Fix omnisharp lsp and remove deprecated options in plugins

README.md

@@ -23,6 +23,12 @@ Unity versions are extremely appreciated!
 First of all make sure that you have installed **Neovim >= 0.8.0**. You can do
 that by following this [guide][neovim_installation].
 
+For C# Language Server Protocol (LSP) support, **[omnisharp-roslyn](https://github.com/OmniSharp/omnisharp-roslyn)** is used.
+Omnisharp is built using **[Mono](https://www.mono-project.com/)** on OSX/Linux therefore **Mono >= 6.4**
+has to be globally installed. Mono can be officially installed from here:
+
+**[Mono installation guide](https://www.mono-project.com/download/stable/#download-lin)**
+
 The below dependencies should be properly installed, please take a look at
 respective links for an up-to-date installation instructions.
 
@@ -70,7 +76,7 @@ Some plugins require external tools to be installed.
 For a start, make sure the latest versions of these are installed:
 
 1. Git
-2. NPM
+2. (optional) NPM
 
 Type `:checkhealth` in a Neovim instance to check for missing dependencies.
 Plugins with missing dependencies should be clearly identified and a simple

after/plugin/indent_blankline.lua

@@ -1,10 +1,6 @@
-local status_ok, indent_blankline = pcall(require, 'indent_blankline')
+local status_ok, indent_blankline = pcall(require, 'ibl')
 if not status_ok then
     print('Plugin not loaded: ', 'indent_blankline')
     return
 end
-indent_blankline.setup {
-    -- for example, context is off by default, use this to turn it on
-    show_current_context = false,
-    show_current_context_start = true,
-}
+indent_blankline.setup {}

after/plugin/lsp_related/lspconfig.lua

@@ -48,7 +48,7 @@ mason.setup {
 }
 -- Add your language server(s) here
 local servers = {}
---------------------------------- ADD LINTERS AND FORMATTERS HERE -------------------------------------------
+------------------------------------- ADD LINTERS AND FORMATTERS HERE ---------------------------------------
 local linters_and_formatters = {
     'black',
     'ruff',
@@ -57,7 +57,7 @@ local linters_and_formatters = {
     'markdownlint',
 }
 -------------------------------------------------------------------------------------------------------------
-------------------------------------- ADD YOUR DEBUGGER(S) HERE ---------------------------------------------
+----------------------------------------- ADD YOUR DEBUGGER(S) HERE -----------------------------------------
 local debuggers = {
     'debugpy',
 }
@@ -94,10 +94,13 @@ local default_config = { -- Default config for all language servers
     on_attach = on_attach,
     capabilities = capabilities,
 }
--------------------------------- ADD YOUR LANGUAGE SERVER(S) HERE -------------------------------------------
+------------------------------------- ADD YOUR LANGUAGE SERVER(S) HERE --------------------------------------
 -- Replace with your own path to Omnisharp executable
-local omnisharp_executable = "omnisharp";
-servers['omnisharp'] = { -- Configuration for omnisharp
+-- On OSX/Linux, use omnisharp-mono and make sure Mono >= 6.4.0 is installed
+-- On Windows, use omnisharp and make sure .NET SDK >= 6.0 is installed
+-- Read README at official omnisharp repo: https://github.com/OmniSharp/omnisharp-roslyn
+local omnisharp_executable = "omnisharp-mono";
+servers['omnisharp_mono'] = { -- Configuration for omnisharp
     on_attach = on_attach,
     capabilities = capabilities,
     handlers = {
@@ -138,7 +141,6 @@ servers['tsserver'] = default_config
 -- Ensure installed servers
 local ensure_installed = {}
 for lsp, _ in pairs(servers) do
-    -- we want omnisharp-mono installed not omnisharp
     table.insert(ensure_installed, lsp)
 end
 for _, linter_or_formatter in pairs(linters_and_formatters) do -- Ensure linters and formatters are installed

after/plugin/nvim_tree.lua

@@ -21,7 +21,6 @@ nvim_tree.setup { -- BEGIN_DEFAULT_OPTS
         cursorline = true,
         debounce_delay = 15,
         width = 30,
-        hide_root_folder = false,
         side = "right",
         preserve_window_proportions = false,
         number = false,