chore: import nixos files

neovim/options.lua

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+-- termguicolors
+vim.opt.termguicolors = true
+
+-- line numbers
+vim.opt.number = true
+
+-- tabwidth
+vim.opt.tabstop = 4
+vim.opt.shiftwidth = 4
+
+-- indent with spaces
+vim.opt.expandtab = true
+
+-- scroll offset
+vim.opt.scrolloff = 4
+
+-- don't warp lines
+vim.opt.wrap = false
+
+-- split to right/below
+vim.opt.splitright = true
+vim.opt.splitbelow = true
+
+-- presistent undo
+vim.opt.undofile = true
+
+-- searching
+vim.opt.ignorecase = true
+vim.opt.smartcase = true
+
+-- preview commands
+vim.opt.inccommand = "split"
+
+-- completion
+vim.opt.completeopt = "menu,menuone,noselect"
+
+-- folding
+vim.opt.foldmethod = "expr"
+vim.opt.foldexpr = 'nvim_treesitter#foldexpr()'
+vim.opt.foldlevelstart = 99
+
+-- disable mouse
+vim.opt.mouse = ""
+
+-- set cursorline in active window
+vim.cmd([[
+    augroup CursorLine
+        autocmd!
+        autocmd VimEnter,WinEnter,BufWinEnter * setlocal cursorline
+        autocmd WinLeave * setlocal nocursorline
+    augroup END
+]])
+
+-- configure terminal
+vim.cmd([[
+    augroup terminal_setup
+        autocmd!
+        autocmd TermOpen * startinsert
+        autocmd TermOpen * setlocal nonumber norelativenumber
+    augroup END
+]])