Set up nix formatter and language server

dots/.config/nvim/after/plugin/conform.lua

@@ -15,6 +15,7 @@ require("conform").setup({
     html = { "prettierd", "prettier", stop_after_first = true },
     lua = { "stylua" }, -- configured in stylua.toml
     markdown = { "prettierd", "prettier", stop_after_first = true },
+    nix = { "nixfmt" },
     javascript = { "prettierd", "prettier", stop_after_first = true },
     javascriptreact = { "prettierd", "prettier", stop_after_first = true },
     json = { "prettierd", "prettier", stop_after_first = true },

dots/.config/nvim/after/plugin/lspconfig.lua

@@ -36,6 +36,7 @@ local servers = {
   },
   lua_ls = {},
   -- marksman = {},
+  nixd = {},
   pyright = {},
   -- tsserver = {},
   svelte = {