refactor: rename "server_configurations" => "configs" #3330

Problem:
The name `server_configurations` is extremely verbose and irritatingly
formal and dogmatic. This overlong name is a constant nuisance when
reading, writing, and coding.

It's also not even correct: these configurations are just as much
"client" configurations as they are "server" configurations.

Solution:
- Rename to a shorter name.
- Leave placeholder files for any old URLs that link to the old
  location.

1 files changed, 52 insertions, 0 deletions

diff --git a/lua/lspconfig/configs/hls.lua b/lua/lspconfig/configs/hls.lua
new file mode 100644
index 00000000..4390440d
--- /dev/null
+++ b/lua/lspconfig/configs/hls.lua
@@ -0,0 +1,52 @@
+local util = require 'lspconfig.util'
+
+return {
+  default_config = {
+    cmd = { 'haskell-language-server-wrapper', '--lsp' },
+    filetypes = { 'haskell', 'lhaskell' },
+    root_dir = util.root_pattern('hie.yaml', 'stack.yaml', 'cabal.project', '*.cabal', 'package.yaml'),
+    single_file_support = true,
+    settings = {
+      haskell = {
+        formattingProvider = 'ormolu',
+        cabalFormattingProvider = 'cabalfmt',
+      },
+    },
+    lspinfo = function(cfg)
+      local extra = {}
+      local function on_stdout(_, data, _)
+        local version = data[1]
+        table.insert(extra, 'version:   ' .. version)
+      end
+
+      local opts = {
+        cwd = cfg.cwd,
+        stdout_buffered = true,
+        on_stdout = on_stdout,
+      }
+      local chanid = vim.fn.jobstart({ cfg.cmd[1], '--version' }, opts)
+      vim.fn.jobwait { chanid }
+      return extra
+    end,
+  },
+
+  docs = {
+    description = [[
+https://github.com/haskell/haskell-language-server
+
+Haskell Language Server
+
+If you are using HLS 1.9.0.0, enable the language server to launch on Cabal files as well:
+
+```lua
+require('lspconfig')['hls'].setup{
+  filetypes = { 'haskell', 'lhaskell', 'cabal' },
+}
+```
+    ]],
+
+    default_config = {
+      root_dir = [[root_pattern("hie.yaml", "stack.yaml", "cabal.project", "*.cabal", "package.yaml")]],
+    },
+  },
+}