nixpkgs/neovim: disable formatting on nil_ls

.config/nixpkgs/neovim/config/lua/user/lsp.lua

@@ -92,6 +92,14 @@ vim.lsp.config('ruby_lsp', {
 })
 vim.lsp.enable('ruby_lsp')
 
+vim.lsp.config('nil_ls', {
+  on_init = function(client)
+    -- disable formatting
+    client.server_capabilities.documentFormattingProvider = false
+    client.server_capabilities.documentRangeFormattingProvider = false
+  end,
+})
+
 vim.lsp.enable('nil_ls')
 
 vim.lsp.config('jdtls', {