net-im/telegram-desktop: Remove dependency on private Qt components

Closes: https://bugs.gentoo.org/908500
Thanks-to: ZetaCorvi@protonmail.com
Signed-off-by: Esteve Varela Colominas <esteve.varela@gmail.com>
Closes: https://github.com/gentoo/gentoo/pull/31538
Signed-off-by: Sam James <sam@gentoo.org>

2 files changed, 277 insertions, 0 deletions

diff --git a/net-im/telegram-desktop/files/tdesktop-4.8.4-remove-private-qt.patch b/net-im/telegram-desktop/files/tdesktop-4.8.4-remove-private-qt.patch
new file mode 100644
index 000000000000..3dcf17662564
--- /dev/null
+++ b/net-im/telegram-desktop/files/tdesktop-4.8.4-remove-private-qt.patch
@@ -0,0 +1,50 @@
+Remove uses of private Qt classes
+
+Currently, this is used to fix compatibility with odd environments, and only
+for Qt6. This causes more trouble than it's worth, because it means telegram
+must be rebuilt with every minor Qt bump.
+
+https://bugs.gentoo.org/908500
+
+--- tdesktop-4.8.4-full.orig/Telegram/lib_ui/ui/rp_widget.cpp
++++ tdesktop-4.8.4-full/Telegram/lib_ui/ui/rp_widget.cpp
+@@ -12,38 +12,9 @@
+ 
+ #include <QtGui/QWindow>
+ #include <QtGui/QtEvents>
+-#include <private/qwidget_p.h>
+-
+-class TWidgetPrivate : public QWidgetPrivate {
+-public:
+-#if QT_VERSION >= QT_VERSION_CHECK(6, 4, 0)
+-	QPlatformBackingStoreRhiConfig rhiConfig() const override {
+-		const auto q = static_cast<TWidget*>(q_ptr);
+-		if (!q->testAttribute(Qt::WA_WState_Created)) {
+-			return QWidgetPrivate::rhiConfig();
+-		}
+-		if (const auto config = q->rhiConfig()) {
+-			return *config;
+-		}
+-		if (::Platform::IsMac10_14OrGreater()) {
+-			return { QPlatformBackingStoreRhiConfig::Metal };
+-		}
+-		// We can't specify the widget here as q_evaluateRhiConfig is called
+-		// in QWidgetWindow constructor, while windowHandle is set right after
+-		// the constructor is completed
+-		if (::Platform::IsWayland() // old versions of mutter produce flicker without OpenGL
+-			&& Ui::GL::ChooseBackendDefault(
+-					Ui::GL::CheckCapabilities(nullptr))
+-				== Ui::GL::Backend::OpenGL) {
+-			return { QPlatformBackingStoreRhiConfig::OpenGL };
+-		}
+-		return QWidgetPrivate::rhiConfig();
+-	}
+-#endif // Qt >= 6.4.0
+-};
+ 
+ TWidget::TWidget(QWidget *parent)
+-: TWidgetHelper<QWidget>(*(new TWidgetPrivate), parent, {}) {
++: TWidgetHelper<QWidget>(parent, {}) {
+ 	[[maybe_unused]] static const auto Once = [] {
+ 		auto format = QSurfaceFormat::defaultFormat();
+ 		format.setSwapInterval(0);
diff --git a/net-im/telegram-desktop/telegram-desktop-4.8.4-r2.ebuild b/net-im/telegram-desktop/telegram-desktop-4.8.4-r2.ebuild
new file mode 100644
index 000000000000..c58885293abd
--- /dev/null
+++ b/net-im/telegram-desktop/telegram-desktop-4.8.4-r2.ebuild
@@ -0,0 +1,227 @@
+# Copyright 2020-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{9..12} )
+
+inherit xdg cmake python-any-r1 optfeature flag-o-matic
+
+DESCRIPTION="Official desktop client for Telegram"
+HOMEPAGE="https://desktop.telegram.org"
+
+MY_P="tdesktop-${PV}-full"
+SRC_URI="https://github.com/telegramdesktop/tdesktop/releases/download/v${PV}/${MY_P}.tar.gz"
+S="${WORKDIR}/${MY_P}"
+
+LICENSE="BSD GPL-3-with-openssl-exception LGPL-2+"
+SLOT="0"
+KEYWORDS="~amd64 ~riscv"
+IUSE="enchant +fonts +jemalloc screencast qt6 qt6-imageformats wayland +X"
+REQUIRED_USE="
+	qt6-imageformats? ( qt6 )
+"
+
+KIMAGEFORMATS_RDEPEND="
+	media-libs/libavif:=
+	media-libs/libheif:=
+	media-libs/libjxl
+"
+RDEPEND="
+	!net-im/telegram-desktop-bin
+	app-arch/lz4:=
+	dev-cpp/abseil-cpp:=
+	>=dev-cpp/glibmm-2.76:2.68
+	dev-libs/glib:2
+	dev-libs/libdispatch
+	dev-libs/libsigc++:2
+	dev-libs/openssl:=
+	dev-libs/protobuf
+	dev-libs/xxhash
+	media-libs/fontconfig:=
+	media-libs/libjpeg-turbo:=
+	~media-libs/libtgvoip-2.4.4_p20221208
+	media-libs/openal
+	media-libs/opus
+	media-libs/rnnoise
+	~media-libs/tg_owt-0_pre20230428:=[screencast=,X=]
+	media-video/ffmpeg:=[opus,vpx]
+	sys-libs/zlib:=[minizip]
+	virtual/opengl
+	!enchant? ( >=app-text/hunspell-1.7:= )
+	enchant? ( app-text/enchant:= )
+	jemalloc? ( dev-libs/jemalloc:=[-lazy-lock] )
+	!qt6? (
+		>=dev-qt/qtcore-5.15:5
+		>=dev-qt/qtgui-5.15:5[dbus,jpeg,png,wayland?,X?]
+		>=dev-qt/qtimageformats-5.15:5
+		>=dev-qt/qtnetwork-5.15:5[ssl]
+		>=dev-qt/qtsvg-5.15:5
+		>=dev-qt/qtwidgets-5.15:5[png,X?]
+		kde-frameworks/kcoreaddons:=
+	)
+	qt6? (
+		dev-qt/qtbase:6[dbus,gui,network,opengl,widgets,X?]
+		dev-qt/qtimageformats:6
+		dev-qt/qtsvg:6
+		wayland? ( dev-qt/qtwayland:6 )
+		qt6-imageformats? (
+			dev-qt/qtimageformats:6=
+			${KIMAGEFORMATS_RDEPEND}
+		)
+	)
+	X? (
+		x11-libs/libxcb:=
+		x11-libs/xcb-util-keysyms
+	)
+"
+DEPEND="${RDEPEND}
+	dev-cpp/cppgir
+	>=dev-cpp/ms-gsl-4
+	dev-cpp/range-v3
+"
+BDEPEND="
+	${PYTHON_DEPS}
+	dev-cpp/cppgir
+	>=dev-util/cmake-3.16
+	dev-util/gdbus-codegen
+	virtual/pkgconfig
+"
+# dev-libs/jemalloc:=[-lazy-lock] -> https://bugs.gentoo.org/803233
+
+PATCHES=(
+	"${FILESDIR}/tdesktop-4.2.4-jemalloc-only-telegram-r1.patch"
+	"${FILESDIR}/tdesktop-4.8.4-system-cppgir.patch"
+	"${FILESDIR}/tdesktop-4.8.3-fix-clang.patch"
+	"${FILESDIR}/tdesktop-4.8.4-remove-private-qt.patch"
+)
+
+# Current desktop-file-utils-0.26 does not understand Version=1.5
+QA_DESKTOP_FILE="usr/share/applications/${PN}.desktop"
+
+pkg_pretend() {
+	if has ccache ${FEATURES}; then
+		ewarn "ccache does not work with ${PN} out of the box"
+		ewarn "due to usage of precompiled headers"
+		ewarn "check bug https://bugs.gentoo.org/715114 for more info"
+		ewarn
+	fi
+}
+
+pkg_setup() {
+	# Having inaccessible paths sneak into the build environment through the
+	# XDG_DATA_DIRS variable breaks cppgir.
+	# bug 909038
+	unset XDG_DATA_DIRS
+}
+
+src_prepare() {
+	# Bundle kde-frameworks/kimageformats for qt6, since it's impossible to
+	#   build in gentoo right now.
+	if use qt6-imageformats; then
+		sed -e 's/DESKTOP_APP_USE_PACKAGED_LAZY/TRUE/' -i \
+			cmake/external/kimageformats/CMakeLists.txt || die
+		printf '%s\n' \
+			'Q_IMPORT_PLUGIN(QAVIFPlugin)' \
+			'Q_IMPORT_PLUGIN(HEIFPlugin)' \
+			'Q_IMPORT_PLUGIN(QJpegXLPlugin)' \
+			>> cmake/external/qt/qt_static_plugins/qt_static_plugins.cpp || die
+	fi
+
+	# kde-frameworks/kcoreaddons is bundled when using qt6, see:
+	#   cmake/external/kcoreaddons/CMakeLists.txt
+
+	# Happily fail if libraries aren't found...
+	find -type f -name 'CMakeLists.txt' \
+		\! -path "./cmake/external/expected/CMakeLists.txt" \
+		-print0 | xargs -0 sed -i \
+		-e '/pkg_check_modules(/s/[^ ]*)/REQUIRED &/' \
+		-e '/find_package(/s/)/ REQUIRED)/' || die
+
+	cmake_src_prepare
+}
+
+src_configure() {
+	# The ABI of media-libs/tg_owt breaks if the -DNDEBUG flag doesn't keep
+	# the same state across both projects.
+	# See https://bugs.gentoo.org/866055
+	append-cppflags '-DNDEBUG'
+
+	local mycmakeargs=(
+		-DCMAKE_DISABLE_FIND_PACKAGE_tl-expected=ON  # header only lib, some git version. prevents warnings.
+		-DQT_VERSION_MAJOR=$(usex qt6 6 5)
+
+		-DDESKTOP_APP_DISABLE_X11_INTEGRATION=$(usex !X)
+		-DDESKTOP_APP_DISABLE_WAYLAND_INTEGRATION=$(usex !wayland)
+		-DDESKTOP_APP_DISABLE_JEMALLOC=$(usex !jemalloc)
+		-DDESKTOP_APP_USE_ENCHANT=$(usex enchant)  # enables enchant and disables hunspell
+		-DDESKTOP_APP_USE_PACKAGED_FONTS=$(usex !fonts)  # use system fonts instead of bundled ones
+	)
+
+	if [[ -n ${MY_TDESKTOP_API_ID} && -n ${MY_TDESKTOP_API_HASH} ]]; then
+		einfo "Found custom API credentials"
+		mycmakeargs+=(
+			-DTDESKTOP_API_ID="${MY_TDESKTOP_API_ID}"
+			-DTDESKTOP_API_HASH="${MY_TDESKTOP_API_HASH}"
+		)
+	else
+		# https://github.com/telegramdesktop/tdesktop/blob/dev/snap/snapcraft.yaml
+		# Building with snapcraft API credentials by default
+		# Custom API credentials can be obtained here:
+		# https://github.com/telegramdesktop/tdesktop/blob/dev/docs/api_credentials.md
+		# After getting credentials you can export variables:
+		#  export MY_TDESKTOP_API_ID="17349""
+		#  export MY_TDESKTOP_API_HASH="344583e45741c457fe1862106095a5eb"
+		# and restart the build"
+		# you can set above variables (without export) in /etc/portage/env/net-im/telegram-desktop
+		# portage will use custom variable every build automatically
+		mycmakeargs+=(
+			-DTDESKTOP_API_ID="611335"
+			-DTDESKTOP_API_HASH="d524b414d21f4d37f08684c1df41ac9c"
+		)
+	fi
+
+	cmake_src_configure
+}
+
+pkg_postinst() {
+	xdg_pkg_postinst
+	if ! use X && ! use screencast; then
+		ewarn "both the 'X' and 'screencast' USE flags are disabled, screen sharing won't work!"
+		ewarn
+	fi
+	if has_version '<dev-qt/qtcore-5.15.2-r10'; then
+		ewarn "Versions of dev-qt/qtcore lower than 5.15.2-r10 might cause telegram"
+		ewarn "to crash when pasting big images from the clipboard."
+		ewarn
+	fi
+	if ! use jemalloc && use elibc_glibc; then
+		# https://github.com/telegramdesktop/tdesktop/issues/16084
+		# https://github.com/desktop-app/cmake_helpers/pull/91#issuecomment-881788003
+		ewarn "Disabling USE=jemalloc on glibc systems may cause very high RAM usage!"
+		ewarn "Do NOT report issues about RAM usage without enabling this flag first."
+		ewarn
+	fi
+	if use qt6; then
+		ewarn "Qt6 support in gentoo is experimental."
+		ewarn "Please report any issues you may find, but don't expect"
+		ewarn "everything to work correctly as of yet."
+		ewarn
+	fi
+	if use wayland && ! use qt6; then
+		ewarn "Wayland-specific integrations have been deprecated with Qt5."
+		ewarn "The app will continue to function under wayland, but some"
+		ewarn "functionality may be reduced."
+		ewarn "These integrations are only supported when built with Qt6."
+		ewarn
+	fi
+	if use qt6 && ! use qt6-imageformats; then
+		elog "Enable USE=qt6-imageformats for AVIF, HEIF and JpegXL support"
+		elog
+	fi
+	optfeature_header
+	optfeature "shop payment support" net-libs/webkit-gtk:4
+	if ! use qt6; then
+		optfeature "AVIF, HEIF and JpegXL image support" kde-frameworks/kimageformats[avif,heif,jpegxl]
+	fi
+}