[Bug] Images not rendering with default floating window output

[vandalt]

• OS: Arch Linux (kernel 6.6.10-arch1-1)
• NeoVim Version: NVIM v0.9.5
• Python Version: 3.11.6
• Python is installed with: System Python
• Health checks

`:checkhealth molten`

``` molten-nvim ~ - OK NeoVim >=0.9 - OK Python >=3.10 - OK Python module pynvim found - OK Python module jupyter-client found - OK Python module cairosvg found - WARNING Optional python module pnglatex not found - ADVICE: - pip install pnglatex - OK Python module plotly found - OK Python module kaleido found - OK Python module pyperclip found - OK Python module nbformat found ```

`:checkhealth provider` (the python parts)

``` Python 3 provider (optional) ~ - `g:python3_host_prog` is not set. Searching for python3 in the environment. - Executable: /usr/bin/python3 - Python version: 3.11.6 - pynvim version: 0.5.0 - OK Latest pynvim is installed. Python virtualenv ~ - OK no $VIRTUAL_ENV ```

Description

When using the default floating windows to display outputs, images do not appear.

If I add plt.show() at the end the output simply changes for "Done". I also tried not using subplots, with and without an explicit plt.figure(), but none of those worked.

The issue is fairly similar to #92, although pyenv is not involved, so I tried the minimal config provided by @bpnordin and the issue persisted. I also tried some of the solutions proposed there (adding a new line below the sent snippet, entering the output, scrolling with <C-e> and <C-y>).

After exploring the docs a bit more, I tried some of the options in the notebook setup guide. Setting vim.g.molten_virt_text_output = true is the only way I found to display the image. Personally I'm happy with this fix, but I guess it does not address the root of the issue.

Minimal config from issue #92

```lua -- Example for configuring Neovim to load user-installed installed Lua rocks: package.path = package.path .. ";" .. vim.fn.expand("$HOME") .. "/.luarocks/share/lua/5.1/?/init.lua;" package.path = package.path .. ";" .. vim.fn.expand("$HOME") .. "/.luarocks/share/lua/5.1/?.lua;" local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim" if not vim.loop.fs_stat(lazypath) then vim.fn.system({ "git", "clone", "--filter=blob:none", "https://github.com/folke/lazy.nvim.git", "--branch=stable", -- latest stable release lazypath, }) end vim.opt.rtp:prepend(lazypath) -- install plugins local plugins = { { "folke/tokyonight.nvim",}, { "benlubas/molten-nvim", version = "^1.0.0", -- use version <2.0.0 to avoid breaking changes dependencies = { "3rd/image.nvim" }, build = ":UpdateRemotePlugins", init = function() -- these are examples, not defaults. Please see the readme vim.g.molten_image_provider = "image.nvim" vim.g.molten_output_win_max_height = 20 end, }, { "3rd/image.nvim", opts = { backend = "kitty", -- Kitty will provide the best experience, but you need a compatible terminal integrations = {}, -- do whatever you want with image.nvim's integrations max_width = 100, -- tweak to preference max_height = 12, -- ^ max_height_window_percentage = math.huge, -- this is necessary for a good experience max_width_window_percentage = math.huge, window_overlap_clear_enabled = true, window_overlap_clear_ft_ignore = { "cmp_menu", "cmp_docs", "" }, }, version = "1.1.0", }, { "nvim-treesitter/nvim-treesitter", build = ":TSUpdate", config = function() require("nvim-treesitter.configs").setup({ ensure_installed = { "markdown", "markdown_inline", }, }) end, }, } require("lazy").setup(plugins) vim.cmd.colorscheme("tokyonight") ```

Reproduction Steps

Running this snippet using the config above is enough to reproduce on my side. I was able to reproduce using the system Python (which is the one I use as neovim provider) as well as a virtual environment.

import matplotlib.pyplot as plt
fig, ax = plt.subplots()
ax.plot([1,2,3,4])

Pip freeze output of a simple venv I used to reproduce

``` annotated-types==0.6.0 asttokens==2.4.1 attrs==23.2.0 black==23.12.1 click==8.1.7 colorama==0.4.6 comm==0.2.1 contourpy==1.2.0 copier==9.1.0 cycler==0.12.1 debugpy==1.8.0 decorator==5.1.1 dunamai==1.19.0 executing==2.0.1 fastjsonschema==2.19.1 flake8==7.0.0 flake8-bugbear==23.12.2 fonttools==4.47.0 funcy==2.0 ipdb==0.13.13 ipykernel==6.28.0 ipython==8.19.0 isort==5.13.2 jedi==0.19.1 Jinja2==3.1.2 jinja2-ansible-filters==1.3.2 jsonschema==4.20.0 jsonschema-specifications==2023.12.1 jupyter_client==8.6.0 jupyter_core==5.7.0 jupytext==1.16.0 kiwisolver==1.4.5 markdown-it-py==3.0.0 MarkupSafe==2.1.3 matplotlib==3.8.2 matplotlib-inline==0.1.6 mccabe==0.7.0 mdit-py-plugins==0.4.0 mdurl==0.1.2 mypy-extensions==1.0.0 nbformat==5.9.2 nest-asyncio==1.5.8 numpy==1.26.3 packaging==23.2 parso==0.8.3 pathspec==0.12.1 pexpect==4.9.0 pillow==10.2.0 platformdirs==4.1.0 plumbum==1.8.2 prompt-toolkit==3.0.43 psutil==5.9.7 ptyprocess==0.7.0 pure-eval==0.2.2 pycodestyle==2.11.1 pydantic==2.5.3 pydantic_core==2.14.6 pyflakes==3.2.0 Pygments==2.17.2 pyparsing==3.1.1 PyQt5==5.15.10 PyQt5-Qt5==5.15.2 PyQt5-sip==12.13.0 python-dateutil==2.8.2 PyYAML==6.0.1 pyyaml-include==1.3.2 pyzmq==25.1.2 questionary==1.10.0 referencing==0.32.1 rpds-py==0.16.2 six==1.16.0 stack-data==0.6.3 toml==0.10.2 tornado==6.4 traitlets==5.14.1 typing_extensions==4.9.0 wcwidth==0.2.13 ```

P.S.: Thanks for the plugin, it's really nice to have this workflow available directly in Neovim :)

[benlubas]

I definitely broke something with the export changes.. apologies. I will take a look.

[benlubas]

Should be fixed, you can reopen if there's still an issue @vandalt

thanks for bringing this to my attention!