added which key plugin

nix/users/base/neovim/default.nix

@@ -87,6 +87,10 @@
         config = toLuaFile ./plugins/comment.lua;
       }
         
+      {
+        plugin = vimPlugins.which-key-nvim;
+        config = toLua ./plugins/whichkey.lua;
+      }
     ];
 
     extraLuaConfig = ''

nix/users/base/neovim/plugins/whichkey.lua

@@ -0,0 +1,95 @@
+local status, plugin = pcall(require,'which-key')
+if not status then
+    print('Error with plugin: ', plugin)
+    return
+end
+vim.o.timeout = true
+vim.o.timeoutlen = 1000
+plugin.setup({
+  plugins = {
+    marks = true, -- shows a list of your marks on ' and `
+    registers = true, -- shows your registers on " in NORMAL or <C-r> in INSERT mode
+    -- the presets plugin, adds help for a bunch of default keybindings in Neovim
+    -- No actual key bindings are created
+    spelling = {
+      enabled = true, -- enabling this will show WhichKey when pressing z= to select spelling suggestions
+      suggestions = 20, -- how many suggestions should be shown in the list?
+    },
+    presets = {
+      operators = true, -- adds help for operators like d, y, ...
+      motions = true, -- adds help for motions
+      text_objects = true, -- help for text objects triggered after entering an operator
+      windows = true, -- default bindings on <c-w>
+      nav = true, -- misc bindings to work with windows
+      z = true, -- bindings for folds, spelling and others prefixed with z
+      g = true, -- bindings for prefixed with g
+    },
+  },
+  -- add operators that will trigger motion and text object completion
+  -- to enable all native operators, set the preset / operators plugin above
+  operators = { gc = "Comments" },
+  key_labels = {
+    -- override the label used to display some keys. It doesn't effect WK in any other way.
+    -- For example:
+    -- ["<space>"] = "SPC",
+    -- ["<cr>"] = "RET",
+    -- ["<tab>"] = "TAB",
+  },
+  motions = {
+    count = true,
+  },
+  icons = {
+    breadcrumb = "»", -- symbol used in the command line area that shows your active key combo
+    separator = "➜", -- symbol used between a key and it's label
+    group = "+", -- symbol prepended to a group
+  },
+  popup_mappings = {
+    scroll_down = "<c-d>", -- binding to scroll down inside the popup
+    scroll_up = "<c-u>", -- binding to scroll up inside the popup
+  },
+  window = {
+    border = "none", -- none, single, double, shadow
+    position = "bottom", -- bottom, top
+    margin = { 1, 0, 1, 0 }, -- extra window margin [top, right, bottom, left]. When between 0 and 1, will be treated as a percentage of the screen size.
+    padding = { 1, 2, 1, 2 }, -- extra window padding [top, right, bottom, left]
+    winblend = 0, -- value between 0-100 0 for fully opaque and 100 for fully transparent
+    zindex = 1000, -- positive value to position WhichKey above other floating windows.
+  },
+  layout = {
+    height = { min = 4, max = 25 }, -- min and max height of the columns
+    width = { min = 20, max = 50 }, -- min and max width of the columns
+    spacing = 3, -- spacing between columns
+    align = "left", -- align columns left, center or right
+  },
+  ignore_missing = false, -- enable this to hide mappings for which you didn't specify a label
+  hidden = { "<silent>", "<cmd>", "<Cmd>", "<CR>", "^:", "^ ", "^call ", "^lua " }, -- hide mapping boilerplate
+  show_help = true, -- show a help message in the command line for using WhichKey
+  show_keys = true, -- show the currently pressed key and its label as a message in the command line
+  triggers = "auto", -- automatically setup triggers
+  -- triggers = {"<leader>"} -- or specifiy a list manually
+  -- list of triggers, where WhichKey should not wait for timeoutlen and show immediately
+  triggers_nowait = {
+    -- marks
+    "`",
+    "'",
+    "g`",
+    "g'",
+    -- registers
+    '"',
+    "<c-r>",
+    -- spelling
+    "z=",
+  },
+  triggers_blacklist = {
+    -- list of mode / prefixes that should never be hooked by WhichKey
+    -- this is mostly relevant for keymaps that start with a native binding
+    i = { "j", "k" },
+    v = { "j", "k" },
+  },
+  -- disable the WhichKey popup for certain buf types and file types.
+  -- Disabled by default for Telescope
+  disable = {
+    buftypes = {},
+    filetypes = {},
+  },
+})