nix-config/home/nvim/init2.lua

-- colours
vim.cmd[[colorscheme tokyonight]]
vim.g.tokyonight_style = "night"
vim.g.tokyonight_italic_functions = true

-- status line
require('lualine').setup {
  options = {
    theme = 'tokyonight'
  }
}

-- lsp
require'lspconfig'.bashls.setup{}
require'lspconfig'.gopls.setup{}
require'lspconfig'.pyright.setup{}
require'lspconfig'.rls.setup{}
require'lspconfig'.rnix.setup{}
require'lspconfig'.solargraph.setup{}
require'lspconfig'.terraformls.setup{}
require'lspconfig'.tflint.setup{}
require'lspconfig'.yamlls.setup{}

-- treesitter
require('nvim-treesitter.configs').setup({
    ensure_installed = "all",

    highlight = {
        enable = true,
        custom_captures = {
            -- ["<capture group>"] = "<highlight group>",
            -- ["keyword"] = "TSString",
        },
    },

    indent = {
        enable = true
    },

    rainbow = {
      enable = true,
      extended_mode = true
    },
})

--folding
vim.api.nvim_exec([[
    set foldmethod=expr
    set foldlevel=20
    set nofoldenable
    set foldexpr=nvim_treesitter#foldexpr()
]], true)

-- trouble
require("trouble").setup {
  {
    position = "bottom", -- position of the list can be: bottom, top, left, right
    height = 10, -- height of the trouble list when position is top or bottom
    width = 50, -- width of the list when position is left or right
    icons = true, -- use devicons for filenames
    mode = "lsp_workspace_diagnostics", -- "lsp_workspace_diagnostics", "lsp_document_diagnostics", "quickfix", "lsp_references", "loclist"
    fold_open = "", -- icon used for open folds
    fold_closed = "", -- icon used for closed folds
    action_keys = { -- key mappings for actions in the trouble list
        -- map to {} to remove a mapping, for example:
        -- close = {},
        close = "q", -- close the list
        cancel = "<esc>", -- cancel the preview and get back to your last window / buffer / cursor
        refresh = "r", -- manually refresh
        jump = {"<cr>", "<tab>"}, -- jump to the diagnostic or open / close folds
        open_split = { "<c-x>" }, -- open buffer in new split
        open_vsplit = { "<c-v>" }, -- open buffer in new vsplit
        open_tab = { "<c-t>" }, -- open buffer in new tab
        jump_close = {"o"}, -- jump to the diagnostic and close the list
        toggle_mode = "m", -- toggle between "workspace" and "document" diagnostics mode
        toggle_preview = "P", -- toggle auto_preview
        hover = "K", -- opens a small popup with the full multiline message
        preview = "p", -- preview the diagnostic location
        close_folds = {"zM", "zm"}, -- close all folds
        open_folds = {"zR", "zr"}, -- open all folds
        toggle_fold = {"zA", "za"}, -- toggle fold of current file
        previous = "k", -- preview item
        next = "j" -- next item
    },
    indent_lines = true, -- add an indent guide below the fold icons
    auto_open = false, -- automatically open the list when you have diagnostics
    auto_close = false, -- automatically close the list when you have no diagnostics
    auto_preview = true, -- automatically preview the location of the diagnostic. <esc> to close preview and go back to last window
    auto_fold = false, -- automatically fold a file trouble list at creation
    signs = {
    -- icons / text used for a diagnostic
      error = "",
      warning = "",
      hint = "",
      information = "",
      other = "﫠"
    },
    use_lsp_diagnostic_signs = false -- enabling this will use the signs defined in your lsp client
  }
}

-- twilight
require("twilight").setup {
  dimming = {
    alpha = 0.25, -- amount of dimming
    -- we try to get the foreground from the highlight groups or fallback color
    color = { "Normal", "#cccccc" },
  },
  context = 10, -- amount of lines we will try to show around the current line
  expand = { -- for treesitter, we we always try to expand to the top-most ancestor with these types
    "function",
    "method",
    "table",
    "if_statement",
  },
  exclude = {}, -- exclude these filetypes
}
vim.cmd[[autocmd BufEnter * :TwilightEnable]]