Support dependency inheritance from workspace manifest

src/dependencies.rs

@@ -41,6 +41,7 @@ pub fn try_get_workspace_manifest(manifest_dir: &Directory) -> Result<WorkspaceM
     let manifest_str = fs::read_to_string(cargo_toml_path)?;
     let mut manifest: WorkspaceManifest = toml::from_str(&manifest_str)?;
 
+    fix_dependencies(&mut manifest.workspace.dependencies, manifest_dir);
     fix_patches(&mut manifest.patch, manifest_dir);
     fix_replacements(&mut manifest.replace, manifest_dir);
 
@@ -84,6 +85,8 @@ pub struct WorkspaceManifest {
 pub struct WorkspaceWorkspace {
     #[serde(default)]
     pub package: WorkspacePackage,
+    #[serde(default)]
+    pub dependencies: Map<String, Dependency>,
 }
 
 #[derive(Deserialize, Default, Debug)]
@@ -142,6 +145,8 @@ pub struct Dependency {
     pub tag: Option<String>,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub rev: Option<String>,
+    #[serde(default, skip_serializing_if = "is_false")]
+    pub workspace: bool,
     #[serde(flatten)]
     pub rest: Map<String, Value>,
 }
@@ -188,6 +193,10 @@ fn is_true(boolean: &bool) -> bool {
     *boolean
 }
 
+fn is_false(boolean: &bool) -> bool {
+    !*boolean
+}
+
 impl Default for EditionOrInherit {
     fn default() -> Self {
         EditionOrInherit::Edition(Edition::default())
@@ -267,6 +276,7 @@ impl<'de> Deserialize<'de> for Dependency {
                     branch: None,
                     tag: None,
                     rev: None,
+                    workspace: false,
                     rest: Map::new(),
                 })
             }

src/manifest.rs

@@ -66,7 +66,10 @@ pub struct Build {
 }
 
 #[derive(Serialize, Debug)]
-pub struct Workspace {}
+pub struct Workspace {
+    #[serde(skip_serializing_if = "Map::is_empty")]
+    pub dependencies: Map<String, Dependency>,
+}
 
 impl Default for Edition {
     fn default() -> Self {

src/run.rs

@@ -241,7 +241,9 @@ impl Runner {
             dependencies: Map::new(),
             target: source_manifest.target,
             bins: Vec::new(),
-            workspace: Some(Workspace {}),
+            workspace: Some(Workspace {
+                dependencies: workspace_manifest.workspace.dependencies,
+            }),
             // Within a workspace, only the [patch] and [replace] sections in
             // the workspace root's Cargo.toml are applied by Cargo.
             patch: workspace_manifest.patch,
@@ -267,6 +269,7 @@ impl Runner {
                 branch: None,
                 tag: None,
                 rev: None,
+                workspace: false,
                 rest: Map::new(),
             },
         );