Test tag deps.

nextgen/config/src/project/task_config.rs

@@ -33,7 +33,7 @@ fn validate_command_list<D, C>(args: &[String], _task: &D, _ctx: &C) -> Result<(
 
 pub fn validate_deps<D, C>(deps: &[Target], _data: &D, _context: &C) -> Result<(), ValidateError> {
     for (i, dep) in deps.iter().enumerate() {
-        if matches!(dep.scope, TargetScope::All | TargetScope::Tag(_)) {
+        if matches!(dep.scope, TargetScope::All) {
             return Err(ValidateError::with_segment(
                 "target scope not supported as a task dependency",
                 PathSegment::Index(i),

nextgen/config/tests/inherited_tasks_config_test.rs

@@ -329,14 +329,6 @@ implicitDeps:
                 InheritedTasksConfig::load(path.join(FILENAME))
             });
         }
-
-        #[test]
-        #[should_panic(expected = "target scope not supported as a task dependency")]
-        fn errors_on_tag_scope() {
-            test_load_config(FILENAME, "implicitDeps: ['#tag:task']", |path| {
-                InheritedTasksConfig::load(path.join(FILENAME))
-            });
-        }
     }
 
     mod implicit_inputs {

nextgen/config/tests/task_config_test.rs

@@ -153,12 +153,6 @@ deps:
         fn errors_on_all_scope() {
             test_parse_config("deps: [':task']", |code| TaskConfig::parse(code));
         }
-
-        #[test]
-        #[should_panic(expected = "target scope not supported as a task dependency")]
-        fn errors_on_tag_scope() {
-            test_parse_config("deps: ['#tag:task']", |code| TaskConfig::parse(code));
-        }
     }
 
     mod inputs {

nextgen/project-graph/tests/__fixtures__/expansion/tag-one/moon.yml

@@ -0,0 +1,5 @@
+tags: ['test']
+
+tasks:
+  test:
+    command: test

nextgen/project-graph/tests/__fixtures__/expansion/tag-three/moon.yml

@@ -0,0 +1,5 @@
+tags: ['test']
+
+tasks:
+  test:
+    command: test

nextgen/project-graph/tests/__fixtures__/expansion/tag-two/moon.yml

@@ -0,0 +1 @@
+tags: ['test']

nextgen/project-graph/tests/__fixtures__/expansion/tasks/moon.yml

@@ -20,3 +20,8 @@ tasks:
       - 'build'
     deps:
       - '^:build'
+
+  test-tags:
+    command: 'test'
+    deps:
+      - '#test:test'

nextgen/project-graph/tests/project_graph_test.rs

@@ -726,13 +726,26 @@ mod project_graph {
 
             assert_eq!(task.deps, [Target::parse("project:build").unwrap()]);
         }
+
+        #[tokio::test]
+        async fn expands_tag_deps_in_task() {
+            let graph = generate_project_graph("expansion").await;
+            let project = graph.get("tasks").unwrap();
+            let task = project.get_task("test-tags").unwrap();
+
+            assert_eq!(
+                task.deps,
+                [
+                    Target::parse("tag-three:test").unwrap(),
+                    Target::parse("tag-one:test").unwrap(),
+                ]
+            );
+        }
     }
 
     mod dependencies {
         use super::*;
 
-        // TODO #tag deps
-
         #[tokio::test]
         async fn lists_ids_of_dependencies() {
             let graph = generate_project_graph("dependencies").await;

website/docs/how-it-works/project-graph.mdx

@@ -73,6 +73,7 @@ integration.
   environments, and will sync as a production dependency.
 - **Development** - Dependency is required in development and production, _will be_ pruned from
   production environments, and will sync as a development-only dependency.
+- **Build** - Dependency is required for building only, and will sync as a build dependency.
 - **Peer** - Dependency is a peer requirement, with language specific semantics. Will sync as a peer
   dependency when applicable.