From 1dfcf7d2e7515d5856d7756c39e7fe9c0a9e5484 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <v@cunat.cz>
Date: Mon, 18 Apr 2022 20:27:58 +0200
Subject: [PATCH] libsForQt5.liblastfm: revert addition of flags on darwin

Apparently on x86_64-darwin there are also C files compiled,
and that doesn't go well with -std=c++*
https://hydra.nixos.org/build/174111870
Fortunately the flag only seems needed with gcc 11 so far.
---
 pkgs/development/libraries/liblastfm/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/liblastfm/default.nix b/pkgs/development/libraries/liblastfm/default.nix
index d663ca9b71a..68658d20ba6 100644
--- a/pkgs/development/libraries/liblastfm/default.nix
+++ b/pkgs/development/libraries/liblastfm/default.nix
@@ -23,7 +23,10 @@ stdenv.mkDerivation rec {
   buildInputs = [ fftwSinglePrec libsamplerate qtbase ]
     ++ lib.optional stdenv.isDarwin darwin.apple_sdk.frameworks.SystemConfiguration;
 
-  NIX_CFLAGS_COMPILE = [ "-std=c++11" ];
+  NIX_CFLAGS_COMPILE =
+    lib.optionals (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "11") [
+      "-std=c++11"
+    ];
 
   dontWrapQtApps = true;