Search dep in other tables

Signed-off-by: hi-rustin <rustin.liu@gmail.com>

src/cargo/util/toml_mut/manifest.rs

@@ -367,22 +367,77 @@ impl LocalManifest {
     pub fn remove_from_table(&mut self, table_path: &[String], name: &str) -> CargoResult<()> {
         let parent_table = self.get_table_mut(table_path)?;
 
-        let dep = parent_table
-            .get_mut(name)
-            .filter(|t| !t.is_none())
-            .ok_or_else(|| non_existent_dependency_err(name, table_path.join(".")))?;
-
-        // remove the dependency
-        *dep = toml_edit::Item::None;
+        match parent_table.get_mut(name).filter(|t| !t.is_none()) {
+            Some(dep) => {
+                // remove the dependency
+                *dep = toml_edit::Item::None;
+
+                // remove table if empty
+                if parent_table.as_table_like().unwrap().is_empty() {
+                    *parent_table = toml_edit::Item::None;
+                }
+            }
+            None => {
+                // Search in other tables.
+                let table_paths = self.get_all_deps_table_paths();
+                let found_table_path = table_paths
+                    .iter()
+                    .find(|table_path| {
+                        let table = self.get_table(table_path).unwrap();
+                        table.get(name).filter(|t| !t.is_none()).is_some()
+                    })
+                    .map(|table_path| table_path.join("."));
 
-        // remove table if empty
-        if parent_table.as_table_like().unwrap().is_empty() {
-            *parent_table = toml_edit::Item::None;
+                return Err(non_existent_dependency_err(
+                    name,
+                    table_path.join("."),
+                    found_table_path,
+                ));
+            }
         }
 
         Ok(())
     }
 
+    fn get_all_deps_table_paths(&self) -> Vec<Vec<String>> {
+        let mut result = Vec::new();
+
+        for table in DepTable::KINDS {
+            let dependency_type = table.kind.kind_table();
+            // Dependencies can be in the three standard sections...
+            if self
+                .data
+                .get(dependency_type)
+                .map(|t| t.is_table_like())
+                .unwrap_or(false)
+            {
+                result.push(vec![dependency_type.to_owned()])
+            }
+
+            // And in `target.<target>.(build-/dev-)dependencies`.
+            result.extend(
+                self.data
+                    .as_table()
+                    .get("target")
+                    .and_then(toml_edit::Item::as_table_like)
+                    .into_iter()
+                    .flat_map(toml_edit::TableLike::iter)
+                    .filter_map(|(target_name, target_table)| {
+                        let dependency_table = target_table.get(dependency_type)?;
+                        dependency_table.as_table_like().map(|_| {
+                            vec![
+                                "target".to_owned(),
+                                target_name.to_owned(),
+                                dependency_type.to_owned(),
+                            ]
+                        })
+                    }),
+            );
+        }
+
+        result
+    }
+
     /// Remove references to `dep_key` if its no longer present.
     pub fn gc_dep(&mut self, dep_key: &str) {
         let explicit_dep_activation = self.is_explicit_dep_activation(dep_key);
@@ -537,9 +592,14 @@ fn non_existent_table_err(table: impl std::fmt::Display) -> anyhow::Error {
 
 fn non_existent_dependency_err(
     name: impl std::fmt::Display,
-    table: impl std::fmt::Display,
+    search_table: impl std::fmt::Display,
+    found_table: Option<impl std::fmt::Display>,
 ) -> anyhow::Error {
-    anyhow::format_err!("the dependency `{name}` could not be found in `{table}`.")
+    let mut msg = format!("the dependency `{name}` could not be found in `{search_table}`.");
+    if let Some(found_table) = found_table {
+        msg.push_str(&format!("But it was found in `{found_table}`.",));
+    }
+    anyhow::format_err!(msg)
 }
 
 fn remove_array_index(array: &mut toml_edit::Array, index: usize) {