From fe7b5496aa2ec34a16f02f06b34aaaa039a853e3 Mon Sep 17 00:00:00 2001
From: midchildan <git@midchildan.org>
Date: Fri, 26 Mar 2021 01:39:37 +0900
Subject: [PATCH] s3backer: add darwin build

---
 pkgs/tools/filesystems/s3backer/default.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/filesystems/s3backer/default.nix b/pkgs/tools/filesystems/s3backer/default.nix
index 0a05a683adb..b196b294839 100644
--- a/pkgs/tools/filesystems/s3backer/default.nix
+++ b/pkgs/tools/filesystems/s3backer/default.nix
@@ -16,6 +16,12 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ autoreconfHook pkg-config ];
   buildInputs = [ fuse curl expat ];
 
+  # AC_CHECK_DECLS doesn't work with clang
+  postPatch = lib.optionalString stdenv.cc.isClang ''
+    substituteInPlace configure.ac --replace \
+      'AC_CHECK_DECLS(fdatasync)' ""
+  '';
+
   autoreconfPhase = ''
     patchShebangs ./autogen.sh
     ./autogen.sh
@@ -25,6 +31,6 @@ stdenv.mkDerivation rec {
     homepage = "https://github.com/archiecobbs/s3backer";
     description = "FUSE-based single file backing store via Amazon S3";
     license = licenses.gpl2Plus;
-    platforms = with platforms; linux;
+    platforms = platforms.unix;
   };
 }