uv and reflex

[ronnyascencio]

Summary

SUMMARY_SENTENCE_HERE

Steps to trigger the problem:

1. uv init (project name)
   2.cd project name
   3.uv add reflex
   4.uv run reflex init
2. uv run reflex run

Actual Behavior:
error

rascencio@ronny-ascencio:~/Dev$ uv init portfolio
Initialized project `portfolio` at `/home/rascencio/Dev/portfolio`
rascencio@ronny-ascencio:~/Dev$ uv add reflex
error: No `pyproject.toml` found in current directory or any parent directory
rascencio@ronny-ascencio:~/Dev$ cd portfolio
rascencio@ronny-ascencio:~/Dev/portfolio$ uv add reflex
Using CPython 3.13.2
Creating virtual environment at: .venv
Resolved 75 packages in 27ms
Installed 72 packages in 18ms
 + alembic==1.14.1
 + annotated-types==0.7.0
 + anyio==4.8.0
 + bidict==0.23.1
 + build==1.2.2.post1
 + certifi==2025.1.31
 + cffi==1.17.1
 + charset-normalizer==3.4.1
 + click==8.1.8
 + cryptography==44.0.2
 + distro==1.9.0
 + docutils==0.21.2
 + fastapi==0.115.11
 + greenlet==3.1.1
 + gunicorn==23.0.0
 + h11==0.14.0
 + httpcore==1.0.7
 + httpx==0.28.1
 + id==1.5.0
 + idna==3.10
 + jaraco-classes==3.4.0
 + jaraco-context==6.0.1
 + jaraco-functools==4.1.0
 + jeepney==0.9.0
 + jinja2==3.1.5
 + keyring==25.6.0
 + lazy-loader==0.4
 + mako==1.3.9
 + markdown-it-py==3.0.0
 + markupsafe==3.0.2
 + mdurl==0.1.2
 + more-itertools==10.6.0
 + nh3==0.2.21
 + packaging==24.2
 + platformdirs==4.3.6
 + psutil==6.1.1
 + pycparser==2.22
 + pydantic==2.10.6
 + pydantic-core==2.27.2
 + pygments==2.19.1
 + pyproject-hooks==1.2.0
 + python-engineio==4.11.2
 + python-multipart==0.0.20
 + python-socketio==5.12.1
 + pyyaml==6.0.2
 + readme-renderer==44.0
 + redis==5.2.1
 + reflex==0.7.1
 + reflex-hosting-cli==0.1.35
 + requests==2.32.3
 + requests-toolbelt==1.0.0
 + rfc3986==2.0.0
 + rich==13.9.4
 + secretstorage==3.3.3
 + setuptools==75.8.2
 + shellingham==1.5.4
 + simple-websocket==1.1.0
 + sniffio==1.3.1
 + sqlalchemy==2.0.38
 + sqlmodel==0.0.23
 + starlette==0.46.0
 + starlette-admin==0.14.1
 + tabulate==0.9.0
 + tomlkit==0.13.2
 + twine==6.1.0
 + typer==0.15.2
 + typing-extensions==4.12.2
 + urllib3==2.3.0
 + uvicorn==0.34.0
 + wheel==0.45.1
 + wrapt==1.17.2
 + wsproto==1.2.0
rascencio@ronny-ascencio:~/Dev/portfolio$ uv run reflex init
Info: Overriding config value loglevel with env var LOGLEVEL=default
───────────────────────────────────────────────────────────────────────────── Initializing portfolio ─────────────────────────────────────────────────────────────────────────────
Info: Using custom Bun path: /home/rascencio/snap/code/184/.local/share/reflex/bun/bin/bun
[15:49:40] Initializing the web directory.                                                                                                                          console.py:164

Get started with a template:
(0) blank (https://blank-template.reflex.run) - A blank Reflex app.
(1) ai - Generate a template using AI [Experimental]
(2) choose templates - Choose an existing template.
Which template would you like to use? (0): 0
[15:49:44] Initializing the app directory.                                                                                                                          console.py:164
Success: Initialized portfolio using the blank template
rascencio@ronny-ascencio:~/Dev/portfolio$ uv run reflex run
Info: Overriding config value loglevel with env var LOGLEVEL=default
Info: Overriding config value frontend_port with env var FRONTEND_PORT=3000
Info: Overriding config value backend_port with env var BACKEND_PORT=8000
────────────────────────────────────────────────────────────────────────────── Starting Reflex App ───────────────────────────────────────────────────────────────────────────────
[15:50:01] Compiling: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 100% 16/16 0:00:00
Traceback (most recent call last):
  File "/home/rascencio/Dev/portfolio/.venv/bin/reflex", line 10, in <module>
    sys.exit(cli())
             ~~~^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/typer/main.py", line 339, in __call__
    raise e
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/typer/main.py", line 322, in __call__
    return get_command(self)(*args, **kwargs)
           ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/click/core.py", line 1161, in __call__
    return self.main(*args, **kwargs)
           ~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/typer/core.py", line 740, in main
    return _main(
        self,
    ...<6 lines>...
        **extra,
    )
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/typer/core.py", line 195, in _main
    rv = self.invoke(ctx)
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/click/core.py", line 1697, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
                           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/click/core.py", line 1443, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/click/core.py", line 788, in invoke
    return __callback(*args, **kwargs)
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/typer/main.py", line 697, in wrapper
    return callback(**use_params)
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/reflex/reflex.py", line 300, in run
    _run(env, frontend, backend, frontend_port, backend_port, backend_host, loglevel)
    ~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/reflex/reflex.py", line 195, in _run
    prerequisites.get_compiled_app()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/reflex/utils/prerequisites.py", line 387, in get_compiled_app
    app._compile(export=export)
    ~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/reflex/app.py", line 1347, in _compile
    self._get_frontend_packages(all_imports)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/reflex/app.py", line 931, in _get_frontend_packages
    prerequisites.install_frontend_packages(page_imports, get_config())
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/reflex/utils/prerequisites.py", line 1149, in _inner
    func(*args, **kwargs)
    ~~~~^^^^^^^^^^^^^^^^^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/reflex/utils/prerequisites.py", line 1202, in install_frontend_packages
    processes.run_process_with_fallback(
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        [install_package_manager, "install"],
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<4 lines>...
        shell=constants.IS_WINDOWS,
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/reflex/utils/processes.py", line 400, in run_process_with_fallback
    process = new_process(get_command_with_loglevel(args), **kwargs)
  File "/home/rascencio/Dev/portfolio/.venv/lib/python3.13/site-packages/reflex/utils/processes.py", line 200, in new_process
    return fn(args, **kwargs)  # pyright: ignore [reportCallIssue, reportArgumentType]
  File "/home/rascencio/.local/share/uv/python/cpython-3.13.2-linux-x86_64-gnu/lib/python3.13/subprocess.py", line 1038, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
    ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                        pass_fds, cwd, env,
                        ^^^^^^^^^^^^^^^^^^^
    ...<5 lines>...
                        gid, gids, uid, umask,
                        ^^^^^^^^^^^^^^^^^^^^^^
                        start_new_session, process_group)
                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/rascencio/.local/share/uv/python/cpython-3.13.2-linux-x86_64-gnu/lib/python3.13/subprocess.py", line 1974, in _execute_child
    raise child_exception_type(errno_num, err_msg, err_filename)
FileNotFoundError: [Errno 2] No such file or directory: '/home/rascencio/.local/share/reflex/bun/bin/bun'
rascencio@ronny-ascencio:~/Dev/portfolio$

Expected Behavior:

(ronny-ascencio-portfolio) rascencio@ronny-ascencio:~/Dev/ronny-ascencio-portfolio$ uv run reflex run
Info: Overriding config value loglevel with env var LOGLEVEL=default
Info: Overriding config value frontend_port with env var FRONTEND_PORT=3000
Info: Overriding config value backend_port with env var BACKEND_PORT=8000
─────────────────────────────────────────────────────────────────────────────────── Starting Reflex App ────────────────────────────────────────────────────────────────────────────────────
[16:15:39] Compiling: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 100% 16/16 0:00:00
─────────────────────────────────────────────────────────────────────────────────────── App Running ────────────────────────────────────────────────────────────────────────────────────────
Info: Overriding config value loglevel with env var LOGLEVEL=default
Info: Overriding config value frontend_port with env var FRONTEND_PORT=3000
Info: Overriding config value backend_port with env var BACKEND_PORT=8000
App running at: http://localhost:3000
Backend running at: http://0.0.0.0:8000
[16:15:48] Compiling: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 100% 16/16 0:00:00

Zed Version and System Specs

Zed: v0.176.1 (Zed)
OS: Linux X11 ubuntu 24.04
Memory: 31.1 GiB
Architecture: x86_64
GPU: Intel(R) UHD Graphics (CML GT2) || Intel open-source Mesa driver || Mesa 24.2.8-1ubuntu1~24.04.1

[devzeth]

I've talked with the user on discord in this thread

Summary:
The same error zed gives in its terminal he also gets in his standalone terminal, so nothing really specific to zed, however VScode works. So I'm thinking vscode does some path shenanigans and it works?
The issue is that reflex can't find the bun executable. We did which bun and found it installed at:
/home/rascencio/snap/code/184/.local/share/reflex/bun/bin/bun while reflex is looking in /home/rascencio/.local/share/reflex/bun/bin/bun.

I know this is not really a Zed issue but we are still surprised why vscode can run this, and zed cannot and yes the normal terminal is also not running it.

We need here feedback from the Zed team, to see if we are missing something if not it can be closed.

[devzeth]

User reinstalled bun via the official way and it's working fine now. Closing issue.