mail-client/thunderbird: add 128.2.2

 - add new experimental use flag 'rust-extensions' for now.

Closes: https://bugs.gentoo.org/939804
Signed-off-by: Joonas Niilola <juippis@gentoo.org>

3 files changed, 1259 insertions, 0 deletions

diff --git a/mail-client/thunderbird/Manifest b/mail-client/thunderbird/Manifest
index 8bae87e7b3c0..5a2121fc146f 100644
--- a/mail-client/thunderbird/Manifest
+++ b/mail-client/thunderbird/Manifest
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 DIST thunderbird-128.2.1-zh-CN.xpi 785328 BLAKE2B c0074053890028a8888e04fbc803337888715f9004b44823af4d6dcecfe6de70b8e8c5d45ca234d7ce4276bdd6e68d38e74866b9bc8da345b490b1dcbb870e28 SHA512 641c7296e86a859061116e7b5c9f0077d6dc02e1c81212c21ce0247e9e92a88f3d7fa2be307f717e6f95077c29c236487dc8fd93d7f9795aba569e36f9f5f1dc
 DIST thunderbird-128.2.1-zh-TW.xpi 789780 BLAKE2B 26dd81ab3b1066b0e4e1fb94d7d1f0a6241a94420fdd34fcea42f841c6f86109a7d53e422ada0378b865998d7946bea315051e1df47f04e278840db4d94a752b SHA512 6e8c435ed7f07b1dd1b201730049aeb924a7b1b44ae2fa9ed1a209e7862abd0316845c929fea24f73e43262f147b7e092bfe26ed7f3d2914c09bc60f160ccd98
 DIST thunderbird-128.2.1esr.source.tar.xz 672402456 BLAKE2B 0a082fc46148162979c55da1e43d4592b1f012c01d227444f3157824a66dc7035cf81d9f200c834f62226415f52c550888bfee70eabea8c4765addef6409d3d3 SHA512 8a04c57f7c4c8f19ca3aa5f62a65fe05944a8425e074ff49ff087c542bb64091666078ed0b887528d2662d92e65f7a00a5fad98e7897d2f1e1def963923523f0
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+DIST thunderbird-128.2.2-lt.xpi 700917 BLAKE2B 82ee9103889b2e7b8625b7646f8436a8c5b12a45237c7203d8d3a33b0d205bdad0e992e58582c0ee43570f4a601f69a3def5149e4f6443e72159b1e267cf3f3b SHA512 fca2e33a1fbe684efbd96b6f74b2d811c329fabc7ebff26fa9152b36bf316851e8390537d05255dee0e1c5e47ad2336036b76526573791d7ece6c127e2feb538
+DIST thunderbird-128.2.2-lv.xpi 623624 BLAKE2B b537c537dfdcc03d68737aeaa2fc13482b9f57ce5646a444bff7e788abbb02d5f4c7c399b467d83b2684de28b597a1b4223c8889a3b6906bfd32ce0a2fe5e538 SHA512 4b9f301ba9ede84aafc5518a8650d48469ad79826ddb5303a0df433f4b10d268f47ccde0492fc0ac9aac9e03f10ba3524962841ddabf7ff304398fdf309fd154
+DIST thunderbird-128.2.2-ms.xpi 581083 BLAKE2B 6906fa8c3abf7539eb3569139bf615f9f6bfc2933a82bc15f31c73dd85c689b35f0fe1f6f02d8894541733ff69072fcb7b4701c67b0b395dff6bf02e71419d6c SHA512 3e1807a9f3b0396ac79981f4104bba73d0b1357c8e8dedd67b06703144f419059c5c104a2d0030b16fce15aa55923e2f0efedcad5f080375a7713f362301a184
+DIST thunderbird-128.2.2-nb-NO.xpi 703762 BLAKE2B 5dc2fdbe2368cb1481e470b347abe248d968f0dd7bf4374ef2b4f719e746619b49f721f0c03f5d01341db8d8d72e48511b58b693c0438f80603d1f7ddd4dbbdd SHA512 a6732fceea73299362855bd4fca683f0944b3955f9668aa369932ec8e8bb39cf1f8e8a011ee103c5f642e0e22310ee3a7b422d773b705bec04fe1f81fe71131b
+DIST thunderbird-128.2.2-nl.xpi 744105 BLAKE2B de180ebeaa93a970e4e2caa315531dd3a33bbd2868ed0281c084f4a369cf8f7e5aea0e3bf34e3a5283bfad4f904fee0db9d0bce91b5230e96bc209dbbd4a388b SHA512 fb978ad3fc6e70b117fac9aacb0377d7e488d8a8891ccebaae6fe845edb1c87bf05a6286a764343707bf44bbbb29b6b62cfaebc18d90308838eee3c5cfeeef91
+DIST thunderbird-128.2.2-nn-NO.xpi 723767 BLAKE2B ea5f20c8e761796d18e0e08c1a7c3b8ffd04afca6b08445c98faae9cb37c0f53819cfa43ae264d31ebdcc02cc658a3e8163c2096c6a3aec4b64d04c96cb73eee SHA512 d0d5f91c1d3563cf61f86bb0f58c9dd91ffa9809db112fa2114ed8b938c64cab76c14be04b94b794bd07e07b91755bb6e8cbd8efc089dab52bcb1d0720b1acce
+DIST thunderbird-128.2.2-pa-IN.xpi 683077 BLAKE2B fdffb7bded96a4a2b156392bb72f0dca89bd8c3835b5bbcb9a811a311a4dfb0df0274ba0ce99f3427d8744b3734f0f4c53dd74bd4d1416a4bf085cfc495dcfcc SHA512 a536b95560e84affb3d67173773a0b0a69053dcebe2abc9dc4c05469f7895fe31977a4bd3e3c22870d191882546e1168518c7444c1baf2153e7556b6f88815ca
+DIST thunderbird-128.2.2-pl.xpi 762951 BLAKE2B b130f1fb22fd05fe58cee3ee470d40358e490767df5ec3ce278fe91edfb5775b7170d2ea11525389f6fc141961bca3256408b0fadf222a59ffcd779ad05acae3 SHA512 8d008eb7b0723c6d8fea007a926e2b5b929d65fcac5c4009ec4cb7e7927af79eb5f5e62c14b4e0d9ce3b310a67155857c0c36649842b0ff259bfb9ea7dae43d4
+DIST thunderbird-128.2.2-pt-BR.xpi 751312 BLAKE2B 532ab4de97a86d7ef08457af3a6254db0c13b35739c3dc43d439d8dbe66ab0496447b4ea2bb90216c73451f716cf3bdcd70639b2a179f65ab6693a99f55f5c7e SHA512 5b9ccc6efffe4d096fe8a011ccf0ed0d75801ba6fbde7448d61d86c67445a81fde037332f962b7a8718f07f15c540ae11584911f007a335f37dd6c370a16b8bf
+DIST thunderbird-128.2.2-pt-PT.xpi 746870 BLAKE2B f17c0e3065d028b7c9798d4b0a1f2915817bd51c20780e4884156c6464f3fb3fb26bb44e59285a403287055a4cb8689d08d0d46c363207c4998c1b79f2ca091f SHA512 5d212f4ad1829206c99c269e440142274288470e997b362ffb8a2f22081858d44be8432ea2bedca5f6ca31c02bbd31e0559e8e562bfe83ac4b69eeaa23a4019d
+DIST thunderbird-128.2.2-rm.xpi 746779 BLAKE2B 57ed03115b45eeeca524d359915e604766ec1fc6a572cdddf792c81f5683c5211c97cef4466aeb70fdbec11b8b64b163d4b11c0db9e4eba40deb9c512e06407b SHA512 44f8ab9bcf893ef4f6fbfa9c549b7c0dd84e87bb6c8c35fc8257a04b449c19e55c38a3d0e3321e938aaf29dd61d0636384390c8ec20b276755b0a83b70875bfa
+DIST thunderbird-128.2.2-ro.xpi 669742 BLAKE2B c8a3351698503cd460a94147ab145eca308a598ce151bfc19d696f5d0b8bf59f91a54c26a338d0c1db88cac673071bad71814d99a583d6d1a0575148b22da410 SHA512 affab7161952ef70aa8f6147e048b9209ab9996de1416e8c645726ceda9ec694a46a95e91fb4da3de7bef95ef9d7f9a2fb5c0e0cc1c20cf440b1b09e4eae8582
+DIST thunderbird-128.2.2-ru.xpi 872245 BLAKE2B 97afe1df85d1f3870ff50af4a2c8756a6ae00b0e21990fe80e0ef3df7d6c65106eb317a5faa8b97c496e7a7230c8d021dd677e957e00caf1de644e8571fa207b SHA512 5fa1e5810cd442a8a95b29c4e1f6e0a5c447d4ac43ca8b3de3cd21aa3ff215e281a7c73ab85309b261274578b99f52b95e60abbda876f434adf91be3860ab2bf
+DIST thunderbird-128.2.2-sk.xpi 784168 BLAKE2B 0604012ee5bd5101cad8cac6727c61680993ca307ff49af10fc162d760095453a7c642aa8bb77a13c34fcf28c7e290d286efe4e4104e9d9d83a5aa0f05099ce3 SHA512 028d4c99b393bcd245d02cd0e97c98dcc20bdd153a08afd623de06579d9ff71108997840a757c84c6abab322ed20cc5c87a5dc273823ddc6610d74f268b08241
+DIST thunderbird-128.2.2-sl.xpi 743551 BLAKE2B da17cc1ce9d00f3ed713f0fed9a5825848b008eb359b905b894d2e0d9398c4d678bf329094ba98b0348962bdf87315b3f35917f5c136a1f6b99a53f19f7b1a51 SHA512 c505cc60ea3fe60ef1a0a252e99ef3aec14eed535b181c2f2ba21e607a7c41ec7dd37f9afeae7d7ca2e7ed0486908ee019b7397c3eb1d1ab0ba69a2132950ef1
+DIST thunderbird-128.2.2-sq.xpi 765885 BLAKE2B 0cfa9eb328f260dcad69784cd2d6502d01b5fee740a73022363e770fd1bc06572a1ddeaf308b5381a39d7b391746c8dcd4019d763df6d001a13dbf45d720b9de SHA512 956daefdf678b71adb87fe64e8004382a47e2fcfbebc9552bb0c3d83871347fe77e13bc9dc1a4220c124357bb6121392b58168f12f178c88c0c40009218e6ba5
+DIST thunderbird-128.2.2-sr.xpi 771005 BLAKE2B f7ba13aafe1e6042494650d2b5172bf788e04f3919491d5f19e542f5d4fc6090bc89ea1b89e4cc7fd1370b9194c2799544b3bfabbb88df03ed03782075788d6f SHA512 6813b47cb79ceed6f376238480488f3ef2c388775bcf2cebe77dba4b9af4cfa6205219a3850635eddc9f3a363df65f63435b42e6a3afebe33b1816bdb5b21c15
+DIST thunderbird-128.2.2-sv-SE.xpi 747521 BLAKE2B f6ea783938e5c2cfbf6d0b1c1020b1ed45df1a55655a6886c70b9d24250cf920bf9e95233878ff3e832b9ccdbcb6ec69f7a7a59737de7b908dea21579aa10a4c SHA512 9f93d3180d2b64ab5dc6682a74a9a2d38acc0274733940e51a257a87903e0375093b25e3189673786473f1553047cdfededdf3728266cbb2dfaf52a2dfe6e76e
+DIST thunderbird-128.2.2-th.xpi 813953 BLAKE2B 2eca50868dd09e7d8576da9cc5f204fc816a7ef3fd459ea6260e429905e7d6c9768cbd8f7b26817a23d6b64699164c6c604d5d06939c01a9ed743015d83f38bd SHA512 490ece4ddb5ed2155084ee3d2fe54a2d216f5622eb55088b399e92da55ff598836e787a1dffc638122f3c80de0c35214121bd84884d25c51a3b83b3288f77893
+DIST thunderbird-128.2.2-tr.xpi 758165 BLAKE2B 9e502939d4ed61372e0e16df5ee1a30d0c89caccc1edf8a0778baf8f01f1a37dca4408d081332cf74b2c74c683273de070675fc85044704e69fae6991502bb70 SHA512 232e52755661a339650a76b701610cc136c7a7e5b11788afdf470e18ebd13a3befa7464ab073579bf7a7b7b340a82ceb9328df93e8995b2356c87a55b8110a1e
+DIST thunderbird-128.2.2-uk.xpi 856053 BLAKE2B 7530213593db5e282dd54e2f5f1f26b982f1a3d01d206676f9f8641c7ecfa54f126e5b095ef6c528482eedb1e949aab5696a67b4883d760c9393d079076a9a45 SHA512 02072a6eeb9f03a71cae1f7ef4de4272aa677657b1cc8ed1c28badc713510c9d53c6029e3647817769fdd79caed735373263d0150c4c5ae6997479cd0291c64e
+DIST thunderbird-128.2.2-uz.xpi 592131 BLAKE2B 569538d472409a3ac52a4891c07446220d2d9795c1e2a51afc15604814b19ad3833fb16a7f46958bebd89fb8f47958647f56321105612954216b8c0caa3f7f1b SHA512 415f903c63ffc47a9d6463ac41a2b842164497377fe9ac225875b8f3babb3c798b988ee40b5cd609cc2559eee96c2b19d91e51d8df36381cbdd2a1ecf892ccbb
+DIST thunderbird-128.2.2-vi.xpi 787028 BLAKE2B c9fb95cbd3055b58f38d8e166eb64899ac3cfda96fb223dcecf70123b21781d607c5ba552b177f91edcc9af9e378ce799b9497e740b19d5a9e8f4e7b6daec995 SHA512 4cb791209a31f87a481085fe8925b470f51ae4ba357a415bbfb01f974bad4080c61edeaf3805c5544636376ccd85470e26e24c7477a1a6436944b4a2072fd28b
+DIST thunderbird-128.2.2-zh-CN.xpi 785327 BLAKE2B 095094bc0b01974406837e776d263b96c85699123f7c5bb6cd9126e5da03c5320eaafac24344205b49a463a8b1729121f73882734aedd723ad43178ba24f0bf8 SHA512 345bba000b277941423af0f3f47763208a565a408c99a6a8ff5619d3d5a91a8c5c18d867d667f6ecdc2f56dad4007ccd2f75cff113bb7eb294f3ee2d9b8d1def
+DIST thunderbird-128.2.2-zh-TW.xpi 789780 BLAKE2B 1e1d95617c86fbcc00804dd18dcad0cc1b876ba09a2162696d14075e4814810aadc24e2124b25df935f380171a6dd1a95ec679b28ea509aeeb27d99b3a1e5950 SHA512 0b650d6c00a0dc05119e20b4d072124c98e70f70a7b98f05644e344fe952b8992d9aa5ea0f320e0f13c3c80e07e8a23f3160e4443510c139ebeedf2eb7778d1f
+DIST thunderbird-128.2.2esr.source.tar.xz 676994144 BLAKE2B e3eec7d15b4d855376ef1aa9ae2de490134a156f8ca817fbb88d6a942a567692656235ed3bf3cd11e6846b033a4ae56cdfaacde8365ac1d1facb2f41f4abf30b SHA512 6300f3f6d3a907e849a6acf06101d7441680a4eab965955887ac829886d4f2152e49a0ca97255e3cd9de579fea9ff5c03f75c70a361116a66c735face885ab89
diff --git a/mail-client/thunderbird/metadata.xml b/mail-client/thunderbird/metadata.xml
index 51a24c64cf6b..27ca960df2ea 100644
--- a/mail-client/thunderbird/metadata.xml
+++ b/mail-client/thunderbird/metadata.xml
@@ -16,6 +16,8 @@
 		for faster binaries. This option will double the compile time.</flag>
 	<flag name="pulseaudio">Add sound server support via media-libs/libpulse (may be PulseAudio or
 		Pipewire, or apulse if installed)</flag>
+	<flag name="rust-extensions">Compile and install experimental rust extensions, that may become
+		part of Thunderbird some day.</flag>
 	<flag name="sndio">Enable support for the <pkg>media-sound/sndio</pkg> backend</flag>
 	<flag name="system-av1">Use the system-wide <pkg>media-libs/dav1d</pkg>
 		and <pkg>media-libs/libaom</pkg> library instead of bundled.</flag>
diff --git a/mail-client/thunderbird/thunderbird-128.2.2.ebuild b/mail-client/thunderbird/thunderbird-128.2.2.ebuild
new file mode 100644
index 000000000000..60072a4b830e
--- /dev/null
+++ b/mail-client/thunderbird/thunderbird-128.2.2.ebuild
@@ -0,0 +1,1192 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+FIREFOX_PATCHSET="firefox-128esr-patches-03.tar.xz"
+
+LLVM_COMPAT=( 17 18 )
+
+PYTHON_COMPAT=( python3_{10..12} )
+PYTHON_REQ_USE="ncurses,sqlite,ssl"
+
+WANT_AUTOCONF="2.1"
+
+VIRTUALX_REQUIRED="manual"
+
+MOZ_ESR=
+
+MOZ_PV=${PV}
+MOZ_PV_SUFFIX=
+if [[ ${PV} =~ (_(alpha|beta|rc).*)$ ]] ; then
+	MOZ_PV_SUFFIX=${BASH_REMATCH[1]}
+
+	# Convert the ebuild version to the upstream Mozilla version
+	MOZ_PV="${MOZ_PV/_alpha/a}" # Handle alpha for SRC_URI
+	MOZ_PV="${MOZ_PV/_beta/b}"  # Handle beta for SRC_URI
+	MOZ_PV="${MOZ_PV%%_rc*}"    # Handle rc for SRC_URI
+fi
+
+if [[ -n ${MOZ_ESR} ]] ; then
+	# ESR releases have slightly different version numbers
+	MOZ_PV="${MOZ_PV}esr"
+fi
+
+MOZ_PN="${PN%-bin}"
+MOZ_P="${MOZ_PN}-${MOZ_PV}"
+MOZ_PV_DISTFILES="${MOZ_PV}${MOZ_PV_SUFFIX}"
+MOZ_P_DISTFILES="${MOZ_PN}-${MOZ_PV_DISTFILES}"
+
+inherit autotools check-reqs desktop flag-o-matic gnome2-utils linux-info llvm-r1 multiprocessing \
+	optfeature pax-utils python-any-r1 toolchain-funcs virtualx xdg
+
+MOZ_SRC_BASE_URI="https://archive.mozilla.org/pub/${MOZ_PN}/releases/${MOZ_PV}esr"
+
+if [[ ${PV} == *_rc* ]] ; then
+	MOZ_SRC_BASE_URI="https://archive.mozilla.org/pub/${MOZ_PN}/candidates/${MOZ_PV}esr-candidates/build${PV##*_rc}"
+fi
+
+PATCH_URIS=(
+	https://dev.gentoo.org/~juippis/mozilla/patchsets/${FIREFOX_PATCHSET}
+)
+
+SRC_URI="${MOZ_SRC_BASE_URI}/source/${MOZ_P}esr.source.tar.xz -> ${MOZ_P_DISTFILES}esr.source.tar.xz
+	${PATCH_URIS[@]}"
+
+DESCRIPTION="Thunderbird Mail Client"
+HOMEPAGE="https://www.thunderbird.net/"
+
+KEYWORDS="~amd64 ~arm64 ~ppc64 ~x86"
+
+SLOT="0"
+LICENSE="MPL-2.0 GPL-2 LGPL-2.1"
+
+IUSE="+clang dbus debug eme-free hardened hwaccel jack libproxy lto +openh264 pgo pulseaudio sndio"
+IUSE+=" selinux +system-av1 +system-harfbuzz +system-icu +system-jpeg +system-libevent"
+IUSE+=" +system-libvpx system-png +system-webp wayland wifi +X"
+
+# Thunderbird-only USE flags.
+IUSE+=" +rust-extensions +system-librnp"
+
+REQUIRED_USE="|| ( X wayland )
+	debug? ( !system-av1 )
+	pgo? ( lto )
+	rust-extensions? ( dbus )
+	wayland? ( dbus )
+	wifi? ( dbus )"
+
+TB_ONLY_DEPEND="selinux? ( sec-policy/selinux-thunderbird )
+	!system-librnp? ( dev-libs/jsoncpp )
+	system-librnp? ( >=dev-util/librnp-0.17.1 )"
+BDEPEND="${PYTHON_DEPS}
+	$(llvm_gen_dep '
+		sys-devel/clang:${LLVM_SLOT}
+		sys-devel/llvm:${LLVM_SLOT}
+		clang? (
+			sys-devel/lld:${LLVM_SLOT}
+			virtual/rust:0/llvm-${LLVM_SLOT}
+			pgo? ( sys-libs/compiler-rt-sanitizers:${LLVM_SLOT}[profile] )
+		)
+	')
+	app-alternatives/awk
+	app-arch/unzip
+	app-arch/zip
+	>=dev-util/cbindgen-0.26.0
+	net-libs/nodejs
+	virtual/pkgconfig
+	!clang? ( >=virtual/rust-1.76 )
+	!elibc_glibc? ( dev-lang/rust )
+	amd64? ( >=dev-lang/nasm-2.14 )
+	x86? ( >=dev-lang/nasm-2.14 )
+	pgo? (
+		X? (
+			sys-devel/gettext
+			x11-base/xorg-server[xvfb]
+			x11-apps/xhost
+		)
+		!X? (
+			|| (
+				gui-wm/tinywl
+				<gui-libs/wlroots-0.17.3[tinywl(-)]
+			)
+			x11-misc/xkeyboard-config
+		)
+	)"
+COMMON_DEPEND="${TB_ONLY_DEPEND}
+	>=app-accessibility/at-spi2-core-2.46.0:2
+	dev-libs/expat
+	dev-libs/glib:2
+	dev-libs/libffi:=
+	>=dev-libs/nss-3.101
+	>=dev-libs/nspr-4.35
+	media-libs/alsa-lib
+	media-libs/fontconfig
+	media-libs/freetype
+	media-libs/mesa
+	media-video/ffmpeg
+	sys-libs/zlib
+	virtual/freedesktop-icon-theme
+	x11-libs/cairo
+	x11-libs/gdk-pixbuf:2
+	x11-libs/pango
+	x11-libs/pixman
+	dbus? ( sys-apps/dbus )
+	jack? ( virtual/jack )
+	pulseaudio? (
+		|| (
+			media-libs/libpulse
+			>=media-sound/apulse-0.1.12-r4[sdk]
+		)
+	)
+	libproxy? ( net-libs/libproxy )
+	selinux? ( sec-policy/selinux-mozilla )
+	sndio? ( >=media-sound/sndio-1.8.0-r1 )
+	system-av1? (
+		>=media-libs/dav1d-1.0.0:=
+		>=media-libs/libaom-1.0.0:=
+	)
+	system-harfbuzz? (
+		>=media-gfx/graphite2-1.3.13
+		>=media-libs/harfbuzz-2.8.1:0=
+	)
+	system-icu? ( >=dev-libs/icu-74.1:= )
+	system-jpeg? ( >=media-libs/libjpeg-turbo-1.2.1:= )
+	system-libevent? ( >=dev-libs/libevent-2.1.12:0=[threads(+)] )
+	system-libvpx? ( >=media-libs/libvpx-1.8.2:0=[postproc] )
+	system-png? ( >=media-libs/libpng-1.6.35:0=[apng] )
+	system-webp? ( >=media-libs/libwebp-1.1.0:0= )
+	wayland? (
+		>=media-libs/libepoxy-1.5.10-r1
+		x11-libs/gtk+:3[wayland]
+	)
+	wifi? (
+		kernel_linux? (
+			|| (
+				net-misc/networkmanager
+				net-misc/connman[networkmanager]
+			)
+			sys-apps/dbus
+		)
+	)
+	X? (
+		virtual/opengl
+		x11-libs/cairo[X]
+		x11-libs/gtk+:3[X]
+		x11-libs/libX11
+		x11-libs/libXcomposite
+		x11-libs/libXdamage
+		x11-libs/libXext
+		x11-libs/libXfixes
+		x11-libs/libXrandr
+		x11-libs/libxcb:=
+	)"
+RDEPEND="${COMMON_DEPEND}
+	jack? ( virtual/jack )
+	openh264? ( media-libs/openh264:*[plugin] )"
+DEPEND="${COMMON_DEPEND}
+	X? (
+		x11-base/xorg-proto
+		x11-libs/libICE
+		x11-libs/libSM
+	)"
+
+S="${WORKDIR}/${PN}-${PV%_*}"
+
+llvm_check_deps() {
+	if ! has_version -b "sys-devel/clang:${LLVM_SLOT}" ; then
+		einfo "sys-devel/clang:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+		return 1
+	fi
+
+	if use clang && ! tc-ld-is-mold ; then
+		if ! has_version -b "sys-devel/lld:${LLVM_SLOT}" ; then
+			einfo "sys-devel/lld:${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+			return 1
+		fi
+
+		if ! has_version -b "virtual/rust:0/llvm-${LLVM_SLOT}" ; then
+			einfo "virtual/rust:0/llvm-${LLVM_SLOT} is missing! Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+			return 1
+		fi
+
+		if use pgo ; then
+			if ! has_version -b "=sys-libs/compiler-rt-sanitizers-${LLVM_SLOT}*[profile]" ; then
+				einfo "=sys-libs/compiler-rt-sanitizers-${LLVM_SLOT}*[profile] is missing!" >&2
+				einfo "Cannot use LLVM slot ${LLVM_SLOT} ..." >&2
+				return 1
+			fi
+		fi
+	fi
+
+	einfo "Using LLVM slot ${LLVM_SLOT} to build" >&2
+}
+
+MOZ_LANGS=(
+	af ar ast be bg br ca cak cs cy da de dsb
+	el en-CA en-GB en-US es-AR es-ES es-MX et eu
+	fi fr fy-NL ga-IE gd gl he hr hsb hu
+	id is it ja ka kab kk ko lt lv ms nb-NO nl nn-NO
+	pa-IN pl pt-BR pt-PT rm ro ru
+	sk sl sq sr sv-SE th tr uk uz vi zh-CN zh-TW
+)
+
+mozilla_set_globals() {
+	# https://bugs.gentoo.org/587334
+	local MOZ_TOO_REGIONALIZED_FOR_L10N=(
+		fy-NL ga-IE gu-IN hi-IN hy-AM nb-NO ne-NP nn-NO pa-IN sv-SE
+	)
+
+	local lang xflag
+	for lang in "${MOZ_LANGS[@]}" ; do
+		# en and en_US are handled internally
+		if [[ ${lang} == en ]] || [[ ${lang} == en-US ]] ; then
+			continue
+		fi
+
+		# strip region subtag if $lang is in the list
+		if has ${lang} "${MOZ_TOO_REGIONALIZED_FOR_L10N[@]}" ; then
+			xflag=${lang%%-*}
+		else
+			xflag=${lang}
+		fi
+
+		SRC_URI+=" l10n_${xflag/[_@]/-}? ("
+		SRC_URI+=" ${MOZ_SRC_BASE_URI}/linux-x86_64/xpi/${lang}.xpi -> ${MOZ_P_DISTFILES}-${lang}.xpi"
+		SRC_URI+=" )"
+		IUSE+=" l10n_${xflag/[_@]/-}"
+	done
+}
+mozilla_set_globals
+
+moz_clear_vendor_checksums() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -ne 1 ]] ; then
+		die "${FUNCNAME} requires exact one argument"
+	fi
+
+	einfo "Clearing cargo checksums for ${1} ..."
+
+	sed -i \
+		-e 's/\("files":{\)[^}]*/\1/' \
+		"${S}"/third_party/rust/${1}/.cargo-checksum.json || die
+}
+
+moz_install_xpi() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 2 ]] ; then
+		die "${FUNCNAME} requires at least two arguments"
+	fi
+
+	local DESTDIR=${1}
+	shift
+
+	insinto "${DESTDIR}"
+
+	local emid xpi_file xpi_tmp_dir
+	for xpi_file in "${@}" ; do
+		emid=
+		xpi_tmp_dir=$(mktemp -d --tmpdir="${T}")
+
+		# Unpack XPI
+		unzip -qq "${xpi_file}" -d "${xpi_tmp_dir}" || die
+
+		# Determine extension ID
+		if [[ -f "${xpi_tmp_dir}/install.rdf" ]] ; then
+			emid=$(sed -n -e '/install-manifest/,$ { /em:id/!d; s/.*[\">]\([^\"<>]*\)[\"<].*/\1/; p; q }' "${xpi_tmp_dir}/install.rdf")
+			[[ -z "${emid}" ]] && die "failed to determine extension id from install.rdf"
+		elif [[ -f "${xpi_tmp_dir}/manifest.json" ]] ; then
+			emid=$(sed -n -e 's/.*"id": "\([^"]*\)".*/\1/p' "${xpi_tmp_dir}/manifest.json")
+			[[ -z "${emid}" ]] && die "failed to determine extension id from manifest.json"
+		else
+			die "failed to determine extension id"
+		fi
+
+		einfo "Installing ${emid}.xpi into ${ED}${DESTDIR} ..."
+		newins "${xpi_file}" "${emid}.xpi"
+	done
+}
+
+mozconfig_add_options_ac() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 2 ]] ; then
+		die "${FUNCNAME} requires at least two arguments"
+	fi
+
+	local reason=${1}
+	shift
+
+	local option
+	for option in ${@} ; do
+		echo "ac_add_options ${option} # ${reason}" >>${MOZCONFIG}
+	done
+}
+
+mozconfig_add_options_mk() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 2 ]] ; then
+		die "${FUNCNAME} requires at least two arguments"
+	fi
+
+	local reason=${1}
+	shift
+
+	local option
+	for option in ${@} ; do
+		echo "mk_add_options ${option} # ${reason}" >>${MOZCONFIG}
+	done
+}
+
+mozconfig_use_enable() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 1 ]] ; then
+		die "${FUNCNAME} requires at least one arguments"
+	fi
+
+	local flag=$(use_enable "${@}")
+	mozconfig_add_options_ac "$(use ${1} && echo +${1} || echo -${1})" "${flag}"
+}
+
+mozconfig_use_with() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	if [[ ${#} -lt 1 ]] ; then
+		die "${FUNCNAME} requires at least one arguments"
+	fi
+
+	local flag=$(use_with "${@}")
+	mozconfig_add_options_ac "$(use ${1} && echo +${1} || echo -${1})" "${flag}"
+}
+
+virtwl() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	[[ $# -lt 1 ]] && die "${FUNCNAME} needs at least one argument"
+	[[ -n $XDG_RUNTIME_DIR ]] || die "${FUNCNAME} needs XDG_RUNTIME_DIR to be set; try xdg_environment_reset"
+	tinywl -h >/dev/null || die 'tinywl -h failed'
+
+	local VIRTWL VIRTWL_PID
+	coproc VIRTWL { WLR_BACKENDS=headless exec tinywl -s 'echo $WAYLAND_DISPLAY; read _; kill $PPID'; }
+	local -x WAYLAND_DISPLAY
+	read WAYLAND_DISPLAY <&${VIRTWL[0]}
+
+	debug-print "${FUNCNAME}: $@"
+	"$@"
+	local r=$?
+
+	[[ -n $VIRTWL_PID ]] || die "tinywl exited unexpectedly"
+	exec {VIRTWL[0]}<&- {VIRTWL[1]}>&-
+	return $r
+}
+
+pkg_pretend() {
+	if [[ ${MERGE_TYPE} != binary ]] ; then
+		if use pgo ; then
+			if ! has usersandbox $FEATURES ; then
+				die "You must enable usersandbox as X server can not run as root!"
+			fi
+		fi
+
+		# Ensure we have enough disk space to compile
+		if use pgo || use lto || use debug ; then
+			CHECKREQS_DISK_BUILD="13500M"
+		else
+			CHECKREQS_DISK_BUILD="6600M"
+		fi
+
+		check-reqs_pkg_pretend
+	fi
+}
+
+pkg_setup() {
+	if [[ ${MERGE_TYPE} != binary ]] ; then
+		if use pgo ; then
+			if ! has userpriv ${FEATURES} ; then
+				eerror "Building ${PN} with USE=pgo and FEATURES=-userpriv is not supported!"
+			fi
+		fi
+
+		# Ensure we have enough disk space to compile
+		if use pgo || use lto || use debug ; then
+			CHECKREQS_DISK_BUILD="13500M"
+		else
+			CHECKREQS_DISK_BUILD="6400M"
+		fi
+
+		check-reqs_pkg_setup
+
+		llvm-r1_pkg_setup
+
+		if use clang && use lto && tc-ld-is-lld ; then
+			local version_lld=$(ld.lld --version 2>/dev/null | awk '{ print $2 }')
+			[[ -n ${version_lld} ]] && version_lld=$(ver_cut 1 "${version_lld}")
+			[[ -z ${version_lld} ]] && die "Failed to read ld.lld version!"
+
+			local version_llvm_rust=$(rustc -Vv 2>/dev/null | grep -F -- 'LLVM version:' | awk '{ print $3 }')
+			[[ -n ${version_llvm_rust} ]] && version_llvm_rust=$(ver_cut 1 "${version_llvm_rust}")
+			[[ -z ${version_llvm_rust} ]] && die "Failed to read used LLVM version from rustc!"
+
+			if ver_test "${version_lld}" -ne "${version_llvm_rust}" ; then
+				eerror "Rust is using LLVM version ${version_llvm_rust} but ld.lld version belongs to LLVM version ${version_lld}."
+				eerror "You will be unable to link ${CATEGORY}/${PN}. To proceed you have the following options:"
+				eerror "  - Manually switch rust version using 'eselect rust' to match used LLVM version"
+				eerror "  - Switch to dev-lang/rust[system-llvm] which will guarantee matching version"
+				eerror "  - Build ${CATEGORY}/${PN} without USE=lto"
+				eerror "  - Rebuild lld with llvm that was used to build rust (may need to rebuild the whole "
+				eerror "    llvm/clang/lld/rust chain depending on your @world updates)"
+				die "LLVM version used by Rust (${version_llvm_rust}) does not match with ld.lld version (${version_lld})!"
+			fi
+		fi
+
+		python-any-r1_pkg_setup
+
+		# Avoid PGO profiling problems due to enviroment leakage
+		# These should *always* be cleaned up anyway
+		unset \
+			DBUS_SESSION_BUS_ADDRESS \
+			DISPLAY \
+			ORBIT_SOCKETDIR \
+			SESSION_MANAGER \
+			XAUTHORITY \
+			XDG_CACHE_HOME \
+			XDG_SESSION_COOKIE
+
+		# Build system is using /proc/self/oom_score_adj, bug #604394
+		addpredict /proc/self/oom_score_adj
+
+		if use pgo ; then
+			# Update 105.0: "/proc/self/oom_score_adj" isn't enough anymore with pgo, but not sure
+			# whether that's due to better OOM handling by Firefox (bmo#1771712), or portage
+			# (PORTAGE_SCHEDULING_POLICY) update...
+			addpredict /proc
+
+			# Clear tons of conditions, since PGO is hardware-dependant.
+			addpredict /dev
+		fi
+
+		if ! mountpoint -q /dev/shm ; then
+			# If /dev/shm is not available, configure is known to fail with
+			# a traceback report referencing /usr/lib/pythonN.N/multiprocessing/synchronize.py
+			ewarn "/dev/shm is not mounted -- expect build failures!"
+		fi
+
+		# Google API keys (see http://www.chromium.org/developers/how-tos/api-keys)
+		# Note: These are for Gentoo Linux use ONLY. For your own distribution, please
+		# get your own set of keys.
+		if [[ -z "${MOZ_API_KEY_GOOGLE+set}" ]] ; then
+			MOZ_API_KEY_GOOGLE="AIzaSyDEAOvatFogGaPi0eTgsV_ZlEzx0ObmepsMzfAc"
+		fi
+
+		if [[ -z "${MOZ_API_KEY_LOCATION+set}" ]] ; then
+			MOZ_API_KEY_LOCATION="AIzaSyB2h2OuRgGaPicUgy5N-5hsZqiPW6sH3n_rptiQ"
+		fi
+
+		# Mozilla API keys (see https://location.services.mozilla.com/api)
+		# Note: These are for Gentoo Linux use ONLY. For your own distribution, please
+		# get your own set of keys.
+		if [[ -z "${MOZ_API_KEY_MOZILLA+set}" ]] ; then
+			MOZ_API_KEY_MOZILLA="edb3d487-3a84-46m0ap1e3-9dfd-92b5efaaa005"
+		fi
+
+		# Ensure we use C locale when building, bug #746215
+		export LC_ALL=C
+	fi
+}
+
+src_unpack() {
+	local _lp_dir="${WORKDIR}/language_packs"
+	local _src_file
+
+	if [[ ! -d "${_lp_dir}" ]] ; then
+		mkdir "${_lp_dir}" || die
+	fi
+
+	for _src_file in ${A} ; do
+		if [[ ${_src_file} == *.xpi ]]; then
+			cp "${DISTDIR}/${_src_file}" "${_lp_dir}" || die "Failed to copy '${_src_file}' to '${_lp_dir}'!"
+		else
+			unpack ${_src_file}
+		fi
+	done
+}
+
+src_prepare() {
+	if use lto; then
+		rm -v "${WORKDIR}"/firefox-patches/*-LTO-Only-enable-LTO-*.patch || die
+	fi
+
+	# Workaround for bgo#917599
+	if has_version ">=dev-libs/icu-74.1" && use system-icu ; then
+		eapply "${WORKDIR}"/firefox-patches/*-bmo-1862601-system-icu-74.patch
+	fi
+	rm -v "${WORKDIR}"/firefox-patches/*-bmo-1862601-system-icu-74.patch || die
+
+	# Workaround for bgo#915651 on musl
+	if use elibc_glibc ; then
+		rm -v "${WORKDIR}"/firefox-patches/*bgo-748849-RUST_TARGET_override.patch || die
+	fi
+
+	eapply "${WORKDIR}/firefox-patches"
+
+	# Allow user to apply any additional patches without modifing ebuild
+	eapply_user
+
+	# Make cargo respect MAKEOPTS
+	export CARGO_BUILD_JOBS="$(makeopts_jobs)"
+
+	# Workaround for bgo#915651
+	if ! use elibc_glibc ; then
+		if use amd64 ; then
+			export RUST_TARGET="x86_64-unknown-linux-musl"
+		elif use x86 ; then
+			export RUST_TARGET="i686-unknown-linux-musl"
+		else
+			die "Unknown musl chost, please post your rustc -vV along with emerge --info on Gentoo's bug #915651"
+		fi
+	fi
+
+	# Make LTO respect MAKEOPTS
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/build/moz.configure/lto-pgo.configure || die "Failed sedding multiprocessing.cpu_count"
+
+	# Make ICU respect MAKEOPTS
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/intl/icu_sources_data.py || die "Failed sedding multiprocessing.cpu_count"
+
+	# Respect MAKEOPTS all around (maybe some find+sed is better)
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/python/mozbuild/mozbuild/base.py || die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/third_party/libwebrtc/build/toolchain/get_cpu_count.py || die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/third_party/libwebrtc/build/toolchain/get_concurrent_links.py ||
+			die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/third_party/python/gyp/pylib/gyp/input.py || die "Failed sedding multiprocessing.cpu_count"
+
+	sed -i -e "s/multiprocessing.cpu_count()/$(makeopts_jobs)/" \
+		"${S}"/python/mozbuild/mozbuild/code_analysis/mach_commands.py || die "Failed sedding multiprocessing.cpu_count"
+
+	# sed-in toolchain prefix
+	sed -i \
+		-e "s/objdump/${CHOST}-objdump/" \
+		"${S}"/python/mozbuild/mozbuild/configure/check_debug_ranges.py || die "sed failed to set toolchain prefix"
+
+	sed -i \
+		-e 's/ccache_stats = None/return None/' \
+		"${S}"/python/mozbuild/mozbuild/controller/building.py || die "sed failed to disable ccache stats call"
+
+	einfo "Removing pre-built binaries ..."
+
+	find "${S}"/third_party -type f \( -name '*.so' -o -name '*.o' \) -print -delete || die
+
+	# Clear checksums from cargo crates we've manually patched.
+	# moz_clear_vendor_checksums xyz
+
+	# Create build dir
+	BUILD_DIR="${WORKDIR}/${PN}_build"
+	mkdir -p "${BUILD_DIR}" || die
+
+	# Write API keys to disk
+	echo -n "${MOZ_API_KEY_GOOGLE//gGaPi/}" > "${S}"/api-google.key || die
+	echo -n "${MOZ_API_KEY_LOCATION//gGaPi/}" > "${S}"/api-location.key || die
+	echo -n "${MOZ_API_KEY_MOZILLA//m0ap1/}" > "${S}"/api-mozilla.key || die
+
+	xdg_environment_reset
+}
+
+src_configure() {
+	# Show flags set at the beginning
+	einfo "Current BINDGEN_CFLAGS:\t${BINDGEN_CFLAGS:-no value set}"
+	einfo "Current CFLAGS:\t\t${CFLAGS:-no value set}"
+	einfo "Current CXXFLAGS:\t\t${CXXFLAGS:-no value set}"
+	einfo "Current LDFLAGS:\t\t${LDFLAGS:-no value set}"
+	einfo "Current RUSTFLAGS:\t\t${RUSTFLAGS:-no value set}"
+
+	local have_switched_compiler=
+	if use clang; then
+		# Force clang
+		einfo "Enforcing the use of clang due to USE=clang ..."
+
+		local version_clang=$(clang --version 2>/dev/null | grep -F -- 'clang version' | awk '{ print $3 }')
+		[[ -n ${version_clang} ]] && version_clang=$(ver_cut 1 "${version_clang}")
+		[[ -z ${version_clang} ]] && die "Failed to read clang version!"
+
+		if tc-is-gcc; then
+			have_switched_compiler=yes
+		fi
+		AR=llvm-ar
+		CC=${CHOST}-clang-${version_clang}
+		CXX=${CHOST}-clang++-${version_clang}
+		NM=llvm-nm
+		RANLIB=llvm-ranlib
+	elif ! use clang && ! tc-is-gcc ; then
+		# Force gcc
+		have_switched_compiler=yes
+		einfo "Enforcing the use of gcc due to USE=-clang ..."
+		AR=gcc-ar
+		CC=${CHOST}-gcc
+		CXX=${CHOST}-g++
+		NM=gcc-nm
+		RANLIB=gcc-ranlib
+	fi
+
+	if [[ -n "${have_switched_compiler}" ]] ; then
+		# Because we switched active compiler we have to ensure
+		# that no unsupported flags are set
+		strip-unsupported-flags
+	fi
+
+	# Ensure we use correct toolchain,
+	# AS is used in a non-standard way by upstream, #bmo1654031
+	export HOST_CC="$(tc-getBUILD_CC)"
+	export HOST_CXX="$(tc-getBUILD_CXX)"
+	export AS="$(tc-getCC) -c"
+
+	# Configuration tests expect llvm-readelf output, bug 913130
+	READELF="llvm-readelf"
+
+	tc-export CC CXX LD AR AS NM OBJDUMP RANLIB READELF PKG_CONFIG
+
+	# Pass the correct toolchain paths through cbindgen
+	if tc-is-cross-compiler ; then
+		export BINDGEN_CFLAGS="${SYSROOT:+--sysroot=${ESYSROOT}} --target=${CHOST} ${BINDGEN_CFLAGS-}"
+	fi
+
+	# Set MOZILLA_FIVE_HOME
+	export MOZILLA_FIVE_HOME="/usr/$(get_libdir)/${PN}"
+
+	# python/mach/mach/mixin/process.py fails to detect SHELL
+	export SHELL="${EPREFIX}/bin/bash"
+
+	# Set state path
+	export MOZBUILD_STATE_PATH="${BUILD_DIR}"
+
+	# Set MOZCONFIG
+	export MOZCONFIG="${S}/.mozconfig"
+
+	# Initialize MOZCONFIG
+	mozconfig_add_options_ac '' --enable-application=comm/mail
+	mozconfig_add_options_ac '' --enable-project=comm/mail
+
+	# Set Gentoo defaults
+	mozconfig_add_options_ac 'Gentoo default' \
+		--allow-addon-sideload \
+		--disable-cargo-incremental \
+		--disable-crashreporter \
+		--disable-disk-remnant-avoidance \
+		--disable-geckodriver \
+		--disable-gpsd \
+		--disable-install-strip \
+		--disable-legacy-profile-creation \
+		--disable-parental-controls \
+		--disable-strip \
+		--disable-tests \
+		--disable-updater \
+		--disable-valgrind \
+		--disable-wmf \
+		--enable-js-shell \
+		--enable-negotiateauth \
+		--enable-new-pass-manager \
+		--enable-official-branding \
+		--enable-release \
+		--enable-system-ffi \
+		--enable-system-pixman \
+		--enable-system-policies \
+		--host="${CBUILD:-${CHOST}}" \
+		--libdir="${EPREFIX}/usr/$(get_libdir)" \
+		--prefix="${EPREFIX}/usr" \
+		--target="${CHOST}" \
+		--without-ccache \
+		--without-wasm-sandboxed-libraries \
+		--with-intl-api \
+		--with-libclang-path="$(llvm-config --libdir)" \
+		--with-system-nspr \
+		--with-system-nss \
+		--with-system-zlib \
+		--with-toolchain-prefix="${CHOST}-" \
+		--with-unsigned-addon-scopes=app,system \
+		--x-includes="${ESYSROOT}/usr/include" \
+		--x-libraries="${ESYSROOT}/usr/$(get_libdir)"
+
+	# Set update channel
+	local update_channel=release
+	[[ -n ${MOZ_ESR} ]] && update_channel=esr
+	mozconfig_add_options_ac '' --update-channel=${update_channel}
+
+	if ! use x86 ; then
+		mozconfig_add_options_ac '' --enable-rust-simd
+	fi
+
+	# For future keywording: This is currently (97.0) only supported on:
+	# amd64, arm, arm64 & x86.
+	# Might want to flip the logic around if Firefox is to support more arches.
+	# bug 833001, bug 903411#c8
+	if use ppc64 || use riscv; then
+		mozconfig_add_options_ac '' --disable-sandbox
+	else
+		mozconfig_add_options_ac '' --enable-sandbox
+	fi
+
+	# Enable JIT on riscv64 explicitly
+	# Can be removed once upstream enable it by default in the future.
+	use riscv && mozconfig_add_options_ac 'Enable JIT for RISC-V 64' --enable-jit
+
+	if [[ -s "${S}/api-google.key" ]] ; then
+		local key_origin="Gentoo default"
+		if [[ $(cat "${S}/api-google.key" | md5sum | awk '{ print $1 }') != 709560c02f94b41f9ad2c49207be6c54 ]] ; then
+			key_origin="User value"
+		fi
+
+		mozconfig_add_options_ac "${key_origin}" \
+			--with-google-safebrowsing-api-keyfile="${S}/api-google.key"
+	else
+		einfo "Building without Google API key ..."
+	fi
+
+	if [[ -s "${S}/api-location.key" ]] ; then
+		local key_origin="Gentoo default"
+		if [[ $(cat "${S}/api-location.key" | md5sum | awk '{ print $1 }') != ffb7895e35dedf832eb1c5d420ac7420 ]] ; then
+			key_origin="User value"
+		fi
+
+		mozconfig_add_options_ac "${key_origin}" \
+			--with-google-location-service-api-keyfile="${S}/api-location.key"
+	else
+		einfo "Building without Location API key ..."
+	fi
+
+	if [[ -s "${S}/api-mozilla.key" ]] ; then
+		local key_origin="Gentoo default"
+		if [[ $(cat "${S}/api-mozilla.key" | md5sum | awk '{ print $1 }') != 3927726e9442a8e8fa0e46ccc39caa27 ]] ; then
+			key_origin="User value"
+		fi
+
+		mozconfig_add_options_ac "${key_origin}" \
+			--with-mozilla-api-keyfile="${S}/api-mozilla.key"
+	else
+		einfo "Building without Mozilla API key ..."
+	fi
+
+	mozconfig_use_enable rust-extensions thunderbird-rust
+
+	mozconfig_use_with system-av1
+	mozconfig_use_with system-harfbuzz
+	mozconfig_use_with system-harfbuzz system-graphite2
+	mozconfig_use_with system-icu
+	mozconfig_use_with system-jpeg
+	mozconfig_use_with system-libevent
+	mozconfig_use_with system-libvpx
+	mozconfig_use_with system-png
+	mozconfig_use_with system-webp
+
+	if use system-librnp; then
+		mozconfig_add_options_ac "+system-librnp" --enable-compile-environment
+		mozconfig_use_with system-librnp
+	else
+		# This controls the backend of the bundled librnp. Choices are "botan" and "openssl".
+		# RNP Upstream recommends to use botan. In Gentoo it's preferred to use system-librnp.
+		mozconfig_add_options_ac "+bundled librnp backend = botan" --with-librnp-backend="botan"
+	fi
+
+	mozconfig_use_enable dbus
+	mozconfig_use_enable libproxy
+
+	use eme-free && mozconfig_add_options_ac '+eme-free' --disable-eme
+
+	if use hardened ; then
+		mozconfig_add_options_ac "+hardened" --enable-hardening
+		append-ldflags "-Wl,-z,relro -Wl,-z,now"
+
+		# Increase the FORTIFY_SOURCE value, #910071.
+		sed -i -e '/-D_FORTIFY_SOURCE=/s:2:3:' "${S}"/build/moz.configure/toolchain.configure || die
+	fi
+
+	local myaudiobackends=""
+	use jack && myaudiobackends+="jack,"
+	use sndio && myaudiobackends+="sndio,"
+	use pulseaudio && myaudiobackends+="pulseaudio,"
+	! use pulseaudio && myaudiobackends+="alsa,"
+
+	mozconfig_add_options_ac '--enable-audio-backends' --enable-audio-backends="${myaudiobackends::-1}"
+
+	mozconfig_use_enable wifi necko-wifi
+
+	if use X && use wayland ; then
+		mozconfig_add_options_ac '+x11+wayland' --enable-default-toolkit=cairo-gtk3-x11-wayland
+	elif ! use X && use wayland ; then
+		mozconfig_add_options_ac '+wayland' --enable-default-toolkit=cairo-gtk3-wayland-only
+	else
+		mozconfig_add_options_ac '+x11' --enable-default-toolkit=cairo-gtk3-x11-only
+	fi
+
+	# LTO is handled via configure
+	filter-lto
+
+	if use lto ; then
+		if use clang ; then
+			# Upstream only supports lld or mold when using clang.
+			if tc-ld-is-mold ; then
+				# mold expects the -flto line from *FLAGS configuration, bgo#923119
+				append-ldflags "-flto=thin"
+				mozconfig_add_options_ac "using ld=mold due to system selection" --enable-linker=mold
+			else
+				mozconfig_add_options_ac "forcing ld=lld due to USE=clang and USE=lto" --enable-linker=lld
+			fi
+
+			mozconfig_add_options_ac '+lto' --enable-lto=cross
+
+		else
+			# ThinLTO is currently broken, see bmo#1644409.
+			# mold does not support gcc+lto combination.
+			mozconfig_add_options_ac '+lto' --enable-lto=full
+			mozconfig_add_options_ac "linker is set to bfd" --enable-linker=bfd
+		fi
+
+		if use pgo ; then
+			mozconfig_add_options_ac '+pgo' MOZ_PGO=1
+
+			if use clang ; then
+				# Used in build/pgo/profileserver.py
+				export LLVM_PROFDATA="llvm-profdata"
+			fi
+		fi
+	else
+		# Avoid auto-magic on linker
+		if use clang ; then
+			# lld is upstream's default
+			if tc-ld-is-mold ; then
+				mozconfig_add_options_ac "using ld=mold due to system selection" --enable-linker=mold
+			else
+				mozconfig_add_options_ac "forcing ld=lld due to USE=clang" --enable-linker=lld
+			fi
+
+		else
+			if tc-ld-is-mold ; then
+				mozconfig_add_options_ac "using ld=mold due to system selection" --enable-linker=mold
+			else
+				mozconfig_add_options_ac "linker is set to bfd due to USE=-clang" --enable-linker=bfd
+			fi
+		fi
+	fi
+
+	mozconfig_use_enable debug
+	if use debug ; then
+		mozconfig_add_options_ac '+debug' --disable-optimize
+		mozconfig_add_options_ac '+debug' --enable-jemalloc
+		mozconfig_add_options_ac '+debug' --enable-real-time-tracing
+	else
+		mozconfig_add_options_ac 'Gentoo defaults' --disable-real-time-tracing
+
+		if is-flag '-g*' ; then
+			if use clang ; then
+				mozconfig_add_options_ac 'from CFLAGS' --enable-debug-symbols=$(get-flag '-g*')
+			else
+				mozconfig_add_options_ac 'from CFLAGS' --enable-debug-symbols
+			fi
+		else
+			mozconfig_add_options_ac 'Gentoo default' --disable-debug-symbols
+		fi
+
+		if is-flag '-O0' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O0
+		elif is-flag '-O4' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O4
+		elif is-flag '-O3' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O3
+		elif is-flag '-O1' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-O1
+		elif is-flag '-Os' ; then
+			mozconfig_add_options_ac "from CFLAGS" --enable-optimize=-Os
+		else
+			mozconfig_add_options_ac "Gentoo default" --enable-optimize=-O2
+		fi
+	fi
+
+	# Debug flag was handled via configure
+	filter-flags '-g*'
+
+	# Optimization flag was handled via configure
+	filter-flags '-O*'
+
+	# elf-hack
+	# Filter "-z,pack-relative-relocs" and let the build system handle it instead.
+	if use amd64 || use x86 ; then
+		filter-flags "-z,pack-relative-relocs"
+
+		if tc-ld-is-mold ; then
+			# relr-elf-hack is currently broken with mold, bgo#916259
+			mozconfig_add_options_ac 'disable elf-hack with mold linker' --disable-elf-hack
+		else
+			mozconfig_add_options_ac 'relr elf-hack' --enable-elf-hack=relr
+		fi
+	elif use ppc64 || use riscv ; then
+		# '--disable-elf-hack' is not recognized on ppc64/riscv,
+		# see bgo #917049, #930046
+		:;
+	else
+		mozconfig_add_options_ac 'disable elf-hack on non-supported arches' --disable-elf-hack
+	fi
+
+	if ! use elibc_glibc; then
+		mozconfig_add_options_ac '!elibc_glibc' --disable-jemalloc
+	fi
+
+	# System-av1 fix
+	use system-av1 && append-ldflags "-Wl,--undefined-version"
+
+	# Allow elfhack to work in combination with unstripped binaries
+	# when they would normally be larger than 2GiB.
+	append-ldflags "-Wl,--compress-debug-sections=zlib"
+
+	# Make revdep-rebuild.sh happy; Also required for musl
+	append-ldflags -Wl,-rpath="${MOZILLA_FIVE_HOME}",--enable-new-dtags
+
+	# Pass $MAKEOPTS to build system
+	export MOZ_MAKE_FLAGS="${MAKEOPTS}"
+
+	# Use system's Python environment
+	export PIP_NETWORK_INSTALL_RESTRICTED_VIRTUALENVS=mach
+
+	export MACH_BUILD_PYTHON_NATIVE_PACKAGE_SOURCE="none"
+
+	# Disable notification when build system has finished
+	export MOZ_NOSPAM=1
+
+	# Portage sets XARGS environment variable to "xargs -r" by default which
+	# breaks build system's check_prog() function which doesn't support arguments
+	mozconfig_add_options_ac 'Gentoo default' "XARGS=${EPREFIX}/usr/bin/xargs"
+
+	# Set build dir
+	mozconfig_add_options_mk 'Gentoo default' "MOZ_OBJDIR=${BUILD_DIR}"
+
+	# Show flags we will use
+	einfo "Build BINDGEN_CFLAGS:\t${BINDGEN_CFLAGS:-no value set}"
+	einfo "Build CFLAGS:\t\t${CFLAGS:-no value set}"
+	einfo "Build CXXFLAGS:\t\t${CXXFLAGS:-no value set}"
+	einfo "Build LDFLAGS:\t\t${LDFLAGS:-no value set}"
+	einfo "Build RUSTFLAGS:\t\t${RUSTFLAGS:-no value set}"
+
+	# Handle EXTRA_CONF and show summary
+	local ac opt hash reason
+
+	# Apply EXTRA_ECONF entries to $MOZCONFIG
+	if [[ -n ${EXTRA_ECONF} ]] ; then
+		IFS=\! read -a ac <<<${EXTRA_ECONF// --/\!}
+		for opt in "${ac[@]}"; do
+			mozconfig_add_options_ac "EXTRA_ECONF" --${opt#--}
+		done
+	fi
+
+	echo
+	echo "=========================================================="
+	echo "Building ${PF} with the following configuration"
+	grep ^ac_add_options "${MOZCONFIG}" | while read ac opt hash reason; do
+		[[ -z ${hash} || ${hash} == \# ]] \
+			|| die "error reading mozconfig: ${ac} ${opt} ${hash} ${reason}"
+		printf "    %-30s  %s\n" "${opt}" "${reason:-mozilla.org default}"
+	done
+	echo "=========================================================="
+	echo
+
+	./mach configure || die
+}
+
+src_compile() {
+	local virtx_cmd=
+
+	if tc-ld-is-mold && use lto; then
+		# increase ulimit with mold+lto, bugs #892641, #907485
+		if ! ulimit -n 16384 1>/dev/null 2>&1 ; then
+			ewarn "Unable to modify ulimits - building with mold+lto might fail due to low ulimit -n resources."
+			ewarn "Please see bugs #892641 & #907485."
+		else
+			ulimit -n 16384
+		fi
+	fi
+
+	if use pgo; then
+		# Reset and cleanup environment variables used by GNOME/XDG
+		gnome2_environment_reset
+
+		addpredict /root
+
+		if ! use X; then
+			virtx_cmd=virtwl
+		else
+			virtx_cmd=virtx
+		fi
+	fi
+
+	if ! use X; then
+		local -x GDK_BACKEND=wayland
+	else
+		local -x GDK_BACKEND=x11
+	fi
+
+	${virtx_cmd} ./mach build --verbose || die
+}
+
+src_install() {
+	# xpcshell is getting called during install
+	pax-mark m \
+		"${BUILD_DIR}"/dist/bin/xpcshell \
+		"${BUILD_DIR}"/dist/bin/${PN} \
+		"${BUILD_DIR}"/dist/bin/plugin-container
+
+	DESTDIR="${D}" ./mach install || die
+
+	# Upstream cannot ship symlink but we can (bmo#658850)
+	rm "${ED}${MOZILLA_FIVE_HOME}/${PN}-bin" || die
+	dosym ${PN} ${MOZILLA_FIVE_HOME}/${PN}-bin
+
+	# Don't install llvm-symbolizer from sys-devel/llvm package
+	if [[ -f "${ED}${MOZILLA_FIVE_HOME}/llvm-symbolizer" ]] ; then
+		rm -v "${ED}${MOZILLA_FIVE_HOME}/llvm-symbolizer" || die
+	fi
+
+	# Install policy (currently only used to disable application updates)
+	insinto "${MOZILLA_FIVE_HOME}/distribution"
+	newins "${FILESDIR}"/distribution.ini distribution.ini
+	newins "${FILESDIR}"/disable-auto-update.policy.json policies.json
+
+	# Install system-wide preferences
+	local PREFS_DIR="${MOZILLA_FIVE_HOME}/defaults/pref"
+	insinto "${PREFS_DIR}"
+	newins "${FILESDIR}"/gentoo-default-prefs-r1.js gentoo-prefs.js
+
+	local GENTOO_PREFS="${ED}${PREFS_DIR}/gentoo-prefs.js"
+
+	# Force hwaccel prefs if USE=hwaccel is enabled
+	if use hwaccel ; then
+		cat "${FILESDIR}"/gentoo-hwaccel-prefs.js \
+		>>"${GENTOO_PREFS}" \
+		|| die "failed to add prefs to force hardware-accelerated rendering to all-gentoo.js"
+
+		if use wayland; then
+			cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set hwaccel wayland prefs"
+			pref("gfx.x11-egl.force-enabled",          false);
+			EOF
+		else
+			cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set hwaccel x11 prefs"
+			pref("gfx.x11-egl.force-enabled",          true);
+			EOF
+		fi
+	fi
+
+	# Set dictionary path to use system hunspell
+	cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set spellchecker.dictionary_path pref"
+	pref("spellchecker.dictionary_path",       "${EPREFIX}/usr/share/myspell");
+	EOF
+
+	# Force the graphite pref if USE=system-harfbuzz is enabled, since the pref cannot disable it
+	if use system-harfbuzz ; then
+		cat >>"${GENTOO_PREFS}" <<-EOF || die "failed to set gfx.font_rendering.graphite.enabled pref"
+		sticky_pref("gfx.font_rendering.graphite.enabled", true);
+		EOF
+	fi
+
+	# Install language packs
+	local langpacks=( $(find "${WORKDIR}/language_packs" -type f -name '*.xpi') )
+	if [[ -n "${langpacks}" ]] ; then
+		moz_install_xpi "${MOZILLA_FIVE_HOME}/distribution/extensions" "${langpacks[@]}"
+	fi
+
+	# Install icons
+	local icon_srcdir="${S}/comm/mail/branding/thunderbird"
+	local icon_symbolic_file="${icon_srcdir}/TB-symbolic.svg"
+
+	insinto /usr/share/icons/hicolor/symbolic/apps
+	newins "${icon_symbolic_file}" ${PN}-symbolic.svg
+
+	local icon size
+	for icon in "${icon_srcdir}"/default*.png ; do
+		size=${icon%.png}
+		size=${size##*/default}
+
+		if [[ ${size} -eq 48 ]] ; then
+			newicon "${icon}" ${PN}.png
+		fi
+
+		newicon -s ${size} "${icon}" ${PN}.png
+	done
+
+	# Install menu
+	local app_name="Mozilla ${MOZ_PN^}"
+	local desktop_file="${FILESDIR}/icon/${PN}-r2.desktop"
+	local desktop_filename="${PN}.desktop"
+	local exec_command="${PN}"
+	local icon="${PN}"
+	local use_wayland="false"
+
+	if use wayland ; then
+		use_wayland="true"
+	fi
+
+	cp "${desktop_file}" "${WORKDIR}/${PN}.desktop-template" || die
+
+	sed -i \
+		-e "s:@NAME@:${app_name}:" \
+		-e "s:@EXEC@:${exec_command}:" \
+		-e "s:@ICON@:${icon}:" \
+		"${WORKDIR}/${PN}.desktop-template" || die
+
+	newmenu "${WORKDIR}/${PN}.desktop-template" "${desktop_filename}"
+
+	rm "${WORKDIR}/${PN}.desktop-template" || die
+
+	# Install wrapper script
+	[[ -f "${ED}/usr/bin/${PN}" ]] && rm "${ED}/usr/bin/${PN}"
+	newbin "${FILESDIR}/${PN}-r1.sh" ${PN}
+
+	# Update wrapper
+	sed -i \
+		-e "s:@PREFIX@:${EPREFIX}/usr:" \
+		-e "s:@MOZ_FIVE_HOME@:${MOZILLA_FIVE_HOME}:" \
+		-e "s:@APULSELIB_DIR@:${apulselib}:" \
+		-e "s:@DEFAULT_WAYLAND@:${use_wayland}:" \
+		"${ED}/usr/bin/${PN}" || die
+}
+
+pkg_preinst() {
+	xdg_pkg_preinst
+
+	# If the apulse libs are available in MOZILLA_FIVE_HOME then apulse
+	# does not need to be forced into the LD_LIBRARY_PATH
+	if use pulseaudio && has_version ">=media-sound/apulse-0.1.12-r4" ; then
+		einfo "APULSE found; Generating library symlinks for sound support ..."
+		local lib
+		pushd "${ED}${MOZILLA_FIVE_HOME}" &>/dev/null || die
+		for lib in ../apulse/libpulse{.so{,.0},-simple.so{,.0}} ; do
+			# A quickpkg rolled by hand will grab symlinks as part of the package,
+			# so we need to avoid creating them if they already exist.
+			if [[ ! -L ${lib##*/} ]] ; then
+				ln -s "${lib}" ${lib##*/} || die
+			fi
+		done
+		popd &>/dev/null || die
+	fi
+}
+
+pkg_postinst() {
+	xdg_pkg_postinst
+
+	if use pulseaudio && has_version ">=media-sound/apulse-0.1.12-r4" ; then
+		elog "Apulse was detected at merge time on this system and so it will always be"
+		elog "used for sound.  If you wish to use pulseaudio instead please unmerge"
+		elog "media-sound/apulse."
+		elog
+	fi
+
+	optfeature_header "Optional programs for extra features:"
+	optfeature "desktop notifications" x11-libs/libnotify
+	optfeature "encrypted chat support" net-libs/libotr
+	optfeature "fallback mouse cursor theme e.g. on WMs" gnome-base/gsettings-desktop-schemas
+}