My configuration[0] doesn't quite meet all of your requirements, but you might be able to get some ideas from it. If you delete my hacky and very opinionated color theme configuration, it's 418 lines.
- I use Neovim in the terminal, so that's where I configure the font (Hack Nerd Font Mono) [1], which I install via homebrew on macOS[2].
- LSP: Can't recommend mason.nvim and mason-lspconfig enough. Install LSP servers with mason.nvim, and then mason-lspconfig handles automatically configuring and enabling whatever you've installed.
- I'm using mini.icons[3]
- For the file browser, I highly recommend Oil.nvim[4], which I discovered from this video by TJ DeVries[5].
- I was using fzf-lua, but switched back to Telescope because it was a better fit for me personally (I missed C-k to automatically append a file glob to live_grep. I missed being able to toggle the previewer. I missed being able to hit Esc and move around the picker input box with Vim motions)
Might be misunderstanding "splits I can manage with the keyboard", but (Neo)vim is pretty configurable here! I actually just use the default keybindings of e.g.
- `C-w` then HJKL to move
- `C-w C-v` to open a side-by-side (vertical) split
- `C-w C-q` to close the current split
- `C-w C-o` to close other splits (make current split the only one)
- `[NUMBER] C-w C-w` to jump to the [NUMBER]th split.
- `C-w o` to jump back to the last split you were at
[0] https://github.com/wilkystyle/nvim
[1] https://www.nerdfonts.com/
[2] https://gist.github.com/davidteren/898f2dcccd42d9f8680ec69a3...
[3] https://github.com/wilkystyle/nvim/blob/db16245731dea45f0c58...