Add lualine and evil theme (with lsp).

jrpotter/neovim/default.nix

@@ -9,6 +9,13 @@ let
     };
   };
 
+  lualine-nvim = {
+    plugin = pkgs.vimPlugins.lualine-nvim;
+    config = ''
+      require('init.evil')
+    '';
+  };
+
   nvim-cmp = {
     plugin = pkgs.vimPlugins.nvim-cmp;
     config = ''
@@ -78,6 +85,7 @@ in
           inherit (p) plugin;
           config = "lua << EOF\n${p.config}\nEOF";
         } else p) [
+        lualine-nvim
         nvim-cmp
         nvim-dap
         nvim-lspconfig
@@ -86,6 +94,7 @@ in
         pkgs.vimPlugins.cmp-nvim-lsp
         pkgs.vimPlugins.cmp_luasnip
         pkgs.vimPlugins.luasnip
+        pkgs.vimPlugins.nvim-web-devicons
       ];
       viAlias = true;
       vimAlias = true;

jrpotter/neovim/lua/init/evil.lua

@@ -0,0 +1,238 @@
+-- Original configuration:
+-- Author: shadmansaleh
+-- Credit: glepnir
+local lualine = require('lualine')
+
+-- Color table for highlights
+local colors = {
+  bg       = '#202328',
+  fg       = '#bbc2cf',
+  yellow   = '#ECBE7B',
+  cyan     = '#008080',
+  darkblue = '#081633',
+  green    = '#98be65',
+  orange   = '#FF8800',
+  violet   = '#a9a1e1',
+  magenta  = '#c678dd',
+  blue     = '#51afef',
+  red      = '#ec5f67',
+}
+
+local conditions = {
+  buffer_not_empty = function()
+    return vim.fn.empty(vim.fn.expand('%:t')) ~= 1
+  end,
+  hide_in_width = function()
+    return vim.fn.winwidth(0) > 80
+  end,
+  check_git_workspace = function()
+    local filepath = vim.fn.expand('%:p:h')
+    local gitdir = vim.fn.finddir('.git', filepath .. ';')
+    return gitdir and #gitdir > 0 and #gitdir < #filepath
+  end,
+}
+
+local config = {
+  options = {
+    -- Disable sections and component separators.
+    component_separators = '',
+    section_separators = '',
+    theme = {
+      -- We are going to use `lualine_c` an `lualine_x` as left and right
+      -- sections.
+      normal = { c = { fg = colors.fg, bg = colors.bg } },
+      inactive = { c = { fg = colors.fg, bg = colors.bg } },
+    },
+  },
+  sections = {
+    -- These are to remove the defaults.
+    lualine_a = {},
+    lualine_b = {},
+    lualine_y = {},
+    lualine_z = {},
+    -- These will be filled later.
+    lualine_c = {},
+    lualine_x = {},
+  },
+  inactive_sections = {
+    -- These are to remove the defaults.
+    lualine_a = {},
+    lualine_b = {},
+    lualine_y = {},
+    lualine_z = {},
+    lualine_c = {},
+    lualine_x = {},
+  },
+}
+
+-- Inserts a component in `lualine_c` at left section.
+local function ins_left(component)
+  table.insert(config.sections.lualine_c, component)
+end
+
+-- Inserts a component in `lualine_x` at right section.
+local function ins_right(component)
+  table.insert(config.sections.lualine_x, component)
+end
+
+-- Allow switching color based on the detected mode.
+local function fg_by_mode()
+  local mode_color = {
+    n = colors.blue,
+    i = colors.green,
+    v = colors.red,
+    [''] = colors.red,
+    V = colors.red,
+    c = colors.magenta,
+    no = colors.blue,
+    s = colors.orange,
+    S = colors.orange,
+    [''] = colors.orange,
+    ic = colors.yellow,
+    R = colors.violet,
+    Rv = colors.violet,
+    cv = colors.blue,
+    ce = colors.blue,
+    r = colors.cyan,
+    rm = colors.cyan,
+    ['r?'] = colors.cyan,
+    ['!'] = colors.blue,
+    t = colors.blue,
+  }
+  return { fg = mode_color[vim.fn.mode()] }
+end
+
+ins_left {
+  function()
+    return '▊'
+  end,
+  color = fg_by_mode,
+  padding = { left = 0 },
+}
+
+ins_left {
+  'filetype',
+  cond = conditions.buffer_not_empty,
+  icon_only = true,
+  colored = false,
+  color = fg_by_mode,
+  padding = { left = 1, right = 1 },
+}
+
+ins_left {
+  'filename',
+  cond = conditions.buffer_not_empty,
+  color = fg_by_mode,
+}
+
+ins_left {
+  'filesize',
+  cond = conditions.buffer_not_empty,
+}
+
+ins_left { '%c:%l/%L:%%%p', color = { fg = colors.fg, gui = 'bold' } }
+
+ins_left {
+  'diagnostics',
+  sources = { 'nvim_diagnostic' },
+  symbols = { error = ' ', warn = ' ', info = ' ' },
+  diagnostics_color = {
+    color_error = { fg = colors.red },
+    color_warn = { fg = colors.yellow },
+    color_info = { fg = colors.cyan },
+  },
+}
+
+-- Insert mid section. You can make any number of sections in neovim :)
+ins_left {
+  function()
+    return '%='
+  end,
+}
+
+-- Add first active LSP client.
+local function get_active_lsp()
+  local buf_ft = vim.api.nvim_buf_get_option(0, 'filetype')
+  local clients = vim.lsp.get_active_clients()
+  if next(clients) == nil then
+    return nil
+  end
+  for _, client in ipairs(clients) do
+    local filetypes = client.config.filetypes
+    if filetypes and vim.fn.index(filetypes, buf_ft) ~= -1 then
+      return client
+    end
+  end
+  return nil
+end
+
+ins_left {
+  function()
+    local lsp_name = get_active_lsp().name
+    local has_dap, dap = pcall(require, 'dap')
+    if has_dap and dap.status() ~= "" then
+      return string.format("%s:%s", lsp_name, dap.session().adapter.name)
+    else
+      return lsp_name
+    end
+  end,
+  icon = ' ',
+  color = { fg = '#ffffff', gui = 'bold' },
+  cond = function()
+    return get_active_lsp() ~= nil
+  end
+}
+
+ins_left {
+  function()
+    return require('dap').status()
+  end,
+  icon = '🪲',
+  color = { fg = '#DB7093', gui = 'bold' },
+  cond = function()
+    local has_dap, dap = pcall(require, 'dap')
+    return has_dap and dap.status() ~= ""
+  end,
+}
+
+-- Add components to right sections
+ins_right {
+  'o:encoding', -- option component same as &encoding in viml
+  fmt = string.upper, -- I'm not sure why it's upper case either ;)
+  cond = conditions.hide_in_width,
+  color = { fg = colors.green, gui = 'bold' },
+}
+
+ins_right {
+  'fileformat',
+  fmt = string.upper,
+  icons_enabled = false,
+  color = { fg = colors.green, gui = 'bold' },
+}
+
+ins_right {
+  'branch',
+  icon = '',
+  color = { fg = colors.violet, gui = 'bold' },
+}
+
+ins_right {
+  'diff',
+  symbols = { added = ' ', modified = '柳', removed = ' ' },
+  diff_color = {
+    added = { fg = colors.green },
+    modified = { fg = colors.orange },
+    removed = { fg = colors.red },
+  },
+  cond = conditions.hide_in_width,
+}
+
+ins_right {
+  function()
+    return '▊'
+  end,
+  color = fg_by_mode,
+  padding = { right = 0 },
+}
+
+lualine.setup(config)