TUI crashes when trying to copy a message if you are running on a headless system with no clipboard

[jwilger]

First check

• [X] I added a descriptive title to this issue.
• [X] I used the GitHub search to try to find a similar issue and didn't find one.
• [X] I searched the Marvin documentation for this issue.

Bug summary

I have Marvin installed on a Linux system that is running headless. I am SSH'ed into that system. The TUI works great in most respects, but if you try to copy a message, the TUI crashes due to the lack of a clipboard provider. Instead, it should simply report an error to the user in a dialog without crashing.

Reproduction

1. Use `marvin chat` on a system with no clipboard provider running and generate some messages.

2. Try to copy a message via the "Copy" button in the TUI.

3. Marvin takes its toys and goes home.

Error

[05/17/23 07:03:06] INFO     marvin.marvin: Using OpenAI model "gpt-3.5-turbo"                                                                                         logging.py:50
07:03:06.793 | INFO    | marvin.marvin - [default on default]Using OpenAI model "gpt-3.5-turbo"[/]
                    WARNING  marvin: 404                                                                                                                                   cli.py:86
07:03:06.899 | WARNING | marvin - 404
╭─────────────────────────────────────────────────────────────────────── Traceback (most recent call last) ────────────────────────────────────────────────────────────────────────╮
│ /home/jwilger/.asdf/installs/python/3.11.2/lib/python3.11/site-packages/marvin/cli/tui.py:236 in on_button_pressed                                                               │
│                                                                                                                                                                                  │
│   233 │                                                                                                                                                                          │
│   234 │   def on_button_pressed(self, event: Button.Pressed):                                                                                                                    │
│   235 │   │   if event.button.id == "copy-message":                                                                                                                              │
│ ❱ 236 │   │   │   pyperclip.copy(self.message.content)                                                                                                                           │
│   237 │   │   │   self.action_toggle_buttons()                                                                                                                                   │
│   238 │   │                                                                                                                                                                      │
│   239 │   │   elif event.button.id == "delete-message":                                                                                                                          │
│                                                                                                                                                                                  │
│ ╭────────────────────────────────────────────────────────── locals ──────────────────────────────────────────────────────────╮                                                   │
│ │ event = Pressed()                                                                                                          │                                                   │
│ │  self = BotResponse(classes={'bot-response', 'response', 'show-edit-buttons'}, pseudo_classes={'focus-within', 'enabled'}) │                                                   │
│ ╰────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯                                                   │
│                                                                                                                                                                                  │
│ /home/jwilger/.asdf/installs/python/3.11.2/lib/python3.11/site-packages/pyperclip/__init__.py:659 in lazy_load_stub_copy                                                         │
│                                                                                                                                                                                  │
│   656 │   '''                                                                                                                                                                    │
│   657 │   global copy, paste                                                                                                                                                     │
│   658 │   copy, paste = determine_clipboard()                                                                                                                                    │
│ ❱ 659 │   return copy(text)                                                                                                                                                      │
│   660                                                                                                                                                                            │
│   661                                                                                                                                                                            │
│   662 def lazy_load_stub_paste():                                                                                                                                                │
│                                                                                                                                                                                  │
│ ╭────────────────────────────────────────────── locals ──────────────────────────────────────────────╮                                                                           │
│ │ text = 'Sure, here are the updated instructions:\n\nInstructions:\n\n1. When you start Pear,'+2149 │                                                                           │
│ ╰────────────────────────────────────────────────────────────────────────────────────────────────────╯                                                                           │
│                                                                                                                                                                                  │
│ /home/jwilger/.asdf/installs/python/3.11.2/lib/python3.11/site-packages/pyperclip/__init__.py:336 in __call__                                                                    │
│                                                                                                                                                                                  │
│   333 │   class ClipboardUnavailable(object):                                                                                                                                    │
│   334 │   │                                                                                                                                                                      │
│   335 │   │   def __call__(self, *args, **kwargs):                                                                                                                               │
│ ❱ 336 │   │   │   raise PyperclipException(EXCEPT_MSG)                                                                                                                           │
│   337 │   │                                                                                                                                                                      │
│   338 │   │   if PY2:                                                                                                                                                            │
│   339 │   │   │   def __nonzero__(self):                                                                                                                                         │
│                                                                                                                                                                                  │
│ ╭──────────────────────────────────────────────── locals ─────────────────────────────────────────────────╮                                                                      │
│ │   args = ('Sure, here are the updated instructions:\n\nInstructions:\n\n1. When you start Pear,'+2149,) │                                                                      │
│ │ kwargs = {}                                                                                             │                                                                      │
│ │   self = <pyperclip.init_no_clipboard.<locals>.ClipboardUnavailable object at 0x7f2a403c7010>           │                                                                      │
│ ╰─────────────────────────────────────────────────────────────────────────────────────────────────────────╯                                                                      │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
PyperclipException:
    Pyperclip could not find a copy/paste mechanism for your system.
    For more information, please visit https://pyperclip.readthedocs.io/en/latest/index.html#not-implemented-error

Versions

$ marvin version                                                                                                                                           [6:51:39]
[05/17/23 06:58:43] INFO     marvin.marvin: Using OpenAI model "gpt-3.5-turbo"                                                                                         logging.py:50
06:58:43.472 | INFO    | marvin.marvin - [default on default]Using OpenAI model "gpt-3.5-turbo"[/]
0.9.0

Additional context

No response