add lots of neovim config

home.nix

@@ -7,6 +7,7 @@
 
     packages = with pkgs; [
       keepassxc
+      nil
     ];
   };
 
@@ -19,7 +20,11 @@
       vimdiffAlias = true;
       defaultEditor = true;
       plugins = with pkgs.vimPlugins; [
-        mason-nvim
+        nvim-lspconfig
+        gruvbox-nvim
+        leap-nvim
+        telescope-nvim
+        vim-commentary
       ];
       extraLuaConfig = builtins.readFile ./neovim.lua;
     };

neovim.lua

@@ -1 +1,67 @@
-require("mason").setup()
+--[ GLOBAL ]--
+
+vim.o.background = "dark"
+vim.cmd([[colorscheme gruvbox]])
+vim.g.mapleader = ";"
+vim.o.signcolumn = "yes"
+vim.wo.number = true
+vim.wo.relativenumber = true
+vim.wo.cursorline = true
+
+--[ LSPCONFIG ]--
+
+local opts = { noremap=true, silent=true }
+local on_attach = function(client, bufnr)
+  vim.api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')
+  local bufopts = { noremap=true, silent=true, buffer=bufnr }
+  vim.keymap.set('n', '<leader>D', vim.lsp.buf.declaration, bufopts)
+  vim.keymap.set('n', '<leader>d', vim.lsp.buf.definition, bufopts)
+  vim.keymap.set('n', '<leader>h', vim.lsp.buf.hover, bufopts)
+  vim.keymap.set('n', '<leader>i', vim.lsp.buf.implementation, bufopts)
+  vim.keymap.set('n', '<leader>s', vim.lsp.buf.signature_help, bufopts)
+  vim.keymap.set('n', '<leader>rn', vim.lsp.buf.rename, bufopts)
+  vim.keymap.set('n', '<leader>c', vim.lsp.buf.code_action, bufopts)
+  vim.keymap.set('n', '<leader>fmt', function() vim.lsp.buf.format { async = true } end, bufopts)
+end
+
+require'lspconfig'.nil_ls.setup{ on_attach = on_attach }
+
+--[ LEAP ]--
+
+require('leap').add_default_mappings()
+-- Don't remap 'x' in visual mode.
+vim.keymap.del({'x', 'o'}, 'x')
+vim.keymap.del({'x', 'o'}, 'X')
+
+--[ TELESCOPE ]--
+
+local builtin = require('telescope.builtin')
+
+vim.keymap.set('n', '<leader>ff', builtin.find_files, {})
+vim.keymap.set('n', '<leader>fg', builtin.live_grep, {})
+vim.keymap.set('n', '<leader>fb', builtin.buffers, {})
+vim.keymap.set('n', '<leader>fr', builtin.lsp_references, {})
+vim.keymap.set('n', '<leader>fs', builtin.lsp_document_symbols, {})
+
+require('telescope').setup{
+  pickers = {
+    find_files = {
+      theme = "dropdown"
+    },
+    live_grep = {
+      theme = "dropdown"
+    },
+    buffers = {
+      theme = "dropdown"
+    },
+    lsp_references = {
+      theme = "dropdown"
+    },
+    lsp_document_symbols = {
+      theme = "dropdown"
+    }
+  }
+}
+
+--[ COMMENTARY ]--
+vim.cmd([[autocmd FileType nix setlocal commentstring=#\ %s]])