--- /dev/null
+From 0ec042734f63a3a870920b1e71f07851d335ea45 Mon Sep 17 00:00:00 2001
+From: Mart Raudsepp <leio@gentoo.org>
+Date: Sun, 29 Mar 2020 16:05:36 +0300
+Subject: [PATCH] build: Fix python files installation handling
+
+The deprecated meson python3 module tends to end up installing only
+to a python version that meson is installed for too, possibly
+breaking some expectations downstream that want it installed to
+a specific python3 version, that might not match what the build
+machine uses for meson.
+Fix it by using the non-deprecated python module and methods from it.
+
+The python module exists since 0.46, which should be safe to require
+by now. There were meson 0.50 features used already, but unnecessarily,
+as the configure_file install parameter was added then, but all versions
+default to `true` anyhow. However in practice this only emitted a
+warning with newer meson versions and was able to build fine with older
+versions too. However fix it too, so that we are now warning-free for
+meson features after raising of the meson version dep.
+---
+ gtweak/meson.build | 5 ++---
+ meson.build | 12 ++++++++----
+ 2 files changed, 10 insertions(+), 7 deletions(-)
+
+diff --git a/gtweak/meson.build b/gtweak/meson.build
+index 3d9a743..4e558b4 100644
+--- a/gtweak/meson.build
++++ b/gtweak/meson.build
+@@ -11,7 +11,6 @@ configure_file(
+ input: 'defs.py.in',
+ output: 'defs.py',
+ configuration: defs_conf,
+- install: true,
+ install_dir: gtweakdir
+ )
+
+@@ -46,5 +45,5 @@ tweak_sources = [
+ 'tweaks/tweak_wacom.py',
+ ]
+
+-install_data(shell_sources, install_dir: gtweakdir)
+-install_data(tweak_sources, install_dir: gtweakdir + '/tweaks')
++python3.install_sources(shell_sources, subdir: 'gtweak')
++python3.install_sources(tweak_sources, subdir: join_paths('gtweak', 'tweaks'))
+diff --git a/meson.build b/meson.build
+index b7da518..df49ae3 100644
+--- a/meson.build
++++ b/meson.build
+@@ -1,11 +1,16 @@
+ project('gnome-tweaks',
+ version: '3.34.0',
+- meson_version: '>= 0.40.0'
++ meson_version: '>= 0.46.0'
+ )
+
+ gnome = import('gnome')
+ i18n = import('i18n')
+-python3 = import('python3')
++pymod = import('python')
++python3 = pymod.find_installation('python3')
++
++if not python3.found()
++ error('No valid python3 installation found')
++endif
+
+ prefix = get_option('prefix')
+
+@@ -13,13 +18,12 @@ bindir = join_paths(prefix, get_option('bindir'))
+ datadir = join_paths(prefix, get_option('datadir'))
+ libexecdir = join_paths(prefix, get_option('libexecdir'))
+ localedir = join_paths(prefix, get_option('localedir'))
+-pythondir = join_paths(prefix, python3.sysconfig_path('purelib'))
+
+ pkgdatadir = join_paths(datadir, meson.project_name())
+
+ appdatadir = join_paths(datadir, 'metainfo')
+ desktopdir = join_paths(datadir, 'applications')
+-gtweakdir = join_paths(pythondir, 'gtweak')
++gtweakdir = python3.get_install_dir(subdir: 'gtweak')
+ icondir = join_paths(datadir, 'icons', 'hicolor')
+ schemadir = join_paths(datadir, 'glib-2.0', 'schemas')
+
+--
+2.20.1
+
--- /dev/null
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+PYTHON_COMPAT=( python3_{6,7,8} )
+
+inherit gnome.org meson python-single-r1 xdg
+
+DESCRIPTION="Customize advanced GNOME 3 options"
+HOMEPAGE="https://wiki.gnome.org/Apps/Tweaks"
+
+LICENSE="GPL-3+ CC0-1.0"
+SLOT="0"
+
+IUSE=""
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+KEYWORDS="~amd64 ~arm64 ~ia64 ~ppc ~ppc64 ~x86"
+
+DEPEND="${PYTHON_DEPS}"
+# See README.md for list of deps
+RDEPEND="${DEPEND}
+ $(python_gen_cond_dep '
+ >=dev-python/pygobject-3.10.2:3[${PYTHON_MULTI_USEDEP}]
+ ')
+ >=gnome-base/gnome-settings-daemon-3
+ x11-themes/sound-theme-freedesktop
+
+ >=dev-libs/glib-2.58:2
+ >=x11-libs/gtk+-3.12:3[introspection]
+ >=gnome-base/gnome-desktop-3.30:3[introspection]
+ gui-libs/libhandy:0.0[introspection]
+ net-libs/libsoup:2.4[introspection]
+ x11-libs/libnotify[introspection]
+
+ >=gnome-base/gsettings-desktop-schemas-3.33.0
+ >=gnome-base/gnome-shell-3.24
+ x11-wm/mutter
+"
+BDEPEND=">=sys-devel/gettext-0.19.8"
+
+PATCHES=(
+ "${FILESDIR}"/3.28.1-gentoo-cursor-themes.patch # Add contents of Gentoo's cursor theme directory to cursor theme list
+ "${FILESDIR}"/${PV}-fix-python.patch
+)
+
+src_install() {
+ meson_src_install
+ python_optimize
+ python_fix_shebang "${ED}"/usr/bin/
+}