From cbfe2fc89bb774ce2cd22db4092a4b35bfcadb3e Mon Sep 17 00:00:00 2001
From: "Markus S. Wamser" <github-dev@mail2013.wamser.eu>
Date: Mon, 7 Mar 2022 23:19:06 +0100
Subject: [PATCH] boost: suppress GCC warnings on older versions

(cherry picked from commit c742a5c5375494e85d733c2dd692946998b93479)
---
 pkgs/development/libraries/boost/generic.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/development/libraries/boost/generic.nix b/pkgs/development/libraries/boost/generic.nix
index fdc8f7c21f18..932abf6c173c 100644
--- a/pkgs/development/libraries/boost/generic.nix
+++ b/pkgs/development/libraries/boost/generic.nix
@@ -126,6 +126,13 @@ stdenv.mkDerivation {
     stripLen = 1;
     extraPrefix = "libs/context/";
   })
+  # Fix compiler warning with GCC >= 8; TODO: patch may apply to older versions
+  ++ optional (versionAtLeast version "1.65" &&
+               versionOlder version "1.67") (fetchpatch {
+    url = "https://github.com/boostorg/mpl/commit/f48fd09d021db9a28bd7b8452c175897e1af4485.patch";
+    sha256 = "15d2a636hhsb1xdyp44x25dyqfcaws997vnp9kl1mhzvxjzz7hb0";
+    stripLen = 1;
+  })
   ++ optional (and (versionAtLeast version "1.70") (!versionAtLeast version "1.73")) ./cmake-paths.patch
   ++ optional (versionAtLeast version "1.73") ./cmake-paths-173.patch;