add json server and remove deprecated open_on_setup option

flake.nix

@@ -43,6 +43,7 @@
         prisma-engines # ditto for schema.prisma files
         nodePackages.prettier # ditto
         nodePackages.bash-language-server # bash lsp
+        nodePackages.vscode-json-languageserver # json lsp
         python310Packages.python-lsp-server # todo: is specifying 310 an issue?
         alejandra # nix formatter alternative
         statix # linter for nix

pwnvim/plugins/nvim-tree.lua

@@ -139,7 +139,6 @@ require 'nvim-tree'.setup {
   -- hijack netrw window on startup
   hijack_netrw = true,
   -- open the tree when running this setup function
-  open_on_setup = false,
   update_cwd = true,
   -- update_to_buf_dir = { enable = true, auto_open = true },
   update_focused_file = { enable = true, update_cwd = true },