In my eternal journey to learn nvim and to use more the terminal, I would need to share the clipboard between the system and nvim itself.

To be able to do that on my Debian 12, with Wayland and KDE, I need to install the following package:

sudo apt install wl-clipboard

And then, using the + register in normal mode the keymap "+y will copy text to the clipboard. And "+p will paste text from the clipboard.

An example of nvim configuration in Lua to make it easier, using the leader key:

-- Yank into system clipboard
vim.keymap.set({'n', 'v'}, '<leader>y', '"+y') -- yank motion
vim.keymap.set({'n', 'v'}, '<leader>Y', '"+Y') -- yank line

-- Delete into system clipboard
vim.keymap.set({'n', 'v'}, '<leader>d', '"+d') -- delete motion
vim.keymap.set({'n', 'v'}, '<leader>D', '"+D') -- delete line

-- Paste from system clipboard
vim.keymap.set('n', '<leader>p', '"+p')  -- paste after cursor
vim.keymap.set('n', '<leader>P', '"+P')  -- paste before cursor