From 69b87ae0ec53ab876263ce5bae4bc7fd9bf3aa4c Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Thu, 26 Jan 2023 12:20:11 +0000
Subject: [PATCH 01/12] libsoup_3: re-disable introspection if no emulator

e.g. when cross compiling from Linux to FreeBSD.
---
 pkgs/development/libraries/libsoup/3.x.nix | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/pkgs/development/libraries/libsoup/3.x.nix b/pkgs/development/libraries/libsoup/3.x.nix
index 62abb162b00..2ea9978ed48 100644
--- a/pkgs/development/libraries/libsoup/3.x.nix
+++ b/pkgs/development/libraries/libsoup/3.x.nix
@@ -9,7 +9,9 @@
 , libsysprof-capture
 , sqlite
 , glib-networking
+, buildPackages
 , gobject-introspection
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
 , vala
 , libpsl
 , python3
@@ -22,7 +24,7 @@ stdenv.mkDerivation rec {
   pname = "libsoup";
   version = "3.2.2";
 
-  outputs = [ "out" "dev" "devdoc" ];
+  outputs = [ "out" "dev" ] ++ lib.optional withIntrospection "devdoc";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
@@ -39,6 +41,7 @@ stdenv.mkDerivation rec {
     pkg-config
     glib
     python3
+  ] ++ lib.optionals withIntrospection [
     gi-docgen
     gobject-introspection
     vala
@@ -61,15 +64,16 @@ stdenv.mkDerivation rec {
   mesonFlags = [
     "-Dtls_check=false" # glib-networking is a runtime dependency, not a compile-time dependency
     "-Dgssapi=disabled"
-    "-Dvapi=enabled"
-    "-Dintrospection=enabled"
     "-Dntlm=disabled"
     # Requires wstest from autobahn-testsuite.
     "-Dautobahn=disabled"
     # Requires gnutls, not added for closure size.
     "-Dpkcs11_tests=disabled"
-  ] ++ lib.optionals (!stdenv.isLinux) [
-    "-Dsysprof=disabled"
+
+    (lib.mesonEnable "docs" withIntrospection)
+    (lib.mesonEnable "introspection" withIntrospection)
+    (lib.mesonEnable "sysprof" stdenv.isLinux)
+    (lib.mesonEnable "vapi" withIntrospection)
   ];
 
   # TODO: For some reason the pkg-config setup hook does not pick this up.

From 7c643c33121fd54162f7e81c148b776e903c05d2 Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Mon, 6 Feb 2023 14:53:40 +0000
Subject: [PATCH 02/12] gsettings-desktop-schemas: re-disable introspection if
 no emulator

e.g. when cross compiling from Linux to FreeBSD.

Fixes: 24723644acd ("gsettings-desktop-schemas: build gir when cross")
---
 .../libraries/gsettings-desktop-schemas/default.nix        | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pkgs/development/libraries/gsettings-desktop-schemas/default.nix b/pkgs/development/libraries/gsettings-desktop-schemas/default.nix
index 7431ca1f82a..c21b3a3e535 100644
--- a/pkgs/development/libraries/gsettings-desktop-schemas/default.nix
+++ b/pkgs/development/libraries/gsettings-desktop-schemas/default.nix
@@ -3,6 +3,8 @@
 , pkg-config
 , glib
 , gobject-introspection
+, buildPackages
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
 , meson
 , ninja
 , python3
@@ -27,9 +29,14 @@ stdenv.mkDerivation rec {
     ninja
     pkg-config
     python3
+  ] ++ lib.optionals withIntrospection [
     gobject-introspection
   ];
 
+  mesonFlags = [
+    (lib.mesonBool "introspection" withIntrospection)
+  ];
+
   postPatch = ''
     chmod +x build-aux/meson/post-install.py
     patchShebangs build-aux/meson/post-install.py

From 8ea1ca271b3df191f8e0eef50ba03561fbca1f0d Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Mon, 6 Feb 2023 15:28:47 +0000
Subject: [PATCH 03/12] at-spi2-core: re-disable introspection if no emulator

e.g. when cross compiling from Linux to FreeBSD.

Fixes: e31262c3eef ("at-spi2-core: make introspection unconditional")
---
 pkgs/development/libraries/at-spi2-core/default.nix | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/at-spi2-core/default.nix b/pkgs/development/libraries/at-spi2-core/default.nix
index 3a2f446cf84..f34262b03f2 100644
--- a/pkgs/development/libraries/at-spi2-core/default.nix
+++ b/pkgs/development/libraries/at-spi2-core/default.nix
@@ -5,6 +5,8 @@
 , ninja
 , pkg-config
 , gobject-introspection
+, buildPackages
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
 , gsettings-desktop-schemas
 , makeWrapper
 , dbus
@@ -30,11 +32,13 @@ stdenv.mkDerivation rec {
   };
 
   nativeBuildInputs = [
+    glib
     meson
     ninja
     pkg-config
-    gobject-introspection
     makeWrapper
+  ] ++ lib.optionals withIntrospection [
+    gobject-introspection
   ];
 
   buildInputs = [
@@ -58,7 +62,6 @@ stdenv.mkDerivation rec {
   doCheck = false;
 
   mesonFlags = [
-    "-Dintrospection=yes"
     # Provide dbus-daemon fallback when it is not already running when
     # at-spi2-bus-launcher is executed. This allows us to avoid
     # including the entire dbus closure in libraries linked with

From 430a9ba1307f99ff364011915abe5d144e18b60f Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Mon, 6 Feb 2023 15:45:12 +0000
Subject: [PATCH 04/12] gdk-pixbuf: re-disable introspection if no emulator

e.g. when cross compiling from Linux to FreeBSD.

Fixes: 1bd8727a4ca ("various: enable gobject-introspection when cross-compiling")
---
 .../libraries/gdk-pixbuf/default.nix          | 20 +++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/pkgs/development/libraries/gdk-pixbuf/default.nix b/pkgs/development/libraries/gdk-pixbuf/default.nix
index ca0e8f81c4d..bece2287c05 100644
--- a/pkgs/development/libraries/gdk-pixbuf/default.nix
+++ b/pkgs/development/libraries/gdk-pixbuf/default.nix
@@ -14,19 +14,21 @@
 , libjpeg
 , libpng
 , gnome
-, gobject-introspection
-, buildPackages
 , doCheck ? false
 , makeWrapper
 , lib
 , testers
+, buildPackages
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
+, gobject-introspection
 }:
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "gdk-pixbuf";
   version = "2.42.10";
 
-  outputs = [ "out" "dev" "man" "devdoc" ]
+  outputs = [ "out" "dev" "man" ]
+    ++ lib.optional withIntrospection "devdoc"
     ++ lib.optional (stdenv.buildPlatform == stdenv.hostPlatform) "installedTests";
 
   src = let
@@ -56,13 +58,14 @@ stdenv.mkDerivation (finalAttrs: {
     python3
     makeWrapper
     glib
-    gi-docgen
-    gobject-introspection
 
     # for man pages
     docutils
   ] ++ lib.optionals stdenv.isDarwin [
     fixDarwinDylibNames
+  ] ++ lib.optionals withIntrospection [
+    gi-docgen
+    gobject-introspection
   ];
 
   propagatedBuildInputs = [
@@ -74,7 +77,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   mesonFlags = [
     "-Dgio_sniffing=false"
-    "-Dgtk_doc=true"
+    (lib.mesonBool "gtk_doc" withIntrospection)
+    (lib.mesonEnable "introspection" withIntrospection)
   ];
 
   postPatch = ''
@@ -104,7 +108,7 @@ stdenv.mkDerivation (finalAttrs: {
           install_name_tool -change @rpath/libgdk_pixbuf-2.0.0.dylib $out/lib/libgdk_pixbuf-2.0.0.dylib $f
           mv $f ''${f%.dylib}.so
       done
-    '' + ''
+    '' + lib.optionalString withIntrospection ''
       # We need to install 'loaders.cache' in lib/gdk-pixbuf-2.0/2.10.0/
       ${stdenv.hostPlatform.emulator buildPackages} $dev/bin/gdk-pixbuf-query-loaders --update-cache
     '';
@@ -116,7 +120,7 @@ stdenv.mkDerivation (finalAttrs: {
     done
   '';
 
-  postFixup = ''
+  postFixup = lib.optionalString withIntrospection ''
     # Cannot be in postInstall, otherwise _multioutDocs hook in preFixup will move right back.
     moveToOutput "share/doc" "$devdoc"
   '';

From ffb1b62b5f338a27232bac210c9dc22831f6d151 Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Mon, 6 Feb 2023 18:05:04 +0000
Subject: [PATCH 05/12] json-glib: re-disable introspection if no emulator

e.g. when cross compiling from Linux to FreeBSD.

Fixes: 1bd8727a4ca ("various: enable gobject-introspection when cross-compiling")
---
 pkgs/development/libraries/json-glib/default.nix | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/libraries/json-glib/default.nix b/pkgs/development/libraries/json-glib/default.nix
index efac3690851..4b54ccc0664 100644
--- a/pkgs/development/libraries/json-glib/default.nix
+++ b/pkgs/development/libraries/json-glib/default.nix
@@ -7,6 +7,8 @@
 , nixosTests
 , pkg-config
 , gettext
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
+, buildPackages
 , gobject-introspection
 , gi-docgen
 , libxslt
@@ -18,7 +20,8 @@ stdenv.mkDerivation rec {
   pname = "json-glib";
   version = "1.6.6";
 
-  outputs = [ "out" "dev" "devdoc" "installedTests" ];
+  outputs = [ "out" "dev" "installedTests" ]
+    ++ lib.optional withIntrospection "devdoc";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
@@ -43,10 +46,11 @@ stdenv.mkDerivation rec {
     gettext
     glib
     libxslt
-    gobject-introspection
-    gi-docgen
   ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
     fixDarwinDylibNames
+  ] ++ lib.optionals withIntrospection [
+    gobject-introspection
+    gi-docgen
   ];
 
   propagatedBuildInputs = [
@@ -55,6 +59,8 @@ stdenv.mkDerivation rec {
 
   mesonFlags = [
     "-Dinstalled_test_prefix=${placeholder "installedTests"}"
+    (lib.mesonEnable "introspection" withIntrospection)
+    (lib.mesonEnable "gtk_doc" withIntrospection)
   ];
 
   # Run-time dependency gi-docgen found: NO (tried pkgconfig and cmake)

From e1bd8afb0794c0af1b35bcd623e0d9e88cf845b4 Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Mon, 6 Feb 2023 20:33:43 +0000
Subject: [PATCH 06/12] libsoup: re-disable introspection if no emulator

e.g. when cross compiling from Linux to FreeBSD.

Fixes: 1bd8727a4ca ("various: enable gobject-introspection when cross-compiling")
---
 pkgs/development/libraries/libsoup/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/libraries/libsoup/default.nix b/pkgs/development/libraries/libsoup/default.nix
index 05bf4b15523..df9ce5c5b6e 100644
--- a/pkgs/development/libraries/libsoup/default.nix
+++ b/pkgs/development/libraries/libsoup/default.nix
@@ -15,6 +15,8 @@
 , gnomeSupport ? true
 , sqlite
 , glib-networking
+, buildPackages
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
 }:
 
 stdenv.mkDerivation rec {
@@ -37,6 +39,7 @@ stdenv.mkDerivation rec {
     ninja
     pkg-config
     glib
+  ] ++ lib.optionals withIntrospection [
     gobject-introspection
     vala
   ];
@@ -58,6 +61,8 @@ stdenv.mkDerivation rec {
   mesonFlags = [
     "-Dtls_check=false" # glib-networking is a runtime dependency, not a compile-time dependency
     "-Dgssapi=disabled"
+    "-Dvapi=${if withIntrospection then "enabled" else "disabled"}"
+    "-Dintrospection=${if withIntrospection then "enabled" else "disabled"}"
     "-Dgnome=${lib.boolToString gnomeSupport}"
     "-Dntlm=disabled"
   ] ++ lib.optionals (!stdenv.isLinux) [

From 5ecef164cb5c0edd7368f816812ca8d3f889e60b Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Wed, 1 Mar 2023 16:02:57 +0000
Subject: [PATCH 07/12] libsecret: disable introspection if no emulator

---
 pkgs/development/libraries/libsecret/default.nix | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/libraries/libsecret/default.nix b/pkgs/development/libraries/libsecret/default.nix
index 4a2ad99af4d..607f038b884 100644
--- a/pkgs/development/libraries/libsecret/default.nix
+++ b/pkgs/development/libraries/libsecret/default.nix
@@ -12,6 +12,8 @@
 , docbook_xml_dtd_42
 , libgcrypt
 , gobject-introspection
+, buildPackages
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
 , vala
 , gi-docgen
 , gnome
@@ -24,7 +26,7 @@ stdenv.mkDerivation rec {
   pname = "libsecret";
   version = "0.20.5";
 
-  outputs = [ "out" "dev" "devdoc" ];
+  outputs = [ "out" "dev" ] ++ lib.optional withIntrospection "devdoc";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
@@ -44,10 +46,11 @@ stdenv.mkDerivation rec {
     docbook-xsl-nons
     docbook_xml_dtd_42
     libintl
-    gobject-introspection
     vala
-    gi-docgen
     glib
+  ] ++ lib.optionals withIntrospection [
+    gi-docgen
+    gobject-introspection
   ];
 
   buildInputs = [
@@ -66,7 +69,12 @@ stdenv.mkDerivation rec {
     gjs
   ];
 
-  doCheck = stdenv.isLinux;
+  mesonFlags = [
+    (lib.mesonBool "introspection" withIntrospection)
+    (lib.mesonBool "gtk_doc" withIntrospection)
+  ];
+
+  doCheck = stdenv.isLinux && withIntrospection;
 
   postPatch = ''
     patchShebangs ./tool/test-*.sh

From 9144866bb79628ffd0a92875474429664d70250f Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Wed, 1 Mar 2023 16:08:08 +0000
Subject: [PATCH 08/12] libical: re-disable introspection if no emulator

e.g. when cross compiling from Linux to FreeBSD.

We have to get the build libical from pkgsBuildBuild, to avoid picking
up a propagated gobject-introspection host dependency.

Fixes: 1bd8727a4ca ("various: enable gobject-introspection when cross-compiling")
---
 .../development/libraries/libical/default.nix | 20 ++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/pkgs/development/libraries/libical/default.nix b/pkgs/development/libraries/libical/default.nix
index f85181d376a..2cb8642ca87 100644
--- a/pkgs/development/libraries/libical/default.nix
+++ b/pkgs/development/libraries/libical/default.nix
@@ -1,7 +1,8 @@
 { lib
 , stdenv
 , fetchFromGitHub
-, buildPackages
+, pkgsBuildBuild
+, pkgsBuildHost
 , cmake
 , glib
 , icu
@@ -13,6 +14,7 @@
 , python3
 , tzdata
 , fixDarwinDylibNames
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable pkgsBuildHost
 , gobject-introspection
 , vala
 }:
@@ -31,20 +33,24 @@ stdenv.mkDerivation rec {
   };
 
   strictDeps = true;
+
+  depsBuildBuild = lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
+    # provides ical-glib-src-generator that runs during build
+    libical
+  ];
+
   nativeBuildInputs = [
     cmake
     ninja
     perl
     pkg-config
+  ] ++ lib.optionals withIntrospection [
     gobject-introspection
     vala
     # Docs building fails:
     # https://github.com/NixOS/nixpkgs/pull/67204
     # previously with https://github.com/NixOS/nixpkgs/pull/61657#issuecomment-495579489
     # gtk-doc docbook_xsl docbook_xml_dtd_43 # for docs
-  ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
-    # provides ical-glib-src-generator that runs during build
-    libical
   ] ++ lib.optionals stdenv.isDarwin [
     fixDarwinDylibNames
   ];
@@ -63,10 +69,10 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [
     "-DENABLE_GTK_DOC=False"
-    "-DGOBJECT_INTROSPECTION=True"
-    "-DICAL_GLIB_VAPI=True"
+    "-DGOBJECT_INTROSPECTION=${if withIntrospection then "True" else "False"}"
+    "-DICAL_GLIB_VAPI=${if withIntrospection then "True" else "False"}"
   ] ++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
-    "-DIMPORT_ICAL_GLIB_SRC_GENERATOR=${lib.getDev buildPackages.libical}/lib/cmake/LibIcal/IcalGlibSrcGenerator.cmake"
+    "-DIMPORT_ICAL_GLIB_SRC_GENERATOR=${lib.getDev pkgsBuildBuild.libical}/lib/cmake/LibIcal/IcalGlibSrcGenerator.cmake"
   ];
 
   patches = [

From 2654807c757bc23c52863307775000535b8576bf Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Wed, 1 Mar 2023 16:18:53 +0000
Subject: [PATCH 09/12] tracker: disable introspection if no emulator

e.g. when cross compiling from Linux to FreeBSD.
---
 pkgs/development/libraries/tracker/default.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/tracker/default.nix b/pkgs/development/libraries/tracker/default.nix
index 9027c14de90..f66c08684d1 100644
--- a/pkgs/development/libraries/tracker/default.nix
+++ b/pkgs/development/libraries/tracker/default.nix
@@ -7,6 +7,8 @@
 , pkg-config
 , asciidoc
 , gobject-introspection
+, buildPackages
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
 , python3
 , docbook-xsl-nons
 , docbook_xml_dtd_45
@@ -52,12 +54,14 @@ stdenv.mkDerivation rec {
     pkg-config
     asciidoc
     gettext
+    glib
     libxslt
     wrapGAppsNoGuiHook
-    gobject-introspection
     docbook-xsl-nons
     docbook_xml_dtd_45
     (python3.pythonForBuild.withPackages (p: [ p.pygobject3 ]))
+  ] ++ lib.optionals withIntrospection [
+    gobject-introspection
   ];
 
   buildInputs = [
@@ -77,6 +81,8 @@ stdenv.mkDerivation rec {
 
   mesonFlags = [
     "-Ddocs=true"
+    (lib.mesonEnable "introspection" withIntrospection)
+    (lib.mesonBool "test_utils" withIntrospection)
   ] ++ (
     let
       # https://gitlab.gnome.org/GNOME/tracker/-/blob/master/meson.build#L159

From fef0a52db9b674209e22162ff89f7602ba98c148 Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Wed, 1 Mar 2023 16:45:08 +0000
Subject: [PATCH 10/12] libmanette: disable introspection if no emulator

e.g. when cross compiling from Linux to FreeBSD.
---
 .../development/libraries/libmanette/default.nix | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/pkgs/development/libraries/libmanette/default.nix b/pkgs/development/libraries/libmanette/default.nix
index 7629dd8a6f1..0bc649780c8 100644
--- a/pkgs/development/libraries/libmanette/default.nix
+++ b/pkgs/development/libraries/libmanette/default.nix
@@ -6,6 +6,8 @@
 , pkg-config
 , vala
 , gobject-introspection
+, buildPackages
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
 , gtk-doc
 , docbook-xsl-nons
 , docbook_xml_dtd_43
@@ -19,7 +21,7 @@ stdenv.mkDerivation rec {
   pname = "libmanette";
   version = "0.2.6";
 
-  outputs = [ "out" "dev" "devdoc" ];
+  outputs = [ "out" "dev" ] ++ lib.optional withIntrospection "devdoc";
 
   src = fetchurl {
     url = "mirror://gnome/sources/${pname}/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
@@ -30,23 +32,29 @@ stdenv.mkDerivation rec {
     meson
     ninja
     pkg-config
+    glib
+  ] ++ lib.optionals withIntrospection [
     vala
     gobject-introspection
     gtk-doc
     docbook-xsl-nons
     docbook_xml_dtd_43
-  ] ++ lib.optionals (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
+  ] ++ lib.optionals (withIntrospection && !stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
     mesonEmulatorHook
   ];
 
   buildInputs = [
     glib
-    libgudev
     libevdev
+  ] ++ lib.optionals withIntrospection [
+    libgudev
   ];
 
   mesonFlags = [
-    "-Ddoc=true"
+    (lib.mesonBool "doc" withIntrospection)
+    (lib.mesonEnable "gudev" withIntrospection)
+    (lib.mesonBool "introspection" withIntrospection)
+    (lib.mesonBool "vapi" withIntrospection)
   ];
 
   doCheck = true;

From 52a479d024e6eba3ce7bc3178d3b53591d9a92ba Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Wed, 1 Mar 2023 17:03:30 +0000
Subject: [PATCH 11/12] polkit: re-disable introspection if no emulator

e.g. when cross compiling from Linux to FreeBSD.

Fixes: 1bd8727a4ca ("various: enable gobject-introspection when cross-compiling")
---
 pkgs/development/libraries/polkit/default.nix | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/libraries/polkit/default.nix b/pkgs/development/libraries/polkit/default.nix
index ec05f890f77..e5a55651712 100644
--- a/pkgs/development/libraries/polkit/default.nix
+++ b/pkgs/development/libraries/polkit/default.nix
@@ -24,6 +24,8 @@
 , useSystemd ? lib.meta.availableOn stdenv.hostPlatform systemdMinimal
 , systemdMinimal
 , elogind
+, buildPackages
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
 # A few tests currently fail on musl (polkitunixusertest, polkitunixgrouptest, polkitidentitytest segfault).
 # Not yet investigated; it may be due to the "Make netgroup support optional"
 # patch not updating the tests correctly yet, or doing something wrong,
@@ -65,14 +67,12 @@ stdenv.mkDerivation rec {
 
   nativeBuildInputs = [
     glib
-    gtk-doc
     pkg-config
     gettext
     meson
     ninja
     perl
     rsync
-    gobject-introspection
     (python3.pythonForBuild.withPackages (pp: with pp; [
       dbus-python
       (python-dbusmock.overridePythonAttrs (attrs: {
@@ -85,7 +85,10 @@ stdenv.mkDerivation rec {
     libxslt
     docbook-xsl-nons
     docbook_xml_dtd_412
-  ] ++ lib.optionals (!stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
+  ] ++ lib.optionals withIntrospection [
+    gobject-introspection
+    gtk-doc
+  ] ++ lib.optionals (withIntrospection && !stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
     mesonEmulatorHook
   ];
 
@@ -113,7 +116,9 @@ stdenv.mkDerivation rec {
     "-Dsystemdsystemunitdir=${placeholder "out"}/lib/systemd/system"
     "-Dpolkitd_user=polkituser" #TODO? <nixos> config.ids.uids.polkituser
     "-Dos_type=redhat" # only affects PAM includes
+    "-Dintrospection=${lib.boolToString withIntrospection}"
     "-Dtests=${lib.boolToString doCheck}"
+    "-Dgtk_doc=${lib.boolToString withIntrospection}"
     "-Dman=true"
   ] ++ lib.optionals stdenv.isLinux [
     "-Dsession_tracking=${if useSystemd then "libsystemd-login" else "libelogind"}"

From 0913507b1360c55a62f48a82b13314db001a1f3e Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Wed, 1 Mar 2023 17:07:03 +0000
Subject: [PATCH 12/12] gtk3: re-disable introspection if no emulator

e.g. when cross compiling from Linux to FreeBSD.
---
 pkgs/development/libraries/gtk/3.x.nix | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/pkgs/development/libraries/gtk/3.x.nix b/pkgs/development/libraries/gtk/3.x.nix
index af81a55fcaa..5a1cc8ca9c5 100644
--- a/pkgs/development/libraries/gtk/3.x.nix
+++ b/pkgs/development/libraries/gtk/3.x.nix
@@ -8,6 +8,7 @@
 , docbook_xml_dtd_43
 , gtk-doc
 , meson
+, mesonEmulatorHook
 , ninja
 , python3
 , makeWrapper
@@ -21,6 +22,8 @@
 , atk
 , at-spi2-atk
 , gobject-introspection
+, buildPackages
+, withIntrospection ? stdenv.hostPlatform.emulatorAvailable buildPackages
 , fribidi
 , xorg
 , libepoxy
@@ -39,7 +42,6 @@
 , wayland-protocols
 , xineramaSupport ? stdenv.isLinux
 , cupsSupport ? stdenv.isLinux
-, withGtkDoc ? stdenv.isLinux && (stdenv.buildPlatform == stdenv.hostPlatform)
 , cups
 , AppKit
 , Cocoa
@@ -63,7 +65,7 @@ stdenv.mkDerivation (finalAttrs: {
   pname = "gtk+3";
   version = "3.24.36";
 
-  outputs = [ "out" "dev" ] ++ lib.optional withGtkDoc "devdoc";
+  outputs = [ "out" "dev" ] ++ lib.optional withIntrospection "devdoc";
   outputBin = "dev";
 
   setupHooks = [
@@ -94,7 +96,6 @@ stdenv.mkDerivation (finalAttrs: {
   ];
   nativeBuildInputs = [
     gettext
-    gobject-introspection
     makeWrapper
     meson
     ninja
@@ -102,12 +103,15 @@ stdenv.mkDerivation (finalAttrs: {
     python3
     sassc
     gdk-pixbuf
-  ] ++ finalAttrs.setupHooks ++ lib.optionals withGtkDoc [
+  ] ++ finalAttrs.setupHooks ++ lib.optionals withIntrospection [
+    gobject-introspection
     docbook_xml_dtd_43
     docbook-xsl-nons
     gtk-doc
     # For xmllint
     libxml2
+  ] ++ lib.optionals (withIntrospection && !stdenv.buildPlatform.canExecute stdenv.hostPlatform) [
+    mesonEmulatorHook
   ] ++ lib.optionals waylandSupport [
     wayland-scanner
   ];
@@ -157,12 +161,13 @@ stdenv.mkDerivation (finalAttrs: {
   ];
 
   mesonFlags = [
-    "-Dgtk_doc=${lib.boolToString withGtkDoc}"
+    "-Dgtk_doc=${lib.boolToString withIntrospection}"
     "-Dtests=false"
     "-Dtracker3=${lib.boolToString trackerSupport}"
     "-Dbroadway_backend=${lib.boolToString broadwaySupport}"
     "-Dx11_backend=${lib.boolToString x11Support}"
     "-Dquartz_backend=${lib.boolToString (stdenv.isDarwin && !x11Support)}"
+    "-Dintrospection=${lib.boolToString withIntrospection}"
   ];
 
   doCheck = false; # needs X11