{ ... }:
{
  programs.nixvim = {
    opts = {
      tabstop = 4;
      shiftwidth = 4;
      softtabstop = 0;
      expandtab = true;
      smartindent = true;
    };
    plugins = {
      treesitter = {
        enable = true;
        settings = {
          auto_install = true;
          highlight = {
            additional_vim_regex_highlighting = true;
            custom_captures = { };
            enable = true;
          };
          indent.enable = false;
          folding = true;
          parser_install_dir = {
            __raw = "vim.fs.joinpath(vim.fn.stdpath('data'), 'treesitter')";
          };
        };
      };
      treesitter-context = {
        enable = true;
        settings = {
          line_numbers = true;
          max_lines = 0;
          min_window_height = 0;
          mode = "cursor";
          multiline_threshold = 5;
          separator = "-";
          trim_scope = "inner";
          zindex = 20;
        };
      };

      indent-blankline = {
        enable = true;
        settings = 
        {
          exclude = {
            buftypes = [
              "terminal"
                "quickfix"
            ];
            filetypes = [
              ""
                "checkhealth"
                "help"
                "lspinfo"
                "packer"
                "TelescopePrompt"
                "TelescopeResults"
                "yaml"
            ];
          };
          indent = {
            char = "│";
          };
          scope = {
            show_end = false;
            show_exact_scope = true;
            show_start = false;
          };
        };
      };
      lsp = {
        enable = true;
        servers = {
          gopls.enable = true;
          nixd.enable = true;
          lua-ls.enable = true;
          pylsp.enable = true;
          clangd = {
            enable = true;
            cmd = [
              "clangd"
                "--fallback-style=webkit"
            ];
          };
        };
        keymaps = {
          lspBuf = {
            gr = {
              action = "references";
              desc = "Go to references"; 
            };
            gi = { 
              action = "implementation";
              desc = "Go to implementation";
            };
            gt = {
              action = "type_definition";
              desc = "Go to type definition";
            };
          };
          extra = [
          {
            action = "<CMD>LspStop<Enter>";
            key = "<leader>lx";
            options = {
              desc = "Stop LSP";
            };
          }
          {
            action = "<CMD>LspStart<Enter>";
            key = "<leader>ls";
            options = {
              desc = "Start LSP";
            };
          }
          {
            action = "<CMD>LspRestart<Enter>";
            key = "<leader>lr";
            options = {
              desc = "Restart LSP";
            };
          }
          {
            action = "<CMD>Telescope lsp_definitions<Enter>";
            key = "gd";
            options = {
              desc = "Go to definitions";
            };
          }
          ];
        };
      };
      cmp = {
        enable = true;
        autoEnableSources = true;
        settings = {
          mapping = {
            "<C-Space>" = "cmp.mapping.complete()";
            "<C-d>" = "cmp.mapping.scroll_docs(-4)";
            "<C-e>" = "cmp.mapping.close()";
            "<C-f>" = "cmp.mapping.scroll_docs(4)";
            "<CR>" = "cmp.mapping.confirm({ select = true })";
            "<S-Tab>" = ''
              cmp.mapping(function (fallback)
                  local luasnip = require('luasnip')
                  if cmp.visible() then
                  cmp.select_prev_item()
                  elseif luasnip.jumpable(-1) then
                  luasnip.jump(-1)
                  else
                  fallback()
                  end
                  end, {'i', 's'})
              '';
            "<Tab>" = ''
              cmp.mapping(function (fallback)
                  local luasnip = require('luasnip')
                  if luasnip.expandable() then
                  luasnip.expand()
                  elseif cmp.visible() then
                  cmp.select_next_item()
                  elseif luasnip.jumpable(1) then
                  luasnip.jump(1)
                  else
                  fallback()
                  end
                  end, {'i', 's'})
              '';
          };

          sources =
            [ { name = "nvim_lsp"; } { name = "path"; } { name = "buffer"; } { name = "luasnip"; } ];
        };
      };
      cmp-nvim-lsp.enable = true;
      cmp-nvim-lsp-signature-help.enable = true;
      telescope = {
        enable = true;
      };

      luasnip.enable = true;
      friendly-snippets.enable = true;
    };
  };
}