From b6af5b43ea00a71d160955560188b2d922884113 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Manuel=20B=C3=A4renz?= <mbaerenz@heilmannsoftware.de>
Date: Wed, 29 Jul 2026 10:09:52 +0200
Subject: [PATCH] haskellPackages.monad-bayes: disable test suite
 unconditionally

The exact-match SMC/RMSMC benchmark fixtures break with random >= 1.3
(which nightly ships), because the changed PRNG stream alters the sampled
output. Upstream CI stays green only because it is frozen on a 2021 nixpkgs
pin, so make the existing platform-conditional test skip unconditional.

https://github.com/tweag/monad-bayes/issues/368

Assisted-by: Claude Code (Claude Opus 4.8)
---
 .../haskell-modules/configuration-common.nix  | 21 +++++--------------
 1 file changed, 5 insertions(+), 16 deletions(-)

diff --git a/pkgs/development/haskell-modules/configuration-common.nix b/pkgs/development/haskell-modules/configuration-common.nix
index 286bc882fdd0..696f2dcab78c 100644
--- a/pkgs/development/haskell-modules/configuration-common.nix
+++ b/pkgs/development/haskell-modules/configuration-common.nix
@@ -2947,22 +2947,11 @@ with haskellLib;
   # 2025-04-13: jailbreak to allow hedgehog >= 1.5
   hw-bits = warnAfterVersion "0.7.2.2" (doJailbreak super.hw-bits);
 
-  monad-bayes =
-    # Floating point precision issues. Test suite is only checked on x86_64.
-    # https://github.com/tweag/monad-bayes/issues/368
-    dontCheckIf
-      (
-        let
-          inherit (pkgs.stdenv) hostPlatform;
-        in
-        !hostPlatform.isx86_64
-        # Presumably because we emulate x86_64-darwin via Rosetta, x86_64-darwin
-        # also fails on Hydra
-        || hostPlatform.isDarwin
-      )
-      # Too strict bounds on brick (<2.6), vty (<6.3)
-      # https://github.com/tweag/monad-bayes/issues/378
-      (doJailbreak super.monad-bayes);
+  # Test suite is brittle, dependent on the random number generator
+  # implementation and architecture. See:
+  # * https://github.com/tweag/monad-bayes/pull/389
+  # * https://github.com/tweag/monad-bayes/issues/368
+  monad-bayes = dontCheck (doJailbreak super.monad-bayes);
 
   # 2025-04-13: jailbreak to allow th-abstraction >= 0.7
   crucible = doJailbreak super.crucible;