diff --git a/qt-5.12.7-0.build.sh b/qt-5.12.7-0.build.sh
new file mode 100755
index 0000000..a0e93d3
--- /dev/null
+++ b/qt-5.12.7-0.build.sh
@@ -0,0 +1,61 @@
+#! /bin/bash
+
+PKG=qt
+VERSION=5.12.7
+BUILD=0
+
+PREFIX=/pkg/$PKG-$VERSION-$BUILD
+if [ -n "$TESTING" ]; then PREFIX=/dev/shm/$PKG-$VERSION-$BUILD ; fi
+
+set -xe
+umask 022
+
+BUILD_TMPDIR=/dev/shm/$PKG-$VERSION-$BUILD.build.tmp
+test -d $BUILD_TMPDIR && ( chmod -R u+rwx $BUILD_TMPDIR || true ; rm -rf $BUILD_TMPDIR )
+mkdir -p $BUILD_TMPDIR/home
+export TMPDIR=$BUILD_TMPDIR
+export HOME=$BUILD_TMPDIR/home
+
+exec </dev/null
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH
+	if [ -d $PREFIX/.compatlibs ]; then export LD_LIBRARY_PATH=$PREFIX/.compatlibs\${LD_LIBRARY_PATH:+:}\$LD_LIBRARY_PATH ; fi
+EOF
+. $PREFIX/profile
+
+NPROC=$(( $(nproc) * 4 / 5 + 1 ))
+
+BUILD=$PREFIX/build
+
+mkdir -p $BUILD
+cd $BUILD
+# orig: https://download.qt.io/archive/qt/5.12/5.12.7/single/qt-everywhere-src-5.12.7.tar.xz
+BEEHIVE=https://beehive.molgen.mpg.de/ce2c5661c028b9de6183245982d7c120/qt-everywhere-src-5.12.7.tar.xz
+test -e qt-everywhere-src-5.12.7.tar.xz  || wget -nv $BEEHIVE
+test -d qt-everywhere-src-5.12.7  || tar -xf qt-everywhere-src-5.12.7.tar.xz
+cd qt-everywhere-src-5.12.7
+
+# use bundled libevent
+sed -e '/webengine-system-libevent/ s/=true\s*$/=false/' -i ./qtwebengine/src/core/config/linux.pri
+
+./configure \
+    -opensource \
+    -confirm-license \
+    -prefix ${PREFIX} \
+    -R ${PREFIX}/lib \
+    -nomake examples \
+    -nomake tests \
+    -nomake tools \
+    -no-strip \
+    -no-pch \
+    -xcb \
+    -qpa xcb \
+    -opengl \
+    -verbose
+
+make -j $NPROC
+make install
+
+exit
diff --git a/rstudio-1.2.5019-1.build.sh b/rstudio-1.2.5019-1.build.sh
new file mode 100755
index 0000000..9d8709f
--- /dev/null
+++ b/rstudio-1.2.5019-1.build.sh
@@ -0,0 +1,38 @@
+#! /bin/bash
+
+PKG=rstudio
+VERSION=1.2.5019
+BUILD=1
+
+QTPKG=/pkg/qt-5.12.7-0
+
+PREFIX=/pkg/$PKG-$VERSION-$BUILD
+OLDPREFIX=/pkg/$PKG-$VERSION-0
+
+if [ -n "$TESTING" ]; then PREFIX=/dev/shm/$PKG-$VERSION-$BUILD ; fi
+
+set -xe
+umask 022
+
+mkdir -p $PREFIX
+cat >$PREFIX/profile <<-EOF
+	PATH=$PREFIX/bin:\$PATH:/usr/local/package/bin
+	if [ -d $PREFIX/.compatlibs ]; then export LD_LIBRARY_PATH=$PREFIX/.compatlibs\${LD_LIBRARY_PATH:+:}\$LD_LIBRARY_PATH ; fi
+EOF
+. $PREFIX/profile
+
+
+# salvage the former build
+cd $OLDPREFIX
+
+cp -a R bin resources www www-symbolmaps $PREFIX
+mkdir -p $PREFIX/doc
+cp -a [A-Z]?* $PREFIX/doc
+
+# fix rpath
+cd $PREFIX/bin
+for BINARY in diagnostics rpostback rsession rstudio; do
+  patchelf --set-rpath $QTPKG/lib $BINARY
+done
+
+exit