feat(lsp)!: don't auto-register LSP client capabilities

Use `:h vim.lsp.config` instead.

Author: mrcjkb

README.md

@@ -797,8 +797,12 @@ vim.g.rustaceanvim = {
 
 > [!TIP]
 >
-> `vim.g.rustaceanvim` can also be a function that returns
-> a table.
+> - `vim.g.rustaceanvim` can also be a function that returns
+>   a table.
+>
+> - You can also use `:h vim.lsp.config` to configure `vim.g.rustaceanvim.server`
+>   options.
+>   For example, `vim.lsp.config("*", {})` or `vim.lsp.config("rust-analyzer", {})`.
 
 ### Using `codelldb` for debugging
 

doc/rustaceanvim.txt

@@ -166,10 +166,10 @@ rustaceanvim.Opts                                            *rustaceanvim.Opts*
                                                   Plugin options.
         {server?}  (rustaceanvim.lsp.ClientOpts)
                                                   Language server client options.
-                                                  In Neovim >= 0.11 (nightly), these can also be set using |vim.lsp.config()| for "rust-analyzer".
+                                                  These can also be set using |vim.lsp.config()| for "rust-analyzer" or "*".
                                                   If both the `server` table and a `vim.lsp.config["rust-analyzer"]` are defined,
-                                                  the |vim.lsp.config()| settings are merged into the `server` table, taking precedence over
-                                                  existing settings.
+                                                  rustaceanvim merges |vim.lsp.config()| settings into the `server` table,
+                                                  giving them precedence over existing settings.
         {dap?}     (rustaceanvim.dap.Opts)
                                                   Debug adapter options
 

lua/rustaceanvim/config/init.lua

@@ -55,10 +55,10 @@ vim.g.rustaceanvim = vim.g.rustaceanvim
 ---@field tools? rustaceanvim.tools.Opts
 ---
 ---Language server client options.
----In Neovim >= 0.11 (nightly), these can also be set using |vim.lsp.config()| for "rust-analyzer".
+---These can also be set using |vim.lsp.config()| for "rust-analyzer" or "*".
 ---If both the `server` table and a `vim.lsp.config["rust-analyzer"]` are defined,
----the |vim.lsp.config()| settings are merged into the `server` table, taking precedence over
----existing settings.
+---rustaceanvim merges |vim.lsp.config()| settings into the `server` table,
+---giving them precedence over existing settings.
 ---@field server? rustaceanvim.lsp.ClientOpts
 ---
 ---Debug adapter options

lua/rustaceanvim/config/server.lua

@@ -40,15 +40,9 @@ function server.load_rust_analyzer_settings(_, opts)
 end
 
 ---@return lsp.ClientCapabilities
-local function make_rustaceanvim_capabilities()
+function server.create_client_capabilities()
   local capabilities = vim.lsp.protocol.make_client_capabilities()
 
-  if vim.fn.has('nvim-0.10.0') == 1 then
-    -- snippets
-    -- This will also be added if cmp_nvim_lsp is detected.
-    capabilities.textDocument.completion.completionItem.snippetSupport = true
-  end
-
   -- send actions with hover request
   capabilities.experimental = {
     hoverActions = true,
@@ -76,57 +70,12 @@ local function make_rustaceanvim_capabilities()
     table.insert(experimental_commands, 'rust-analyzer.debugSingle')
   end
 
+  ---@diagnostic disable-next-line: inject-field
   capabilities.experimental.commands = {
     commands = experimental_commands,
   }
 
   return capabilities
 end
 
----@param mod_name string
----@param callback fun(mod: table): lsp.ClientCapabilities
----@return lsp.ClientCapabilities
-local function mk_capabilities_if_available(mod_name, callback)
-  local available, mod = pcall(require, mod_name)
-  if available and type(mod) == 'table' then
-    local ok, capabilities = pcall(callback, mod)
-    if ok then
-      return capabilities
-    end
-  end
-  return {}
-end
-
----@return lsp.ClientCapabilities
-function server.create_client_capabilities()
-  local rs_capabilities = make_rustaceanvim_capabilities()
-  local blink_capabilities = mk_capabilities_if_available('blink.cmp', function(blink)
-    return blink.get_lsp_capabilities()
-  end)
-  local cmp_capabilities = mk_capabilities_if_available('cmp_nvim_lsp', function(cmp_nvim_lsp)
-    return cmp_nvim_lsp.default_capabilities()
-  end)
-  local selection_range_capabilities = mk_capabilities_if_available('lsp-selection-range', function(lsp_selection_range)
-    return lsp_selection_range.update_capabilities {}
-  end)
-  local folding_range_capabilities = mk_capabilities_if_available('ufo', function(_)
-    return {
-      textDocument = {
-        foldingRange = {
-          dynamicRegistration = false,
-          lineFoldingOnly = true,
-        },
-      },
-    }
-  end)
-  return vim.tbl_deep_extend(
-    'force',
-    rs_capabilities,
-    blink_capabilities,
-    cmp_capabilities,
-    selection_range_capabilities,
-    folding_range_capabilities
-  )
-end
-
 return server