Add dev-qt from an older version of the gentoo repo

Qt5 has been removed, we restore it since we still use it.

dev-qt/qtwebchannel/Manifest

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+DIST qtwebchannel-everywhere-src-6.10.3.tar.xz 194048 BLAKE2B deaea865f7c6d09b8305e2135fc02955d8a6b9400e6a407180e0a45cbf3b07460bf3dd6b4e61bd923a72603b1a24f458049feaf9842d13c0a7a5d1f11766cadc SHA512 a7fc823d2a19dc200a32f1d58e08d1554f5721b6e684a12f7aa34ebd63e0a51f6620ab89e1c6f965c1a64b353b450b7adb9796e7d8af8870f1c189cfb64b76f5
+DIST qtwebchannel-everywhere-src-6.11.1.tar.xz 193204 BLAKE2B f85812c2d2211eb889ee6178577b5542228c8376382e6647a34d0486919f134be10feb277fc1e1642132aa7a6f2600916f29e0e94d6b0b0eb3e176b70ade7d77 SHA512 c19696139a0d7e45d7f9b09d30230393f91f7a806d227ced3ae76c4c1aab8a9d3fd8dcbaf5313264235b9ddff540319f37deef7fe81bbde10b3a51339da53ac7

dev-qt/qtwebchannel/metadata.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="project">
+		<email>qt@gentoo.org</email>
+		<name>Gentoo Qt Project</name>
+	</maintainer>
+	<use>
+		<flag name="qml">Build QML/QtQuick bindings and imports</flag>
+	</use>
+	<upstream>
+		<bugs-to>https://qt-project.atlassian.net/</bugs-to>
+		<doc>https://doc.qt.io/</doc>
+		<remote-id type="github">qt/qtwebchannel</remote-id>
+	</upstream>
+	<slots>
+		<subslots>
+			Must only be used by packages that are known to use private parts of the Qt API.
+		</subslots>
+	</slots>
+</pkgmetadata>

dev-qt/qtwebchannel/qtwebchannel-6.10.3.ebuild

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+# Copyright 2021-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit qt6-build
+
+DESCRIPTION="Qt WebChannel"
+
+if [[ ${QT6_BUILD_TYPE} == release ]]; then
+	KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv x86"
+fi
+
+IUSE="qml"
+
+RDEPEND="
+	~dev-qt/qtbase-${PV}:6[concurrent]
+	qml? ( ~dev-qt/qtdeclarative-${PV}:6 )
+"
+DEPEND="${RDEPEND}"
+
+src_configure() {
+	has_version "=dev-qt/qtdeclarative-$(ver_cut 1-3)*:6" && #913692
+		local mycmakeargs=( $(cmake_use_find_package qml Qt6Qml) )
+
+	qt6-build_src_configure
+}

dev-qt/qtwebchannel/qtwebchannel-6.11.1.ebuild

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+# Copyright 2021-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit qt6-build
+
+DESCRIPTION="Qt WebChannel"
+
+if [[ ${QT6_BUILD_TYPE} == release ]]; then
+	KEYWORDS="amd64 arm arm64 ~loong ppc ppc64 ~riscv x86"
+fi
+
+IUSE="qml"
+
+RDEPEND="
+	~dev-qt/qtbase-${PV}:6[concurrent]
+	qml? ( ~dev-qt/qtdeclarative-${PV}:6 )
+"
+DEPEND="${RDEPEND}"
+
+src_configure() {
+	has_version "=dev-qt/qtdeclarative-$(ver_cut 1-3)*:6" && #913692
+		local mycmakeargs=( $(cmake_use_find_package qml Qt6Qml) )
+
+	qt6-build_src_configure
+}

dev-qt/qtwebchannel/qtwebchannel-6.11.9999.ebuild

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+# Copyright 2021-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit qt6-build
+
+DESCRIPTION="Qt WebChannel"
+
+if [[ ${QT6_BUILD_TYPE} == release ]]; then
+	KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~x86"
+fi
+
+IUSE="qml"
+
+RDEPEND="
+	~dev-qt/qtbase-${PV}:6[concurrent]
+	qml? ( ~dev-qt/qtdeclarative-${PV}:6 )
+"
+DEPEND="${RDEPEND}"
+
+src_configure() {
+	has_version "=dev-qt/qtdeclarative-$(ver_cut 1-3)*:6" && #913692
+		local mycmakeargs=( $(cmake_use_find_package qml Qt6Qml) )
+
+	qt6-build_src_configure
+}

dev-qt/qtwebchannel/qtwebchannel-6.12.9999.ebuild

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+# Copyright 2021-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit qt6-build
+
+DESCRIPTION="Qt WebChannel"
+
+if [[ ${QT6_BUILD_TYPE} == release ]]; then
+	KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~x86"
+fi
+
+IUSE="qml"
+
+RDEPEND="
+	~dev-qt/qtbase-${PV}:6[concurrent]
+	qml? ( ~dev-qt/qtdeclarative-${PV}:6 )
+"
+DEPEND="${RDEPEND}"
+
+src_configure() {
+	has_version "=dev-qt/qtdeclarative-$(ver_cut 1-3)*:6" && #913692
+		local mycmakeargs=( $(cmake_use_find_package qml Qt6Qml) )
+
+	qt6-build_src_configure
+}

dev-qt/qtwebchannel/qtwebchannel-6.9999.ebuild

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+# Copyright 2021-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit qt6-build
+
+DESCRIPTION="Qt WebChannel"
+
+if [[ ${QT6_BUILD_TYPE} == release ]]; then
+	KEYWORDS="~amd64 ~arm ~arm64 ~loong ~ppc ~ppc64 ~riscv ~x86"
+fi
+
+IUSE="qml"
+
+RDEPEND="
+	~dev-qt/qtbase-${PV}:6[concurrent]
+	qml? ( ~dev-qt/qtdeclarative-${PV}:6 )
+"
+DEPEND="${RDEPEND}"
+
+src_configure() {
+	has_version "=dev-qt/qtdeclarative-$(ver_cut 1-3)*:6" && #913692
+		local mycmakeargs=( $(cmake_use_find_package qml Qt6Qml) )
+
+	qt6-build_src_configure
+}