From 45e2426453f3e43271fae4b2e1b94adfb995b44c Mon Sep 17 00:00:00 2001
From: Emily <vcs@emily.moe>
Date: Wed, 1 Jan 2025 13:02:58 +0000
Subject: [PATCH] boost{177,178,179,180,181,182,183}: conditionalize stacktrace
 flag

This library was introduced in Boost 1.85.

Fixes: 3e2ceab20157c37566df2f2ea35d4a6dac95732c
---
 pkgs/development/libraries/boost/generic.nix | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/boost/generic.nix b/pkgs/development/libraries/boost/generic.nix
index 91009c02167e..b3bd289c5ade 100644
--- a/pkgs/development/libraries/boost/generic.nix
+++ b/pkgs/development/libraries/boost/generic.nix
@@ -89,6 +89,8 @@ let
       "link=${link}"
       "-sEXPAT_INCLUDE=${expat.dev}/include"
       "-sEXPAT_LIBPATH=${expat.out}/lib"
+    ]
+    ++ lib.optionals (lib.versionAtLeast version "1.85") [
       (
         # The stacktrace from exception feature causes memory leaks when built
         # with libc++. For all other standard library implementations, i.e.
@@ -99,9 +101,8 @@ let
         else
           "define=BOOST_STACKTRACE_LIBCXX_RUNTIME_MAY_CAUSE_MEMORY_LEAK"
       )
-
-      # TODO: make this unconditional
     ]
+    # TODO: make this unconditional
     ++
       lib.optionals
         (