diff --git a/cgal.be0 b/cgal.be0
new file mode 100755
index 000000000..40f5a97e2
--- /dev/null
+++ b/cgal.be0
@@ -0,0 +1,34 @@
+#!/usr/bin/env beesh
+
+# BEE_VERSION cgal-5.6.3-0
+
+# more info: https://www.cgal.org/
+
+# https://github.com/CGAL/cgal/releases/download/v${PKGVERSION}/CGAL-${PKGVERSION}-library.tar.xz
+SRCURL[0]="https://beehive.molgen.mpg.de/ad04620c9b6f80b666803bce6db943e4/CGAL-5.6.3-library.tar.xz"
+
+# PATCHURL+=()
+
+# build_in_sourcedir
+
+# sourcesubdir_append src
+
+#mee_extract() {
+#    bee_extract "${@}"
+#}
+
+#mee_patch() {
+#    bee_patch "${@}"
+#}
+
+#mee_configure() {
+#    bee_configure
+#}
+
+#mee_build() {
+#    bee_build
+#}
+
+#mee_install() {
+#    bee_install
+#}
diff --git a/opencsg.be0 b/opencsg.be0
new file mode 100755
index 000000000..79c4ad870
--- /dev/null
+++ b/opencsg.be0
@@ -0,0 +1,36 @@
+#!/usr/bin/env beesh
+
+# BEE_VERSION opencsg-1.8.2-0
+
+# more info: https://www.opencsg.org/
+
+# https://www.opencsg.org/OpenCSG-${PKGVERSION}.tar.gz
+SRCURL[0]="https://beehive.molgen.mpg.de/1c34baf2a5474675ba8623cdf70cd0d8/OpenCSG-1.8.2.tar.gz"
+
+# PATCHURL+=()
+
+# build_in_sourcedir
+
+# sourcesubdir_append src
+
+#mee_extract() {
+#    bee_extract "${@}"
+#}
+
+#mee_patch() {
+#    bee_patch "${@}"
+#}
+
+mee_configure() {
+    # Example is a never installed a GLUT demo, so avoid freeglut dependency.
+    bee_configure \
+        -DBUILD_EXAMPLE=OFF
+}
+
+#mee_build() {
+#    bee_build
+#}
+
+#mee_install() {
+#    bee_install
+#}
diff --git a/openscad.be0 b/openscad.be0
new file mode 100755
index 000000000..f6242750b
--- /dev/null
+++ b/openscad.be0
@@ -0,0 +1,64 @@
+#!/usr/bin/env beesh
+
+# BEE_VERSION openscad-2021.01-0
+
+# more info: https://openscad.org/
+# 2021.01 is still the latest release; upstream has published development
+# snapshots only since then.
+
+# https://github.com/openscad/openscad/releases/download/openscad-${PKGVERSION}/openscad-${PKGVERSION}.src.tar.gz
+SRCURL[0]="https://beehive.molgen.mpg.de/79f8e3a42bcfeeb3ddde9e5bc2311f76/openscad-2021.01.src.tar.gz"
+
+PATCHURL+=("https://beehive.molgen.mpg.de/4f9745e5b94f5f09df83e510fabb7685/openscad-2021.01-cgal-5.4-projection-traits.patch")
+PATCHURL+=("https://beehive.molgen.mpg.de/1c23d2882f24d1a9f4d175752c37db94/openscad-2021.01-cgal-5-drop-printPolyhedron.patch")
+PATCHURL+=("https://beehive.molgen.mpg.de/4c0c8821966c8e63948a6adcba92291b/openscad-2021.01-boost-algorithm-join.patch")
+PATCHURL+=("https://beehive.molgen.mpg.de/8bd3ac88c99137bcd2c7f2d8a436b112/openscad-2021.01-boost-filesystem-is-regular-file.patch")
+
+# qmake only searches for feature files in a 'features' directory below the
+# *build* directory, so openscad's own features/*.prf -- which is where every
+# dependency except Qt is detected -- are silently skipped in a shadow build.
+# Build in the source directory, as upstream's README describes.
+build_in_sourcedir
+
+# sourcesubdir_append src
+
+#mee_extract() {
+#    bee_extract "${@}"
+#}
+
+#mee_patch() {
+#    bee_patch "${@}"
+#}
+
+# The distribution's boost is configured with --with-libraries=headers, so
+# /usr/lib holds no libboost_* at all, while openscad links five of them.  Take
+# headers and libraries from the package, which ships both.  Deliberately not
+# named BOOSTDIR: features/boost.prf reads that variable from the environment
+# and would derive a wrong include path from it.
+BOOST_PKGDIR=/pkg/boost-1.86.0-0
+
+mee_configure() {
+    # openscad 2021.01 predates Qt 6, and qtlinks points /usr/local/bin/qmake
+    # at Qt 6, so call the Qt 5 qmake by its full path.  The tree also ships
+    # an (unsupported) CMakeLists.txt, which is what bee would otherwise pick
+    # up as the buildtype.
+    #
+    # Pass the three boost paths by hand.  INCLUDEPATH is emitted ahead of
+    # /usr/include, so the 1.86.0 headers win over the 1.72.0 ones of the
+    # distribution, and QMAKE_RPATHDIR keeps the libraries findable at runtime.
+    start_cmd /usr/local/qt5/bin/qmake \
+        PREFIX=${PREFIX} \
+        INCLUDEPATH+=${BOOST_PKGDIR}/include \
+        LIBS+=-L${BOOST_PKGDIR}/lib \
+        QMAKE_RPATHDIR+=${BOOST_PKGDIR}/lib \
+        openscad.pro
+}
+
+mee_build() {
+    start_cmd make ${BEE_MAKEFLAGS}
+}
+
+mee_install() {
+    # qmake-generated makefiles stage through INSTALL_ROOT, not DESTDIR.
+    start_cmd make ${BEE_MAKEFLAGS} install INSTALL_ROOT=${D}
+}