From 718741995339d9814255734e134156ff8e2a66de Mon Sep 17 00:00:00 2001
From: Randy Eckenrode <randy@largeandhighquality.com>
Date: Sun, 4 Aug 2024 00:06:00 -0400
Subject: [PATCH] rpm: fix build on Darwin

RPM needs a 13.x SDK or newer.
---
 pkgs/tools/package-management/rpm/default.nix | 30 +++++++++++++++----
 1 file changed, 25 insertions(+), 5 deletions(-)

diff --git a/pkgs/tools/package-management/rpm/default.nix b/pkgs/tools/package-management/rpm/default.nix
index ae4352ca0109..c42bcca20c90 100644
--- a/pkgs/tools/package-management/rpm/default.nix
+++ b/pkgs/tools/package-management/rpm/default.nix
@@ -3,6 +3,7 @@
 , pkg-config
 , autoreconfHook
 , pandoc
+, fetchpatch2
 , fetchurl
 , cpio
 , zlib
@@ -23,6 +24,8 @@
 , sqlite
 , zstd
 , libcap
+, apple-sdk_13
+, darwinMinVersionHook
 }:
 
 stdenv.mkDerivation rec {
@@ -34,13 +37,33 @@ stdenv.mkDerivation rec {
     hash = "sha256-N/O0LAlmlB4q0/EP3jY5gkplkdBxl7qP0IacoHeeH1Y=";
   };
 
+  patches = [
+    # Resolves `error: expected expression` on clang
+    # See: https://github.com/rpm-software-management/rpm/issues/2435.
+    (fetchpatch2 {
+      url = "https://github.com/rpm-software-management/rpm/commit/b960c0b43a080287a7c13533eeb2d9f288db1414.diff?full_index=1";
+      hash = "sha256-0f7YOL2xR07xgAEN32oRbOjPsAsVmKFVtTLXUOeFAa8=";
+    })
+    # Fix missing includes required to build on Darwin.
+    # See: https://github.com/rpm-software-management/rpm/pull/2571.
+    (fetchpatch2 {
+      url = "https://github.com/rpm-software-management/rpm/commit/f07875392a09228b1a25c1763a50bbbd0f6798c2.diff?full_index=1";
+      hash = "sha256-DLpzMApRCgI9zqheglFtqL8E1vq9X/aQa0HMnIAQgk8=";
+    })
+    (fetchpatch2 {
+      url = "https://github.com/rpm-software-management/rpm/commit/b2e67642fd8cb64d8cb1cca9e759396c1c10807d.diff?full_index=1";
+      hash = "sha256-q3fIBfiUJVmw6Vi2/Bo/zX6/cqTM7aFnskKfMVK3DlU=";
+    })
+  ];
+
   outputs = [ "out" "dev" "man" ];
   separateDebugInfo = true;
 
   nativeBuildInputs = [ autoreconfHook pkg-config pandoc ];
   buildInputs = [ cpio zlib zstd bzip2 file libarchive libgcrypt nspr nss db xz python lua sqlite ]
     ++ lib.optional stdenv.cc.isClang llvmPackages.openmp
-    ++ lib.optional stdenv.hostPlatform.isLinux libcap;
+    ++ lib.optional stdenv.hostPlatform.isLinux libcap
+    ++ lib.optionals stdenv.hostPlatform.isDarwin [ apple-sdk_13 (darwinMinVersionHook "13.0") ];
 
   # rpm/rpmlib.h includes popt.h, and then the pkg-config file mentions these as linkage requirements
   propagatedBuildInputs = [ popt nss db bzip2 libarchive libbfd ]
@@ -92,9 +115,6 @@ stdenv.mkDerivation rec {
     license = with licenses; [ gpl2Plus lgpl21Plus ];
     description = "RPM Package Manager";
     maintainers = with maintainers; [ copumpkin ];
-    platforms = platforms.linux;
-    # Support for darwin was removed in https://github.com/NixOS/nixpkgs/pull/196350.
-    # This can be re-enables for apple_sdk.version >= 13.0.
-    badPlatforms = platforms.darwin;
+    platforms = platforms.linux ++ platforms.darwin;
   };
 }