wezterm/docs/config/lua/keyassignment/PasteFrom.md

PasteFrom(source)

Paste the specified clipboard to the current pane.

This is only really meaningful on X11 systems that have multiple clipboards.

Possible values for source are:

• Clipboard - paste from the system clipboard
• PrimarySelection - paste from the primary selection buffer

See also Paste.

local wezterm = require 'wezterm';
return {
  keys = {
    -- paste from the clipboard
    {key="V", mods="CTRL", action=wezterm.action{PasteFrom="Clipboard"}},

    -- paste from the primary selection
    {key="V", mods="CTRL", action=wezterm.action{PasteFrom="PrimarySelection"}},
  },
}