {
         let resolved_workspace_json_path = repo_root.resolve(workspace_json_path);
@@ -576,7 +563,7 @@ impl Dependencies {
         let mut internal = HashSet::new();
         let mut external = BTreeMap::new();
         let splitter =
-            DependencySplitter::new(repo_root, workspace_dir, workspaces, package_manager, npmrc);
+            DependencySplitter::new(repo_root, workspace_dir, workspaces, package_manager);
         for (name, version) in dependencies.into_iter() {
             if let Some(workspace) = splitter.is_internal(name, version) {
                 internal.insert(workspace);

crates/turborepo-repository/src/package_graph/dep_splitter.rs

@@ -5,7 +5,7 @@ use turbopath::{
     RelativeUnixPathBuf,
 };
 
-use super::{npmrc::NpmRc, PackageInfo, PackageName};
+use super::{PackageInfo, PackageName};
 use crate::package_manager::PackageManager;
 
 pub struct DependencySplitter<'a> {
@@ -21,15 +21,13 @@ impl<'a> DependencySplitter<'a> {
         workspace_dir: &'a AbsoluteSystemPath,
         workspaces: &'a HashMap<PackageName, PackageInfo>,
         package_manager: &PackageManager,
-        npmrc: Option<&'a NpmRc>,
     ) -> Self {
+        let link_workspace_packages = package_manager.link_workspace_packages(repo_root);
         Self {
             repo_root,
             workspace_dir,
             workspaces,
-            link_workspace_packages: npmrc
-                .and_then(|npmrc| npmrc.link_workspace_packages)
-                .unwrap_or(!matches!(package_manager, PackageManager::Pnpm9)),
+            link_workspace_packages,
         }
     }
 

crates/turborepo-repository/src/package_graph/mod.rs

@@ -19,7 +19,6 @@ use crate::{
 
 pub mod builder;
 mod dep_splitter;
-mod npmrc;
 
 pub use builder::{Error, PackageGraphBuilder};
 

crates/turborepo-repository/src/package_manager/mod.rs

@@ -1,7 +1,9 @@
 mod bun;
 mod npm;
+mod npmrc;
 mod pnpm;
 mod yarn;
+mod yarnrc;
 
 use std::{
     backtrace,
@@ -16,13 +18,16 @@ use lazy_regex::{lazy_regex, Lazy};
 use miette::{Diagnostic, NamedSource, SourceSpan};
 use node_semver::SemverError;
 use npm::NpmDetector;
+use npmrc::NpmRc;
 use regex::Regex;
 use serde::Deserialize;
 use thiserror::Error;
+use tracing::debug;
 use turbopath::{AbsoluteSystemPath, AbsoluteSystemPathBuf, RelativeUnixPath};
 use turborepo_errors::Spanned;
 use turborepo_lockfiles::Lockfile;
 use which::which;
+use yarnrc::YarnRc;
 
 use crate::{
     discovery,
@@ -190,6 +195,8 @@ pub enum Error {
     WorkspaceDiscovery(#[from] discovery::Error),
     #[error("missing packageManager field in package.json")]
     MissingPackageManager,
+    #[error(transparent)]
+    Yarnrc(#[from] yarnrc::Error),
 }
 
 impl From<std::convert::Infallible> for Error {
@@ -545,6 +552,34 @@ impl PackageManager {
             PackageManager::Pnpm | PackageManager::Pnpm9 | PackageManager::Berry => None,
         }
     }
+
+    /// Returns whether or not the package manager will select a package in the
+    /// workspace as a dependency if the `workspace:` protocol isn't used.
+    /// For example if a package in the workspace has `"lib": "1.2.3"` and
+    /// there's a package in the workspace with the name of `lib` and
+    /// version `1.2.3` if this is true, then the local `lib` package will
+    /// be used where `false` would use a `lib` package from the registry.
+    pub fn link_workspace_packages(&self, repo_root: &AbsoluteSystemPath) -> bool {
+        match self {
+            PackageManager::Berry => {
+                let yarnrc = YarnRc::from_file(repo_root)
+                    .inspect_err(|e| debug!("unable to read yarnrc: {e}"))
+                    .unwrap_or_default();
+                yarnrc.enable_transparent_workspaces
+            }
+            PackageManager::Pnpm9 | PackageManager::Pnpm | PackageManager::Pnpm6 => {
+                let npmrc = NpmRc::from_file(repo_root)
+                    .inspect_err(|e| debug!("unable to read npmrc: {e}"))
+                    .unwrap_or_default();
+                npmrc
+                    .link_workspace_packages
+                    // The default for pnpm 9 is false if not explicitly set
+                    // All previous versions had a default of true
+                    .unwrap_or(!matches!(self, PackageManager::Pnpm9))
+            }
+            PackageManager::Yarn | PackageManager::Bun | PackageManager::Npm => true,
+        }
+    }
 }
 
 #[cfg(test)]
@@ -553,6 +588,7 @@ mod tests {
 
     use pretty_assertions::assert_eq;
     use tempfile::TempDir;
+    use test_case::test_case;
 
     use super::*;
 
@@ -823,4 +859,34 @@ mod tests {
         assert_eq!(nested.workspaces.as_ref(), vec!["packages/**"]);
         Ok(())
     }
+
+    #[test_case(PackageManager::Npm, None, true)]
+    #[test_case(PackageManager::Yarn, None, true)]
+    #[test_case(PackageManager::Bun, None, true)]
+    #[test_case(PackageManager::Pnpm6, None, true)]
+    #[test_case(PackageManager::Pnpm, None, true)]
+    #[test_case(PackageManager::Pnpm, Some(false), false)]
+    #[test_case(PackageManager::Pnpm, Some(true), true)]
+    #[test_case(PackageManager::Pnpm9, None, false)]
+    #[test_case(PackageManager::Pnpm9, Some(true), true)]
+    #[test_case(PackageManager::Pnpm9, Some(false), false)]
+    #[test_case(PackageManager::Berry, None, true)]
+    #[test_case(PackageManager::Berry, Some(false), false)]
+    #[test_case(PackageManager::Berry, Some(true), true)]
+    fn test_link_workspace_packages(pm: PackageManager, enabled: Option<bool>, expected: bool) {
+        let tmpdir = tempfile::tempdir().unwrap();
+        let repo_root = AbsoluteSystemPath::from_std_path(tmpdir.path()).unwrap();
+        if let Some(enabled) = enabled {
+            repo_root
+                .join_component(npmrc::NPMRC_FILENAME)
+                .create_with_contents(format!("link-workspace-packages={enabled}"))
+                .unwrap();
+            repo_root
+                .join_component(yarnrc::YARNRC_FILENAME)
+                .create_with_contents(format!("enableTransparentWorkspaces: {enabled}"))
+                .unwrap();
+        }
+        let actual = pm.link_workspace_packages(repo_root);
+        assert_eq!(actual, expected);
+    }
 }

crates/turborepo-repository/src/package_graph/npmrc.rs → crates/turborepo-repository/src/package_manager/npmrc.rs

@@ -1,17 +1,22 @@
 use std::io;
 
 use ini::Ini;
+use turbopath::AbsoluteSystemPath;
+
+pub const NPMRC_FILENAME: &str = ".npmrc";
 
 #[derive(Debug, thiserror::Error)]
 pub enum Error {
+    #[error("encountered error reading .npmrc: {0}")]
+    Io(#[from] std::io::Error),
     #[error("encountered error parsing .npmrc: {0}")]
     Ini(#[from] ini::Error),
 }
 
 /// Representation of .npmrc used by both npm and pnpm to configure behavior
 /// The representation is intentionally incomplete and is only intended to
 /// contain settings that affect the package graph.
-#[derive(Debug, PartialEq, Eq, Clone)]
+#[derive(Debug, PartialEq, Eq, Clone, Default)]
 pub struct NpmRc {
     /// Used by pnpm to determine whether dependencies
     /// declared without an explicit workspace protocol
@@ -20,6 +25,16 @@ pub struct NpmRc {
 }
 
 impl NpmRc {
+    pub fn from_file(repo_root: &AbsoluteSystemPath) -> Result<Self, Error> {
+        let npmrc_path = repo_root.join_component(NPMRC_FILENAME);
+        let npmrc = npmrc_path
+            .read_existing_to_string()?
+            .map(|contents| Self::from_reader(contents.as_bytes()))
+            .transpose()?
+            .unwrap_or_default();
+        Ok(npmrc)
+    }
+
     pub fn from_reader(mut reader: impl io::Read) -> Result<Self, Error> {
         let ini = Ini::read_from(&mut reader)?;
         Ok(Self::from_ini(ini))

crates/turborepo-repository/src/package_manager/yarnrc.rs

@@ -0,0 +1,94 @@
+use std::io;
+
+use serde::Deserialize;
+use serde_yaml;
+use turbopath::AbsoluteSystemPath;
+
+pub const YARNRC_FILENAME: &str = ".yarnrc.yml";
+
+#[derive(Debug, thiserror::Error)]
+pub enum Error {
+    #[error("encountered error opening yarnrc.yml: {0}")]
+    Io(#[from] std::io::Error),
+    #[error("encountered error parsing yarnrc.yml: {0}")]
+    SerdeYaml(#[from] serde_yaml::Error),
+}
+
+/// A yarnrc.yaml file representing settings affecting the package graph.
+#[derive(Debug, PartialEq, Eq, Clone, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct YarnRc {
+    /// Used by Yarn(Berry) as `enableTransparentWorkspaces`.
+    /// When true, treats local workspaces that match a package name
+    /// and semver range as correct match resulting in turbo including
+    /// the package in the dependency graph
+    #[serde(default = "default_enable_transparent_workspaces")]
+    pub enable_transparent_workspaces: bool,
+}
+
+fn default_enable_transparent_workspaces() -> bool {
+    true
+}
+
+impl Default for YarnRc {
+    fn default() -> YarnRc {
+        YarnRc {
+            enable_transparent_workspaces: default_enable_transparent_workspaces(),
+        }
+    }
+}
+
+impl YarnRc {
+    pub fn from_reader(mut reader: impl io::Read) -> Result<Self, Error> {
+        let config: YarnRc = serde_yaml::from_reader(&mut reader)?;
+        Ok(config)
+    }
+
+    pub fn from_file(repo_root: &AbsoluteSystemPath) -> Result<Self, Error> {
+        let yarnrc_path = repo_root.join_component(YARNRC_FILENAME);
+        let yarnrc = yarnrc_path
+            .read_existing_to_string()?
+            .map(|contents| Self::from_reader(contents.as_bytes()))
+            .transpose()?
+            .unwrap_or_default();
+        Ok(yarnrc)
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_parse_empty_yarnrc() {
+        let empty = YarnRc::from_reader(b"".as_slice()).unwrap();
+        assert_eq!(
+            empty,
+            YarnRc {
+                enable_transparent_workspaces: true
+            }
+        );
+    }
+
+    #[test]
+    fn test_parses_transparent_workspaces() {
+        let empty = YarnRc::from_reader(b"enableTransparentWorkspaces: false".as_slice()).unwrap();
+        assert_eq!(
+            empty,
+            YarnRc {
+                enable_transparent_workspaces: false
+            }
+        );
+    }
+
+    #[test]
+    fn test_parses_additional_settings() {
+        let empty = YarnRc::from_reader(b"httpProxy: \"http://my-proxy.com\"".as_slice()).unwrap();
+        assert_eq!(
+            empty,
+            YarnRc {
+                enable_transparent_workspaces: true
+            }
+        );
+    }
+}