feat: add neovim config

configs/client.nix

@@ -3,6 +3,7 @@
     ./common.nix
 
     ../programs/rust.nix
+    ../programs/neovim
   ];
 
   environment.systemPackages = with pkgs; [

programs/neovim/default.nix

@@ -0,0 +1,10 @@
+{pkgs, ...}: {
+  environment.systemPackages = with pkgs; [
+    (lua5_1.withPackages (ps: with ps; [luarocks]))
+  ];
+
+  hm.programs.neovim = {
+    enable = true;
+    extraLuaConfig = builtins.readFile ./init.lua;
+  };
+}

programs/neovim/init.lua

@@ -0,0 +1,63 @@
+-- sets the <Leader> "key", which can be used in shortcuts
+vim.g.mapleader = ' '
+
+vim.g.have_nerd_font = true
+
+-- [[ vim options, see `:help vim.opt` ]]
+-- line numbers
+vim.opt.number = true
+
+-- enable mouse
+vim.opt.mouse = 'a'
+
+-- save undo history
+vim.opt.undofile = true
+
+-- case insensitive search, unless the terms contains uppercase or '\C'
+vim.opt.ignorecase = true
+vim.opt.smartcase = true
+
+-- save swapfile 250ms after nothing is done
+vim.opt.updatetime = 250
+
+-- timeout mapped sequences after 300ms
+vim.opt.timeoutlen = 300
+
+-- configure where splits open
+vim.opt.splitright = true
+vim.opt.splitbelow = true
+
+-- show whitespace characters clearly (see :help 'list')
+vim.opt.list = true
+
+-- preview substitutions (:s & :%s) while typing
+vim.opt.inccommand = 'split'
+
+-- highlight the line the cursor is on
+vim.opt.cursorline = true
+
+-- sync os clipboard and neovim
+vim.schedule(function()
+  vim.opt.clipboard = 'unnamedplus'
+end)
+
+
+-- [[ shortcuts, see `:help vim.keymap.set()` ]]
+-- hide search results when pressing esc
+vim.keymap.set('n', '<Esc>', '<cmd>nohlsearch<CR>')
+
+
+-- disable arrow keys in normal mode
+vim.keymap.set('n', '<left>', '<cmd>echo "Use h to move!!"<CR>')
+vim.keymap.set('n', '<right>', '<cmd>echo "Use l to move!!"<CR>')
+vim.keymap.set('n', '<up>', '<cmd>echo "Use k to move!!"<CR>')
+vim.keymap.set('n', '<down>', '<cmd>echo "Use j to move!!"<CR>')
+
+-- Keybinds to make split navigation easier.
+--  Use CTRL+<hjkl> to switch between windows
+--
+--  See `:help wincmd` for a list of all window commands
+vim.keymap.set('n', '<C-h>', '<C-w><C-h>', { desc = 'Move focus to the left window' })
+vim.keymap.set('n', '<C-l>', '<C-w><C-l>', { desc = 'Move focus to the right window' })
+vim.keymap.set('n', '<C-j>', '<C-w><C-j>', { desc = 'Move focus to the lower window' })
+vim.keymap.set('n', '<C-k>', '<C-w><C-k>', { desc = 'Move focus to the upper window' })