added better rust-analyzer support.

neovim/.config/nvim/lua/rust-tools-setup.lua

@@ -0,0 +1,85 @@
+local nvim_lsp = require'lspconfig'
+local opts = {
+	tools = {
+	autoSetHints = true,
+	hover_with_actions = true,
+
+	-- how to execute terminal commands
+	executor = require("rust-tools/executors").termopen,
+	inlay_hints = {
+		-- Only show inlay hints for the current line
+		only_current_line = false,
+		-- Event which triggers a refersh of the inlay hints.
+		only_current_line_autocmd = "CursorHold",
+		-- whether to show parameter hints with the inlay hints or not
+		show_parameter_hints = true,
+		-- whether to show variable name before type hints with the inlay hints or not
+		show_variable_name = false,
+		-- prefix for parameter hints
+		parameter_hints_prefix = "<- ",
+		-- prefix for all the other hints (type, chaining)
+		other_hints_prefix = "=> ",
+		-- whether to align to the lenght of the longest line in the file
+		max_len_align = false,
+		-- padding from the left if max_len_align is true
+		max_len_align_padding = 1,
+		-- whether to align to the extreme right or not
+		right_align = true,
+		-- padding from the right if right_align is true
+		right_align_padding = 7,
+		-- The color of the hints
+		highlight = "Comment",
+	},
+	hover_actions = {
+		-- the border that is used for the hover window
+		border = {
+			{ "╭", "FloatBorder" },
+			{ "─", "FloatBorder" },
+			{ "╮", "FloatBorder" },
+			{ "│", "FloatBorder" },
+			{ "╯", "FloatBorder" },
+			{ "─", "FloatBorder" },
+			{ "╰", "FloatBorder" },
+			{ "│", "FloatBorder" },
+		},
+		-- whether the hover action window gets automatically focused
+		auto_focus = false,
+	},
+	-- settings for showing the crate graph based on graphviz and the dot
+	-- command
+	crate_graph = {
+		-- Backend used for displaying the graph
+		backend = "x11",
+		-- where to store the output, nil for no output stored (relative
+		-- path from pwd)
+		output = nil,
+		-- true for all crates.io and external crates, false only the local
+		-- crates
+		full = true,
+	},
+},
+-- all the opts to send to nvim-lspconfig
+server = {
+	-- standalone file support
+	-- setting it to false may improve startup time
+	standalone = true,
+	settings = {
+		-- rust-analyer options
+		["rust-analyzer"] = {
+			-- enable clippy on save
+			checkOnSave = {
+				command = "clippy"
+			},
+		}
+	}
+},
+	-- debugging stuff
+	dap = {
+		adapter = {
+			type = "executable",
+			command = "lldb-vscode",
+			name = "rt_lldb",
+		},
+	},
+}
+require('rust-tools').setup(opts)