From e0e927edb1bd4fb9ef0ae81dd15387e743a44f78 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Torjus=20H=C3=A5kestad?= <torjus@usit.uio.no>
Date: Tue, 5 Mar 2024 22:49:06 +0100
Subject: [PATCH] Add lsp for .lua

---
 home/editor/neovim/default.nix |   1 +
 home/editor/neovim/plugins.lua | 108 +++++++++++++++++++++++----------
 2 files changed, 76 insertions(+), 33 deletions(-)

diff --git a/home/editor/neovim/default.nix b/home/editor/neovim/default.nix
index 6f1f28e..44c58be 100644
--- a/home/editor/neovim/default.nix
+++ b/home/editor/neovim/default.nix
@@ -51,6 +51,7 @@
     nodePackages.typescript-language-server
     nil
     yaml-language-server
+    lua-language-server
   ];
   home.sessionVariables.EDITOR = "nvim";
 }
diff --git a/home/editor/neovim/plugins.lua b/home/editor/neovim/plugins.lua
index 0bfc100..e1b4454 100644
--- a/home/editor/neovim/plugins.lua
+++ b/home/editor/neovim/plugins.lua
@@ -3,8 +3,9 @@
 -- LSP stuff
 local lsp_zero = require('lsp-zero')
 
+
 lsp_zero.on_attach(function(client, bufnr)
-	lsp_zero.default_keymaps({buffer = bufnr})
+	lsp_zero.default_keymaps({ buffer = bufnr })
 end)
 
 lsp_zero.format_on_save({
@@ -13,8 +14,9 @@ lsp_zero.format_on_save({
 		timeout_ms = 10000,
 	},
 	servers = {
-		['gopls'] = {'go'},
-		['nil_ls'] = {'nix'},
+		['gopls'] = { 'go' },
+		['nil_ls'] = { 'nix' },
+		['lua_ls'] = { 'lua' },
 	},
 })
 
@@ -42,6 +44,46 @@ lspconfig.nil_ls.setup({
 	},
 })
 
+lspconfig.lua_ls.setup({
+	on_init = function(client)
+		local path = client.workspace_folders[1].name
+		if vim.loop.fs_stat(path .. '/.luarc.json') or vim.loop.fs_stat(path .. '/.luarc.jsonc') then
+			return
+		end
+
+		client.config.settings.Lua = vim.tbl_deep_extend('force', client.config.settings.Lua, {
+			runtime = {
+				-- Tell the language server which version of Lua you're using
+				-- (most likely LuaJIT in the case of Neovim)
+				version = 'LuaJIT'
+			},
+			-- Make the server aware of Neovim runtime files
+			workspace = {
+				checkThirdParty = false,
+				library = {
+					vim.env.VIMRUNTIME
+					-- Depending on the usage, you might want to add additional paths here.
+					-- "${3rd}/luv/library"
+					-- "${3rd}/busted/library",
+				}
+				-- or pull in all of 'runtimepath'. NOTE: this is a lot slower
+				-- library = vim.api.nvim_get_runtime_file("", true)
+			}
+		})
+	end,
+	settings = {
+		Lua = {
+			format = {
+				enable = true,
+				defaultConfig = {
+					indent_style = "space",
+					indent_size = "2",
+				}
+			}
+		}
+	}
+})
+
 
 -- Telescope
 require('telescope').setup({
@@ -57,35 +99,35 @@ require('telescope').setup({
 
 -- Tresitter stuff
 require('nvim-treesitter.configs').setup {
-    ensure_installed = {},
-    auto_install = false,
-    highlight = { enable = true },
-    indent = { enable = true},
+	ensure_installed = {},
+	auto_install = false,
+	highlight = { enable = true },
+	indent = { enable = true },
 
-    incremental_selection = {
-        enable = true,
-        keymaps = {
-            init_selection = '<c-space>',
-            node_incremental = '<c-space>',
-            scope_incremental = '<c-s>',
-            node_decremental = '<M-space>',
-        },
-    },
-    textobjects = {
-        select = {
-            enable = true,
-            lookahead = true,
+	incremental_selection = {
+		enable = true,
+		keymaps = {
+			init_selection = '<c-space>',
+			node_incremental = '<c-space>',
+			scope_incremental = '<c-s>',
+			node_decremental = '<M-space>',
+		},
+	},
+	textobjects = {
+		select = {
+			enable = true,
+			lookahead = true,
 
-            keymaps = {
-                ['aa'] = '@parameter.outer',
-                ['ia'] = '@parameter.inner',
-                ['af'] = '@function.outer',
-                ['if'] = '@function.inner',
-                ['ac'] = '@class.outer',
-                ['ic'] = '@class.inner',
-            }
-        }
-    }
+			keymaps = {
+				['aa'] = '@parameter.outer',
+				['ia'] = '@parameter.inner',
+				['af'] = '@function.outer',
+				['if'] = '@function.inner',
+				['ac'] = '@class.outer',
+				['ic'] = '@class.inner',
+			}
+		}
+	}
 }
 
 -- Lualine
@@ -115,7 +157,7 @@ require('lualine').setup({
 				}
 			}
 		},
-		lualine_x = {'encoding', 'fileformat', 'filetype'},
+		lualine_x = { 'encoding', 'fileformat', 'filetype' },
 		lualine_y = { 'progress' },
 		lualine_z = { 'location' }
 	}
@@ -124,7 +166,7 @@ require('lualine').setup({
 -- Copilot
 require('copilot').setup({
 	suggestions = { enabled = false },
-	panel = { enabled = false},
+	panel = { enabled = false },
 })
 require('copilot_cmp').setup()
 
@@ -140,7 +182,7 @@ cmp.setup({
 	},
 	mapping = cmp.mapping.preset.insert({
 		-- Enter to confirm completion
-		['<CR>'] = cmp.mapping.confirm({select = false}),
+		['<CR>'] = cmp.mapping.confirm({ select = false }),
 		-- Ctrl+Space to open completion menu
 		['<C-Space>'] = cmp.mapping.complete(),
 		-- Move between snippet placeholders