diff --git a/app-arch/tarlz/tarlz-0.19-r2.ebuild b/app-arch/tarlz/tarlz-0.19-r3.ebuild
similarity index 77%
rename from app-arch/tarlz/tarlz-0.19-r2.ebuild
rename to app-arch/tarlz/tarlz-0.19-r3.ebuild
index 86091b0f24..ac53651c56 100644
--- a/app-arch/tarlz/tarlz-0.19-r2.ebuild
+++ b/app-arch/tarlz/tarlz-0.19-r3.ebuild
@@ -3,7 +3,7 @@
 
 EAPI=7
 
-inherit unpacker
+inherit toolchain-funcs unpacker
 
 DESCRIPTION="A parallel archiver combining tar and lzip"
 HOMEPAGE="https://www.nongnu.org/lzip/tarlz.html"
@@ -25,5 +25,9 @@ PATCHES=(
 )
 
 src_configure() {
-	econf LDFLAGS="${LDFLAGS}" CXXFLAGS="${CXXFLAGS}"
+	econf \
+		CXX="$(tc-getCXX)" \
+		CXXFLAGS="${CXXFLAGS}" \
+		CPPFLAGS="${CPPFLAGS}" \
+		LDFLAGS="${LDFLAGS}"
 }
diff --git a/dev-libs/mtxclient/Manifest b/dev-libs/mtxclient/Manifest
index 7416277c25..b80e8680c1 100644
--- a/dev-libs/mtxclient/Manifest
+++ b/dev-libs/mtxclient/Manifest
@@ -1,2 +1,2 @@
-DIST mtxclient-0.4.1.tar.gz 572552 BLAKE2B 4d0facaffb0ce1fadc1011b7d557774bcd9ffcef7349894255b9522bcc4e9228739ad8da5a60b0addf6835cf5de3613bebc19842b6922ab9cf94f88c944d0091 SHA512 246c84bc8bc7dd6fd688c79601d16e931b5aaf5fe967d6ea226f1961df2b74ad70d4e790b7400051e007506f58ecd6594ccead31bd3c6308aa2c6727b122c203
 DIST mtxclient-0.5.0.tar.gz 582236 BLAKE2B 5166c32127973e886adadb6ad8a2895ba5ac77f78e9a774f039b0c8d4329078c0b8de965b477ce1c3a7e4cd929de8ba9b8d4f8d8b0452f6c49c873285a4d8b3a SHA512 6e1e9f5ecb1e6911b5bee85569e4477f6ee4c86ef479a3f408c8bbd187750b3b78db1db0337b51e1df9b90fee3b486eaf909bb79b69a97919685074eee3a82cd
+DIST mtxclient-0.5.1.tar.gz 582367 BLAKE2B d30a5e0e16d6783d8d1175e5f4144d845fe62897dcc7952cb1598470befa1da47a2b06cd70a60f511a1c2e7656eca2cf5a87734cbc61b79d2a05df295fd256e0 SHA512 f0a5e823bd7f3cccdf5f919c04c36a1a5ab4d2627a6f8f3fac78e4b300eda3b9e1f5060fb31e6e47267bbafc3a03f6c2a2d16c2323e63ce4889f551860e7703f
diff --git a/dev-libs/mtxclient/mtxclient-0.4.1.ebuild b/dev-libs/mtxclient/mtxclient-0.5.1.ebuild
similarity index 100%
rename from dev-libs/mtxclient/mtxclient-0.4.1.ebuild
rename to dev-libs/mtxclient/mtxclient-0.5.1.ebuild
diff --git a/kde-misc/skanpage/skanpage-2021.01.12.ebuild b/kde-misc/skanpage/skanpage-2021.01.12.ebuild
index 75d36c19cc..46c6aca133 100644
--- a/kde-misc/skanpage/skanpage-2021.01.12.ebuild
+++ b/kde-misc/skanpage/skanpage-2021.01.12.ebuild
@@ -22,7 +22,7 @@ KEYWORDS="~amd64 ~x86"
 
 DEPEND=">=dev-qt/qtwidgets-${QTMIN}:5
 	>=dev-qt/qtprintsupport-${QTMIN}:5
-	>=dev-qt/qtquickcontrols-${QTMIN}:5
+	>=dev-qt/qtquickcontrols2-${QTMIN}:5
 	>=kde-apps/libksane-19.04.0:5
 	>=kde-frameworks/kcoreaddons-${KFMIN}:5
 	>=kde-frameworks/ki18n-${KFMIN}:5
diff --git a/mail-client/mailspring-bin/mailspring-bin-1.8.0.ebuild b/mail-client/mailspring-bin/mailspring-bin-1.8.0.ebuild
index 7222538373..cfaa43b622 100644
--- a/mail-client/mailspring-bin/mailspring-bin-1.8.0.ebuild
+++ b/mail-client/mailspring-bin/mailspring-bin-1.8.0.ebuild
@@ -30,6 +30,7 @@ RDEPEND="
 	net-dns/c-ares
 	net-print/cups
 	sys-devel/libtool
+	sys-libs/db
 	virtual/udev
 	=x11-libs/gtk+-3*
 	x11-libs/libnotify
diff --git a/mail-client/mailspring-bin/mailspring-bin-1.9.0.ebuild b/mail-client/mailspring-bin/mailspring-bin-1.9.0.ebuild
index 7222538373..cfaa43b622 100644
--- a/mail-client/mailspring-bin/mailspring-bin-1.9.0.ebuild
+++ b/mail-client/mailspring-bin/mailspring-bin-1.9.0.ebuild
@@ -30,6 +30,7 @@ RDEPEND="
 	net-dns/c-ares
 	net-print/cups
 	sys-devel/libtool
+	sys-libs/db
 	virtual/udev
 	=x11-libs/gtk+-3*
 	x11-libs/libnotify
diff --git a/mail-client/mailspring-bin/mailspring-bin-1.9.1.ebuild b/mail-client/mailspring-bin/mailspring-bin-1.9.1.ebuild
index 7222538373..cfaa43b622 100644
--- a/mail-client/mailspring-bin/mailspring-bin-1.9.1.ebuild
+++ b/mail-client/mailspring-bin/mailspring-bin-1.9.1.ebuild
@@ -30,6 +30,7 @@ RDEPEND="
 	net-dns/c-ares
 	net-print/cups
 	sys-devel/libtool
+	sys-libs/db
 	virtual/udev
 	=x11-libs/gtk+-3*
 	x11-libs/libnotify
diff --git a/media-gfx/bonzomatic/bonzomatic-2021.03.07.ebuild b/media-gfx/bonzomatic/bonzomatic-2021.03.07.ebuild
index a18af24589..441dd73403 100644
--- a/media-gfx/bonzomatic/bonzomatic-2021.03.07.ebuild
+++ b/media-gfx/bonzomatic/bonzomatic-2021.03.07.ebuild
@@ -29,6 +29,7 @@ DEPEND="
 	system-stb? ( dev-libs/stb )
 	system-kissfft? ( sci-libs/kissfft )
 	virtual/opengl
+	virtual/glu
 	media-libs/alsa-lib
 	media-libs/fontconfig
 	x11-libs/libXi
diff --git a/media-gfx/bonzomatic/bonzomatic-9999.ebuild b/media-gfx/bonzomatic/bonzomatic-9999.ebuild
index a18af24589..441dd73403 100644
--- a/media-gfx/bonzomatic/bonzomatic-9999.ebuild
+++ b/media-gfx/bonzomatic/bonzomatic-9999.ebuild
@@ -29,6 +29,7 @@ DEPEND="
 	system-stb? ( dev-libs/stb )
 	system-kissfft? ( sci-libs/kissfft )
 	virtual/opengl
+	virtual/glu
 	media-libs/alsa-lib
 	media-libs/fontconfig
 	x11-libs/libXi
diff --git a/media-gfx/qview/qview-4.0.ebuild b/media-gfx/qview/qview-4.0.ebuild
index 5ffe48a12b..8a4b633d67 100644
--- a/media-gfx/qview/qview-4.0.ebuild
+++ b/media-gfx/qview/qview-4.0.ebuild
@@ -14,14 +14,16 @@ LICENSE="GPL-3"
 SLOT="0"
 KEYWORDS="~amd64"
 
-DEPEND="
+RDEPEND="
 	dev-qt/qtconcurrent:5
 	dev-qt/qtgui:5
 	dev-qt/qtnetwork:5
 	dev-qt/qtwidgets:5
 "
 
-RDEPEND="${DEPEND}"
+DEPEND="${RDEPEND}
+	dev-qt/qttest:5
+"
 
 src_configure() {
 	# https://github.com/jurplel/qView/issues/395
diff --git a/media-sound/noson-app/noson-app-4.4.9.ebuild b/media-sound/noson-app/noson-app-4.4.9.ebuild
index 576b76f713..a04f8048f9 100644
--- a/media-sound/noson-app/noson-app-4.4.9.ebuild
+++ b/media-sound/noson-app/noson-app-4.4.9.ebuild
@@ -19,6 +19,7 @@ DEPEND="
 	>=dev-qt/qttranslations-5.9
 	>=dev-qt/qtgui-5.9
 	>=dev-qt/qtquickcontrols2-5.9
+	>=dev-qt/qtsvg-5.9
 	dev-libs/openssl:0
 	media-libs/flac
 	media-sound/pulseaudio