From b5c88efba7d7ce6ae830930613b40bd3b0a4aba9 Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Thu, 15 Aug 2024 10:12:42 +0200
Subject: [PATCH] gst_all_1.gstreamer: disable introspection if unavailable

---
 pkgs/development/libraries/gstreamer/core/default.nix | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/gstreamer/core/default.nix b/pkgs/development/libraries/gstreamer/core/default.nix
index 2cf0569b3e9e..e8f873555d70 100644
--- a/pkgs/development/libraries/gstreamer/core/default.nix
+++ b/pkgs/development/libraries/gstreamer/core/default.nix
@@ -15,9 +15,11 @@
 , lib
 , Cocoa
 , CoreServices
-, gobject-introspection
 , rustc
 , testers
+, gobject-introspection
+, buildPackages
+, withIntrospection ? lib.meta.availableOn stdenv.hostPlatform gobject-introspection && stdenv.hostPlatform.emulatorAvailable buildPackages
 , libunwind
 # darwin.libunwind doesn't have pkg-config definitions so meson doesn't detect it.
 , withLibunwind ? !stdenv.isDarwin && lib.meta.availableOn stdenv.hostPlatform libunwind
@@ -60,10 +62,11 @@ stdenv.mkDerivation (finalAttrs: {
     makeWrapper
     glib
     bash-completion
-    gobject-introspection
     rustc
   ] ++ lib.optionals stdenv.isLinux [
     libcap # for setcap binary
+  ] ++ lib.optionals withIntrospection [
+    gobject-introspection
   ] ++ lib.optionals enableDocumentation [
     hotdoc
   ];
@@ -88,6 +91,7 @@ stdenv.mkDerivation (finalAttrs: {
   mesonFlags = [
     "-Ddbghelp=disabled" # not needed as we already provide libunwind and libdw, and dbghelp is a fallback to those
     "-Dexamples=disabled" # requires many dependencies and probably not useful for our users
+    (lib.mesonEnable "introspection" withIntrospection)
     (lib.mesonEnable "doc" enableDocumentation)
     (lib.mesonEnable "libunwind" withLibunwind)
     (lib.mesonEnable "libdw" withLibunwind)