Update neovim config

dot_config/nvim/lua/empty_misc.lua

@@ -0,0 +1,25 @@
+-- Any copyright is dedicated to the Public Domain.
+--
+-- https://creativecommons.org/publicdomain/zero/1.0/
+
+function file_exists(file)
+  -- some error codes:
+  -- 13 : EACCES - Permission denied
+  -- 17 : EEXIST - File exists
+  -- 20	: ENOTDIR - Not a directory
+  -- 21	: EISDIR - Is a directory
+  --
+  local isok, errstr, errcode = os.rename(file, file)
+  if isok == nil then
+     if errcode == 13 then 
+        -- Permission denied, but it exists
+        return true
+     end
+     return false
+  end
+  return true
+end
+
+function dir_exists(path)
+  return file_exists(path .. "/")
+end

dot_config/nvim/lua/plugins.lua

@@ -24,9 +24,16 @@ require("lazy").setup({
     "jaawerth/fennel.vim",
     "Olical/conjure",
     "Olical/aniseed",
+    "neovim/nvim-lspconfig",
+    "williamboman/mason.nvim",
+    "williamboman/mason-lspconfig.nvim",
+    "mfussenegger/nvim-dap",
+    "nvim-neotest/nvim-nio",
+    { "rcarriga/nvim-dap-ui", requires = {"mfussenegger/nvim-dap", "nvim-neotest/nvim-nio"} },
     { "yorickpeterse/vim-paper", lazy = true },
     { "junegunn/fzf", name = "fzf", dir = "~/.fzf", build = "./install --all" },
     { "fatih/vim-go" },
+    { "nvim-treesitter/nvim-treesitter", build = ":TSUpdate" },
 })
 
 ------------------------------------------------------

dot_config/nvim/lua/settings.lua

@@ -1,6 +1,9 @@
 -- Any copyright is dedicated to the Public Domain.
 -- https://creativecommons.org/publicdomain/zero/1.0/
 
+require('misc')
+
+-- Status line is always shown
 vim.opt.laststatus = 2
 
 -- Show full tags when doing search completion
@@ -45,27 +48,28 @@ vim.opt.numberwidth = 3
 
 -- Allow hidden buffers
 vim.opt.hidden = true
-
-vim.opt.termguicolors = true
-
+
 -- Create backups
-vim.opt.backup = true
-vim.cmd([[
-    try
-        set backupdir=$HOME/.local/share/nvim/backups/
-        set directory=$HOME/.local/share/nvim/backups/
-    catch
-    endtry
-]])
+local backupdir = "/home/steveno/.local/share/nvim/backups"
+if dir_exists(backupdir) then
+    vim.opt.backup = true
+    vim.opt.backupdir = backupdir
+    vim.opt.directory = backupdir
+else
+    vim.print("ERROR: Failed to set backupdir to " .. backupdir)
+    return
+end
 
 -- color scheme
+vim.opt.termguicolors = true
 vim.cmd([[
     let &t_8f =  "\<Esc>[38:2;%lu;%lu;%lum"
     let &t_8b =  "\<Esc>[48:2;%lu;%lu;%lum"
     set t_Co=256
-    colorscheme paper
 ]])
 
+vim.cmd.colorscheme('paper')
+
 -- Python
 vim.g.python3_host_prog = "/usr/bin/python3"