feat: add --affected to turbo ls

crates/turborepo-lib/src/cli/mod.rs

@@ -494,6 +494,10 @@ pub enum Command {
     Config,
     /// EXPERIMENTAL: List packages in your monorepo.
     Ls {
+        /// Show only packages that are affected by changes between
+        /// the current branch and `main`
+        #[clap(long, group = "scope-filter-group")]
+        affected: bool,
         /// Use the given selector to specify package(s) to act as
         /// entry points. The syntax mirrors pnpm's syntax, and
         /// additional documentation and examples can be found in
@@ -1157,15 +1161,20 @@ pub async fn run(
             config::run(base).await?;
             Ok(0)
         }
-        Command::Ls { filter, packages } => {
+        Command::Ls {
+            affected,
+            filter,
+            packages,
+        } => {
             warn!("ls command is experimental and may change in the future");
             let event = CommandEventBuilder::new("info").with_parent(&root_telemetry);
 
             event.track_call();
+            let affected = *affected;
             let filter = filter.clone();
             let packages = packages.clone();
             let base = CommandBase::new(cli_args, repo_root, version, color_config);
-            ls::run(base, packages, event, filter).await?;
+            ls::run(base, packages, event, filter, affected).await?;
 
             Ok(0)
         }

crates/turborepo-lib/src/commands/ls.rs

@@ -42,6 +42,7 @@ pub async fn run(
     packages: Vec<String>,
     telemetry: CommandEventBuilder,
     filter: Vec<String>,
+    affected: bool,
 ) -> Result<(), cli::Error> {
     let signal = get_signal()?;
     let handler = SignalHandler::new(signal);
@@ -51,6 +52,7 @@ pub async fn run(
         run_args: Box::default(),
         execution_args: Box::new(ExecutionArgs {
             filter,
+            affected,
             ..Default::default()
         }),
     });
@@ -82,6 +84,9 @@ impl<'a> RepositoryDetails<'a> {
                 if !filtered_pkgs.contains(package_name) {
                     return None;
                 }
+                if matches!(package_name, PackageName::Root) {
+                    return None;
+                }
 
                 Some((package_name, package_info.package_path()))
             })
@@ -107,9 +112,6 @@ impl<'a> RepositoryDetails<'a> {
         }
 
         for (package_name, entry) in &self.packages {
-            if matches!(package_name, PackageName::Root) {
-                continue;
-            }
             println!("  {} {}", package_name, GREY.apply_to(entry));
         }
 

turborepo-tests/integration/tests/affected.t

@@ -25,6 +25,12 @@ Validate that we only run `my-app#build` with change not committed
     Time:\s*[\.0-9]+m?s  (re)
 
 
+Do the same thing with the `ls` command
+  $ ${TURBO} ls --affected
+   WARNING  ls command is experimental and may change in the future
+  1 package
+
+    my-app apps[\/\\]my-app (re)
 
 Commit the change
   $ git add .
@@ -47,6 +53,12 @@ Validate that we only run `my-app#build` with change committed
     Time:\s*[\.0-9]+m?s >>> FULL TURBO (re)
 
 
+Do the same thing with the `ls` command
+  $ ${TURBO} ls --affected
+   WARNING  ls command is experimental and may change in the future
+  1 package
+
+    my-app apps[\/\\]my-app (re)
 
 Override the SCM base to be HEAD, so nothing runs
   $ TURBO_SCM_BASE="HEAD" ${TURBO} run build --affected --log-order grouped
@@ -61,6 +73,13 @@ Override the SCM base to be HEAD, so nothing runs
     Time:\s*[\.0-9]+m?s  (re)
 
 
+Do the same thing with the `ls` command
+  $ TURBO_SCM_BASE="HEAD" ${TURBO} ls --affected
+   WARNING  ls command is experimental and may change in the future
+  0 packages
+
+
+
 Override the SCM head to be main, so nothing runs
   $ TURBO_SCM_HEAD="main" ${TURBO} run build --affected --log-order grouped
   \xe2\x80\xa2 Packages in scope:  (esc)
@@ -74,6 +93,13 @@ Override the SCM head to be main, so nothing runs
     Time:\s*[\.0-9]+m?s  (re)
 
 
+Do the same thing with the `ls` command
+  $ TURBO_SCM_HEAD="main" ${TURBO} ls --affected
+   WARNING  ls command is experimental and may change in the future
+  0 packages
+
+
+
 Now add a commit to `main` so the merge base is different from `main`
   $ git checkout main --quiet
   $ echo "foo" >> packages/util/index.js
@@ -98,7 +124,12 @@ Run the build and expect only `my-app` to be affected, since between
   Cached:    1 cached, 1 total
     Time:\s*[\.0-9]+m?s >>> FULL TURBO (re)
 
-
+Do the same thing with the `ls` command
+  $ ${TURBO} ls --affected
+   WARNING  ls command is experimental and may change in the future
+  1 package
+
+    my-app apps[\/\\]my-app (re)
 
 Now do some magic to change the repo to be shallow
   $ SHALLOW=$(git rev-parse --show-toplevel)/.git/shallow
@@ -131,3 +162,15 @@ Now try running `--affected` again, we should run all tasks
   Cached:    1 cached, 2 total
     Time:\s*[\.0-9]+m?s  (re)
 
+Do the same thing with the `ls` command
+  $ ${TURBO} ls --affected
+   WARNING  ls command is experimental and may change in the future
+   WARNING  unable to detect git range, assuming all files have changed: git error: fatal: main...HEAD: no merge base
+
+  3 packages
+
+    another packages[\/\\]another (re)
+    my-app apps[\/\\]my-app (re)
+    util packages[\/\\]util (re)
+
+