Improved instructions when rust installation is not found

docs/language_servers.md

@@ -69,7 +69,7 @@ ln -s `which pyls` /usr/local/bin/python-language-server
 ## Rust
 
 - Prerequisites:
-  - Rust
+  - [Rust](https://www.rust-lang.org/tools/install)
 
 Install language server, and create symbolic link to enable server in juCi++:
 

src/notebook.cpp

@@ -204,8 +204,11 @@ bool Notebook::open(const boost::filesystem::path &file_path_, Position position
           shown.emplace(language_id);
         }
         else if(language_id == "rust") {
-          Terminal::get().print("\e[33mWarning\e[m: could not find Rust language server.\n");
+          auto rust_installed = !filesystem::get_rust_sysroot_path().empty();
+          Terminal::get().print(std::string("\e[33mWarning\e[m: could not find Rust ") + (rust_installed ? "language server" : "installation") + ".\n");
           Terminal::get().print("For installation instructions please visit: https://gitlab.com/cppit/jucipp/-/blob/master/docs/language_servers.md#rust.\n");
+          if(!rust_installed)
+            Terminal::get().print("You will need to restart juCi++ after installing Rust.\n");
           shown.emplace(language_id);
         }
       }

src/window.cpp

@@ -442,8 +442,9 @@ void Window::set_menu_actions() {
   menu.add_action("file_new_project_rust", []() {
     auto sysroot = filesystem::get_rust_sysroot_path();
     if(sysroot.empty()) {
-      Terminal::get().print("\e[33mWarning\e[m: could not find Rust.\n");
+      Terminal::get().print("\e[33mWarning\e[m: could not find Rust installation.\n");
       Terminal::get().print("For installation instructions please visit: https://gitlab.com/cppit/jucipp/-/blob/master/docs/language_servers.md#rust.\n");
+      Terminal::get().print("You will need to restart juCi++ after installing Rust.\n");
       return;
     }
     boost::filesystem::path project_path = Dialog::new_folder(Project::get_preferably_directory_folder());