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, 28 insertions, 0 deletions

diff --git a/lua/lspconfig/configs/rnix.lua b/lua/lspconfig/configs/rnix.lua
new file mode 100644
index 00000000..aa7f00ed
--- /dev/null
+++ b/lua/lspconfig/configs/rnix.lua
@@ -0,0 +1,28 @@
+local util = require 'lspconfig.util'
+
+return {
+  default_config = {
+    cmd = { 'rnix-lsp' },
+    filetypes = { 'nix' },
+    root_dir = function(fname)
+      return util.find_git_ancestor(fname) or vim.loop.os_homedir()
+    end,
+    settings = {},
+    init_options = {},
+  },
+  docs = {
+    description = [[
+https://github.com/nix-community/rnix-lsp
+
+A language server for Nix providing basic completion and formatting via nixpkgs-fmt.
+
+To install manually, run `cargo install rnix-lsp`. If you are using nix, rnix-lsp is in nixpkgs.
+
+This server accepts configuration via the `settings` key.
+
+    ]],
+    default_config = {
+      root_dir = "vim's starting directory",
+    },
+  },
+}