From 7bea0bc3bf2f3c3efc33081fef0c52304203777b Mon Sep 17 00:00:00 2001
From: Moritz Angermann <moritz@stable-haskell.org>
Date: Tue, 9 Sep 2025 12:55:14 +0900
Subject: [PATCH] compiler: add -no-rts flag

---
 compiler/GHC/Driver/DynFlags.hs | 3 ++-
 compiler/GHC/Driver/Flags.hs    | 1 +
 compiler/GHC/Driver/Session.hs  | 2 ++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/compiler/GHC/Driver/DynFlags.hs b/compiler/GHC/Driver/DynFlags.hs
index cbe183054130..565b68c20bbd 100644
--- a/compiler/GHC/Driver/DynFlags.hs
+++ b/compiler/GHC/Driver/DynFlags.hs
@@ -876,7 +876,8 @@ packageFlagsChanged idflags1 idflags0 =
    packageGFlags dflags = map (`gopt` dflags)
      [ Opt_HideAllPackages
      , Opt_HideAllPluginPackages
-     , Opt_AutoLinkPackages ]
+     , Opt_AutoLinkPackages
+     , Opt_NoRts ]
 
 instance Outputable PackageFlag where
     ppr (ExposePackage n arg rn) = text n <> braces (ppr arg <+> ppr rn)
diff --git a/compiler/GHC/Driver/Flags.hs b/compiler/GHC/Driver/Flags.hs
index 6b7365b0e003..58e80e41b400 100644
--- a/compiler/GHC/Driver/Flags.hs
+++ b/compiler/GHC/Driver/Flags.hs
@@ -862,6 +862,7 @@ data GeneralFlag
 
    -- temporary flags
    | Opt_AutoLinkPackages
+   | Opt_NoRts
    | Opt_ImplicitImportQualified
 
    -- keeping stuff
diff --git a/compiler/GHC/Driver/Session.hs b/compiler/GHC/Driver/Session.hs
index 34da4bbf5c2a..b3122006401d 100644
--- a/compiler/GHC/Driver/Session.hs
+++ b/compiler/GHC/Driver/Session.hs
@@ -1313,6 +1313,8 @@ dynamic_flags_deps = [
         (NoArg (unSetGeneralFlag Opt_AutoLinkPackages))
   , make_ord_flag defGhcFlag "no-hs-main"
         (NoArg (setGeneralFlag Opt_NoHsMain))
+  , make_ord_flag defGhcFlag "no-rts"
+        (NoArg (setGeneralFlag Opt_NoRts))
   , make_ord_flag defGhcFlag "fno-state-hack"
         (NoArg (setGeneralFlag Opt_G_NoStateHack))
   , make_ord_flag defGhcFlag "fno-opt-coercion"