When launching against Jupyverse and moving the mouse to the top of the screen or trying to hover the file list, the application crashes immediately.
Python 3.10, for that matter.
2026-01-09 21:50:07 [critical ] Exception [fps._module]
╭──────────────────────── Traceback (most recent call last) ─────────────────────────╮
│ /home/yala/.local/lib/python3.10/site-packages/fps/_module.py:517 in │
│ _start_and_done │
│ │
│ 514 │ │ │ log.critical("Module failed while starting", path=self.path) │
│ 515 │ │
│ 516 │ async def _start_and_done(self) -> None: │
│ ❱ 517 │ │ await self.start() │
│ 518 │ │ if not self._started.is_set(): │
│ 519 │ │ │ self.done() │
│ 520 │
│ │
│ ╭──────────────────────────── locals ────────────────────────────╮ │
│ │ self = <txl_jpterm.main.JptermModule object at 0x7c9c4ee82710> │ │
│ ╰────────────────────────────────────────────────────────────────╯ │
│ │
│ /home/yala/.local/lib/python3.10/site-packages/txl_jpterm/main.py:70 in start │
│ │
│ 67 │ │ file_browser = await self.get(FileBrowser) │
│ 68 │ │ editors = await self.get(Editors) │
│ 69 │ │ file_browser.open_file_signal.connect(editors.on_open) │
│ ❱ 70 │ │ jpterm.start(launcher, file_browser) │
│ 71 │
│ │
│ ╭──────────────────────────────── locals ────────────────────────────────╮ │
│ │ editors = _Editors(id='editors') │ │
│ │ file_browser = DirectoryTree(id='browser-view', name='.') │ │
│ │ footer = Footer() │ │
│ │ header = Header() │ │
│ │ jpterm = Jpterm( │ │
│ │ │ title='Jpterm', │ │
│ │ │ classes={'-show-browser', '-dark-mode'}, │ │
│ │ │ pseudo_classes={'focus', 'dark'} │ │
│ │ ) │ │
│ │ launcher = _Launcher() │ │
│ │ main_area = MainArea(id='main-view') │ │
│ │ self = <txl_jpterm.main.JptermModule object at 0x7c9c4ee82710> │ │
│ ╰────────────────────────────────────────────────────────────────────────╯ │
│ │
│ /home/yala/.local/lib/python3.10/site-packages/txl_jpterm/main.py:35 in start │
│ │
│ 32 │ │ container = Container(file_browser, self.main_area) │
│ 33 │ │ self.mount(container) │
│ 34 │ │ self.mount(self.footer) │
│ ❱ 35 │ │ self.main_area.show(launcher, "Launcher", mount=False) │
│ 36 │ │
│ 37 │ def watch_show_browser(self, show_browser: bool) -> None: │
│ 38 │ │ self.set_class(show_browser, "-show-browser") │
│ │
│ ╭────────────────────────── locals ───────────────────────────╮ │
│ │ container = Container() │ │
│ │ file_browser = DirectoryTree(id='browser-view', name='.') │ │
│ │ launcher = _Launcher() │ │
│ │ self = Jpterm( │ │
│ │ │ title='Jpterm', │ │
│ │ │ classes={ │ │
│ │ │ │ '-show-browser', │ │
│ │ │ │ '-dark-mode' │ │
│ │ │ }, │ │
│ │ │ pseudo_classes={'focus', 'dark'} │ │
│ │ ) │ │
│ ╰─────────────────────────────────────────────────────────────╯ │
│ │
│ /home/yala/.local/lib/python3.10/site-packages/txl_jpterm/main_area.py:30 in show │
│ │
│ 27 │ │ │ tab = Tab(str(title)) │
│ 28 │ │ │ if self.tabs is None: │
│ 29 │ │ │ │ self.tabs = Tabs(tab) │
│ ❱ 30 │ │ │ │ self.mount(self.tabs) │
│ 31 │ │ │ │ self.mount(widget) │
│ 32 │ │ │ │ mount = False │
│ 33 │ │ │ else: │
│ │
│ ╭───────────── locals ──────────────╮ │
│ │ mount = False │ │
│ │ self = MainArea(id='main-view') │ │
│ │ tab = Tab(id='tab-1') │ │
│ │ title = 'Launcher' │ │
│ │ widget = _Launcher() │ │
│ ╰───────────────────────────────────╯ │
│ │
│ /home/yala/.local/lib/python3.10/site-packages/textual/widget.py:1406 in mount │
│ │
│ 1403 │ │ if self._closing or self._pruning: │
│ 1404 │ │ │ return AwaitMount(self, []) │
│ 1405 │ │ if not self.is_attached: │
│ ❱ 1406 │ │ │ raise MountError(f"Can't mount widget(s) before {self!r} is mou │
│ 1407 │ │ # Check for duplicate IDs in the incoming widgets │
│ 1408 │ │ ids_to_mount = [ │
│ 1409 │ │ │ widget_id for widget in widgets if (widget_id := widget.id) is │
│ │
│ ╭────────────── locals ──────────────╮ │
│ │ after = None │ │
│ │ before = None │ │
│ │ self = MainArea(id='main-view') │ │
│ │ widgets = (Tabs(),) │ │
│ ╰────────────────────────────────────╯ │
╰────────────────────────────────────────────────────────────────────────────────────╯
MountError: Can't mount widget(s) before MainArea(id='main-view') is mountedThis was installed following the instructions on https://davidbrochart.github.io/jpterm/usage/CLI/
What could be happening here?
When launching against Jupyverse and moving the mouse to the top of the screen or trying to hover the file list, the application crashes immediately.
Python 3.10, for that matter.
This was installed following the instructions on https://davidbrochart.github.io/jpterm/usage/CLI/
What could be happening here?