Merge branch 'dev' into gentoo

[nvim] feat: use nvim-lsp-installer

install lsp servers through plugins

!!! BREAKING: remove sumneko_lua submodule

config adapted in consequence

.config/nvim/lua/lsp/lua.lua

@@ -6,8 +6,10 @@
 local system_name = "Linux"
 
 -- set the path to the sumneko installation; if you previously installed via the now deprecated :LspInstall, use
-local sumneko_root_path = globals.lsp_path .. "/sumneko_lua"
-local sumneko_binary = sumneko_root_path.."/bin/"..system_name.."/lua-language-server"
+local sumneko_root_path = vim.fn.stdpath("data") ..
+        "/lsp_servers/sumneko_lua/extension/server"
+local sumneko_binary = sumneko_root_path .. "/bin/" .. system_name ..
+        "/lua-language-server"
 
 require'lspconfig'.sumneko_lua.setup {
         cmd = {sumneko_binary, "-E", sumneko_root_path .. "/main.lua"};

.config/nvim/lua/plugin/lsp_installer.lua

@@ -0,0 +1,47 @@
+-- Author        : swytch
+-- Created       : Saturday Sept. 11, 2021 22:12:33 CET
+-- License       : GPLv3
+-- Description   : nvim-lsp-installer plugin config file
+
+local lsp_installer = require("nvim-lsp-installer")
+
+lsp_installer.settings {
+    ui = {
+        icons = {
+            server_installed = "✓",
+            server_pending = "➜",
+            server_uninstalled = "✗"
+        }
+    }
+}
+
+local servers = {
+	"bashls",
+        "jedi_language_server",
+	"texlab",
+	"sumneko_lua",
+}
+
+for _, name in pairs(servers) do
+	local ok, server = lsp_installer.get_server(name)
+	-- Check that the server is supported in nvim-lsp-installer
+	if ok then
+		if not server:is_installed() then
+			print("Installing " .. name)
+			server:install()
+		end
+	end
+end
+
+lsp_installer.on_server_ready(function(server)
+    local opts = {}
+
+    -- (optional) Customize the options passed to the server
+    -- if server.name == "tsserver" then
+    --     opts.root_dir = function() ... end
+    -- end
+
+    -- This setup() function is exactly the same as lspconfig's setup function (:help lspconfig-quickstart)
+    server:setup(opts)
+    vim.cmd [[ do User LspAttachBuffers ]]
+end)

.config/nvim/lua/plugins.lua

@@ -48,6 +48,15 @@ return require("packer").startup(function()
         }
 
         -- LSP
+        use {
+                "williamboman/nvim-lsp-installer",
+                cmd = {
+                        "LspInstall",
+                        "LspInstallInfo"
+                },
+                config = function() require("plugin.lsp_installer").setup() end
+        }
+
         use {
                 "neovim/nvim-lspconfig",
                 ft = { "c", "cpp", "lua", "python", "tex"},

.local/share/nvim/lsp/sumneko_lua

@@ -1 +0,0 @@
-Subproject commit c876e0da1c0c2d01db9cb0c6f2914659318e0460