Add fjordlauncher

overlay.nix

@@ -1,8 +1,11 @@
 final: prev:
 let
   table = final.callPackage ./table.nix { };
-in {
+in rec {
   requireFile = { ... }@args: let
     hash = args.hash or args.sha256 or args.sha1;
   in table.${hash} or (prev.requireFile args);
+
+  fjordlauncher-unwrapped = import ./pkgs/fjordlauncher/unwrapped.nix final prev;
+  fjordlauncher = final.prismlauncher.override { prismlauncher-unwrapped = fjordlauncher-unwrapped; };
 }

pkgs/fjordlauncher/01-authlib-enforcement.patch

@@ -0,0 +1,19 @@
+diff --git a/launcher/ui/pages/global/AccountListPage.cpp b/launcher/ui/pages/global/AccountListPage.cpp
+index 384af07fe..c3f3601df 100644
+--- a/launcher/ui/pages/global/AccountListPage.cpp
++++ b/launcher/ui/pages/global/AccountListPage.cpp
+@@ -135,12 +135,11 @@ void AccountListPage::listChanged()
+ void AccountListPage::on_actionAddAuthlibInjector_triggered()
+ {
+     if (!m_accounts->anyAccountIsValid()) {
+-        QMessageBox::warning(this, tr("Error"),
+-                             tr("You must add a Microsoft account that owns Minecraft before you can add an account on a custom "
++        QMessageBox::warning(this, tr("Warning"),
++                             tr("You should have a license for minecraft before adding an account on a custom "
+                                 "authentication server."
+                                 "<br><br>"
+                                 "If you have lost your account you can contact Microsoft for support."));
+-        return;
+     }
+ 
+     MinecraftAccountPtr account = AuthlibInjectorLoginDialog::newAccount(

pkgs/fjordlauncher/unwrapped.nix

@@ -0,0 +1,15 @@
+final: prev:
+
+final.prismlauncher-unwrapped.overrideAttrs (oldAttrs: rec {
+  pname = "fjordlauncher-unwrapped";
+  version = "9.2.1";
+
+  src = final.fetchFromGitHub {
+    owner = "unmojang";
+    repo = "FjordLauncher";
+    tag = version;
+    hash = "sha256-4imIXuVrrihoJVVAmEt7ZBhgqdDzzXsSo6zaMy0xV9o=";
+  };
+
+  patches = [ ./01-authlib-enforcement.patch ];
+})