run bun from cached path

reflex/utils/exec.py

@@ -18,7 +18,7 @@ from reflex import constants
 from reflex.config import environment, get_config
 from reflex.constants.base import LogLevel
 from reflex.utils import console, path_ops
-from reflex.utils.prerequisites import get_web_dir
+from reflex.utils.prerequisites import get_package_list, get_web_dir
 
 # For uvicorn windows bug fix (#2335)
 frontend_process = None
@@ -82,6 +82,13 @@ def run_process_and_launch_url(run_command: list[str], backend_present=True):
 
     json_file_path = get_web_dir() / constants.PackageJson.PATH
     last_hash = detect_package_change(json_file_path)
+    console.print(
+        f"DETECT_PACKAGE_CHANGE init {last_hash}, {json.dumps(json.loads(json_file_path.read_text()))}"
+    )
+    last_packages = get_package_list()
+    console.print(
+        f"DETECT_PACKAGE_CHANGE init {last_packages}",
+    )
     process = None
     first_run = True
 
@@ -114,7 +121,7 @@ def run_process_and_launch_url(run_command: list[str], backend_present=True):
                             notify_backend()
                         first_run = False
                     else:
-                        console.print("New packages detected: Updating app...")
+                        console.print(f"New packages detected: Updating app... {line}")
                 else:
                     if any(
                         x in line for x in ("bin executable does not exist on disk",)
@@ -126,10 +133,21 @@ def run_process_and_launch_url(run_command: list[str], backend_present=True):
                         )
                     new_hash = detect_package_change(json_file_path)
                     if new_hash != last_hash:
+                        new_content = json.dumps(json.loads(json_file_path.read_text()))
+                        console.print(
+                            f"DETECT_PACKAGE_CHANGE hit {last_hash} != {new_hash} (new), {new_content}"
+                        )
                         last_hash = new_hash
-                        kill(process.pid)
+                        new_packages = get_package_list()
-                        process = None
+                        if new_packages != last_packages:
-                        break  # for line in process.stdout
+                            console.print("Reloading app due to new content...")
+                            console.print(
+                                f"DETECT_PACKAGE_CHANGE init {new_packages}",
+                            )
+                            last_packages = new_packages
+                            kill(process.pid)
+                            process = None
+                            break  # for line in process.stdout
         if process is not None:
             break  # while True
 

reflex/utils/prerequisites.py

@@ -267,6 +267,30 @@ def windows_npm_escape_hatch() -> bool:
     return environment.REFLEX_USE_NPM.get()
 
 
+def get_package_list() -> str:
+    """Get the list of installed packages in the current environment.
+
+    Returns:
+        The list of user and framework installed packages.
+    """
+    package_manager = get_package_manager()
+    install_package_manager = get_install_package_manager()
+    if package_manager == install_package_manager:
+        # npm
+        cmd = [install_package_manager, "list"]
+    else:
+        # bun
+        cmd = [install_package_manager, "pm", "ls"]
+    return (
+        processes.new_process(
+            cmd,
+            cwd=get_web_dir(),
+        )
+        .stdout.read()
+        .strip()
+    )
+
+
 def get_app(reload: bool = False) -> ModuleType:
     """Get the app module based on the default config.