dotfiles/nix/home-manager/modules/packages/neovim.nix

{pkgs, ...}: {
  programs.nixneovim = {
    enable = true;
    defaultEditor = true;
    viAlias = true;
    vimAlias = true;
    extraLuaPreConfig = builtins.readFile ./neovim/pre.lua;
    extraConfigLua = builtins.readFile ./neovim/core.lua;
    colorscheme = "onedark";
    colorschemes = {
      onedark.enable = true;
    };
    plugins = {
      fugitive = {
        enable = true;
      };
      gitsigns = {
        enable = true;
      };
      lualine = {
        enable = true;
        # theme = "bubbles_theme"; # Currently doesn't work
        componentSeparators = {
          left = "";
          right = "";
        };
        sectionSeparators = {
          left = "";
          right = "";
        };
        sections = {
          lualine_a = ["mode" {separator = {left = "";};} {right_padding = 2;}];
          lualine_b = ["filename" "branch"];
          lualine_c = ["%="];
          lualine_x = [];
          lualine_y = ["filetype" "progress"];
          lualine_z = ["location" {separator = {right = "";};} {left_padding = 2;}];
        };
      };
      # luasnip = {
      #   enable = true;
      # };
      lsp-lines = {
        enable = true;
      };
      lspconfig = {
        enable = true;
        preConfig = ''
        '';
        servers = {
          bashls.enable = true;
          gopls.enable = true;
          jsonls.enable = true;
          pyright.enable = true; # In preference to attempting to use pylyzer
          nil.enable = true;
          rust-analyzer.enable = true;
          taplo.enable = true;
          terraform-ls.enable = true;
        };
      };
      lspkind = {
        enable = true;
        mode = "symbol";
      };
      mini = {
        enable = true;
        ai.enable = true;
        align.enable = true;
        animate.enable = true;
        comment.enable = true;
        completion.enable = true;
        indentscope.enable = true;
        jump.enable = true;
        jump2d = {
          enable = true;
          extraConfig = {
            mappings.start_jumping = "<leader>a";
          };
        };
        splitjoin.enable = true;
        surround.enable = true;
        tabline.enable = true;
      };
      nvim-cmp = {
        enable = true;
        formatting = {
          format = ''
            function(entry, vim_item)
              vim_item.kind = string.format("%s %s", kind_icons[vim_item.kind], vim_item.kind)
                vim_item.menu = ({
                buffer = "[Buffer]",
                nvim_lsp = "[LSP]",
                luasnip = "[LuaSnip]",
                nvim_lua = "[Lua]",
                latex_symbols = "[LaTeX]",
              })[entry.source.name]
              return vim_item
            end
          '';
        };
        mappingPresets = ["insert"];
        mapping = {
          "<CR>" = "cmp.mapping.confirm({ select = true})";
          "<C-Space>" = "cmp.mapping.complete()";
          "<Tab>" = {
            modes = ["i" "s" "c"];
            action = ''
                function(fallback)
                  local entry = cmp.get_selected_entry()
                  if not entry then
                      cmp.select_next_item({ behavior = cmp.SelectBehavior.Select })
                      cmp.confirm()
                  elseif entry then
                      cmp.confirm()
                  elseif luasnip.expandable() then
                      luasnip.expand()
                  elseif luasnip.expand_or_jumpable() then
                      luasnip.expand_or_jump()
                  elseif check_backspace() then
                      fallback()
                  else
                      fallback()
                  end
              end
            '';
          };
          "<S-Tab>" = {
            modes = ["i" "s" "c"];
            action = ''
                function(fallback)
                if cmp.visible() then
                  cmp.select_prev_item()
                elseif luasnip.jumpable(-1) then
                  luasnip.jump(-1)
                else
                  fallback()
                end
              end
            '';
          };
        };

        snippet = {
          luasnip.enable = false;
        };
        sources = {
          cmdline = {
            enable = true;
          };
          emoji.enable = true;
          fuzzy_path.enable = true;
          # luasnip.enable = true;
          nvim_lsp.enable = true;
          nvim_lsp_document_symbol.enable = true;
          nvim_lsp_signature_help.enable = true;
          treesitter.enable = true;
        };
        view = {
          entries = "custom";
        };
      };
      project-nvim = {
        enable = true;
      };
      telescope = {
        enable = true;
        extraLua = {
          post = builtins.readFile ./neovim/telescope.lua;
        };
      };
      treesitter = {
        enable = true;
        indent = true;
        folding = true;
        incrementalSelection = {
          enable = true;
        };
      };
      trouble = {
        enable = true;
      };
      ufo = {
        enable = true;
        extraLua.pre = ''
          require('ufo').setup({ provider_selector = function(bufnr, filetype, buftype)
            return {'treesitter', 'indent' }
          end
          })
        '';
      };
      undotree = {
        enable = true;
      };
      which-key = {
        enable = true;
        groups = {
          normal = {
            "<leader>f" = "Telescope - Find";
            "<leader>r" = "View registers";
            "<leader>p" = "Telescope - LSP";
          };
        };
      };
    };
    extraPlugins =
      (
        with pkgs.vimPlugins; [
          fuzzy-nvim
          nvim-ts-context-commentstring
          telescope-zf-native-nvim
          vim-ReplaceWithRegister
          vim-bbye
          vim-dispatch-neovim
          vim-expand-region
        ]
      )
      ++ (with pkgs.vimExtraPlugins; [
        rainbow-delimiters-nvim
        gitlinker-linrongbin16
        telescope-symbols-nvim
        overseer-nvim
        officer-nvim
        nvim-web-devicons
        lsp-signature-nvim
        nvim-rg
        nvim-biscuits
        telescope-egrepify-nvim
      ]);
    mappings = {
      normal = {
        "<leader>u" = {
          action = "vim.cmd.UndotreeToggle";
          desc = "Toggle undotree";
        };
        "<leader>h" = {
          action = "function() vim.api.nvim_command('wincmd h') end";
          desc = "Cursor - Window left";
        };
        "<leader>j" = {
          action = "function() vim.api.nvim_command('wincmd j') end";
          desc = "Cursor - Window down";
        };
        "<leader>k" = {
          action = "function() vim.api.nvim_command('wincmd k') end";
          desc = "Cursor - Window up";
        };
        "<leader>l" = {
          action = "function() vim.api.nvim_command('wincmd l') end";
          desc = "Cursor - Window right";
        };
        "<c-k>" = {
          action = "'<c-u>'";
        };
        "<c-j>" = {
          action = "'<c-d>'";
        };
        "<leader>n" = {
          action = "function() vim.api.nvim_command('nohl') end";
          desc = "nohl";
        };
        "<leader>t" = {
          action = "'<cmd>Telescope<cr>'";
          desc = "Open Telescope";
        };
      };
      visual = {
        "<c-k>" = {
          action = "'<c-u>'";
        };
        "<c-j>" = {
          action = "'<c-d>'";
        };
      };
    };
  };
}