neovim: Handle Mason breaking changes

neovim/ftplugin/rust.lua

@@ -0,0 +1,16 @@
+local bufnr = vim.api.nvim_get_current_buf()
+
+function rustLspMap(mode, keys, cmd)
+    vim.keymap.set(
+        mode,
+        keys,
+        function() vim.cmd.RustLsp(cmd) end,
+        { silent = true, buffer = bufnr }
+    )
+end
+
+-- Use rust-analyzer's grouping of actions
+rustLspMap("n", "gra", "codeAction")
+
+-- Use rustaceanvim's hover actions
+rustLspMap("n", "K", {'hover', 'actions'})