diff --git a/util/build_prep/macosx/prep.sh.in b/util/build_prep/macosx/prep.sh.in
deleted file mode 100644
index df0d32f3..00000000
--- a/util/build_prep/macosx/prep.sh.in
+++ /dev/null
@@ -1,130 +0,0 @@
-#! /usr/bin/env bash
-
-macosx_version='10.11'
-
-# -----BEGIN COMMON.SH-----
-# -----END COMMON.SH-----
-
-# Ensure we have a new enough CMake
-if ! have cmake; then
-	brew install cmake || exit 1
-	brew link cmake || exit 1
-fi
-
-if ! have cmake; then
-	echo "Unable to install cmake" >&2
-
-	exit 1
-fi
-
-if ! version_min 'cmake --version' 3.3.999; then
-	echo "cmake version too low (3.4+ required)" >&2
-
-	exit 1
-fi
-
-# Install a native "xz" command, in case it is later needed
-if ! have xz; then
-	brew install xz
-fi
-
-# Setup compiler wrappers to specify the minimum
-# Mac OS X version and SDK
-## XXX:TODO: Find this SDK directory
-macosx_sdk_directory="/Library/Developer/CommandLineTools/SDKs/MacOSX${macosx_version}.sdk"
-wrap_compilers_add_options=(-mmacosx-version-min="${macosx_version}" -isysroot "${macosx_sdk_directory}")
-wrap_compilers
-
-# Ensure we have a new enough Boost
-if ! have boost; then
-	BOOST_ROOT="${KEEP_AROUND_DIRECTORY}/boost"
-
-	if ! have boost; then
-		bootstrap_boost -m -c -s
-	fi
-fi
-
-if ! have boost; then
-	echo "Unable to install boost" >&2
-
-	exit 1
-fi
-
-if ! version_min 'boost --version' 1.69.999; then
-	echo "boost version too low (1.70.0+ required)" >&2
-
-	exit 1
-fi
-boost_dir="$(boost --install-prefix)"
-
-# Ensure we have a new enough Qt5
-PATH="${PATH}:/usr/local/opt/qt/bin:${KEEP_AROUND_DIRECTORY}/qt/bin"
-export PATH
-if ! have qtpaths; then
-	(
-		qt5_version='5.11.2'
-		qt5_url="https://download.qt.io/archive/qt/$(echo "${qt5_version}" | cut -f 1-2 -d .)/${qt5_version}/single/qt-everywhere-src-${qt5_version}.tar.xz"
-		qt5_sha256='c6104b840b6caee596fa9a35bc5f57f67ed5a99d6a36497b6fe66f990a53ca81'
-		qt5_archive="qt5-${qt5_version}.tar.xz"
-		qt5_dir="qt-everywhere-src-${qt5_version}"
-
-		cd "${KEEP_AROUND_DIRECTORY}" || exit 1
-
-		rm -rf "${qt5_dir}"
-
-		if [ ! -f "${qt5_archive}" ]; then
-			rm -f "${qt5_archive}.new"
-			wget -O "${qt5_archive}.new" "${qt5_url}" || rm -f "${qt5_archive}.new"
-			qt5_download_sha256="$(openssl dgst -sha256 "${qt5_archive}.new" | sed 's@^.*= *@@')"
-			if [ "${qt5_download_sha256}" != "${qt5_sha256}" ]; then
-				echo "Failed to download Qt5.  Got SHA256 ${qt5_download_sha256}, expected ${qt5_sha256}" >&2
-
-				exit 1
-			fi
-
-			mv "${qt5_archive}.new" "${qt5_archive}" || exit 1
-		fi
-
-		xz -dc "${qt5_archive}" | tar -xf - || exit 1
-
-		(
-			cd "${qt5_dir}" || exit 1
-
-			CC="$(type -p clang)"
-			CXX="$(type -p clang++)"
-			QMAKE_CC="${CC}"
-			QMAKE_CXX="${CXX}"
-			export CC CXX QMAKE_CC QMAKE_CXX
-
-			yes | ./configure -verbose -opensource -rpath -framework -prefix "${KEEP_AROUND_DIRECTORY}/qt" || exit 1
-			make || exit 1
-			make install || exit 1
-		) || exit 1
-
-		rm -rf "${qt5_dir}"
-	)
-fi
-
-if ! have qtpaths; then
-	echo "Unable to install qt5" >&2
-
-	exit 1
-fi
-
-if ! version_min 'qtpaths --qt-version' 5.8.999 5.11.999; then
-	echo "qt5 version not in range (version range: [5.9+, 5.12-))" >&2
-
-	exit 1
-fi
-qt5_dir="$(qtpaths --install-prefix)/lib/cmake/Qt5"
-
-echo "All verified."
-echo ""
-echo "Next steps:"
-echo "    CC='${CC:-cc} ${wrap_compilers_add_options[*]}'"
-echo "    CXX='${CXX:-c++} ${wrap_compilers_add_options[*]}'"
-echo "    export CC CXX"
-echo "    cmake -DBOOST_ROOT=${boost_dir} -DNANO_GUI=ON -DQt5_DIR=${qt5_dir} <dir>"
-echo "    cpack -G \"DragNDrop\""
-
-exit 0
diff --git a/util/build_prep/ubuntu/prep.sh.in b/util/build_prep/ubuntu/prep.sh.in
deleted file mode 100644
index 6697a65a..00000000
--- a/util/build_prep/ubuntu/prep.sh.in
+++ /dev/null
@@ -1,70 +0,0 @@
-#! /usr/bin/env bash
-
-# -----BEGIN COMMON.SH-----
-# -----END COMMON.SH-----
-
-export DEBIAN_FRONTEND=noninteractive
-
-set -euo pipefail
-
-apt-get update --yes
-apt-get --yes install git cmake ninja-build autotools-dev \
-build-essential g++ clang python-dev \
-libicu-dev libbz2-dev \
-locales wget curl apt-utils \
-lsb-release
-apt-get --yes install xorg xvfb xauth xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic
-apt-get --yes install libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools libprotobuf-dev protobuf-compiler
-apt remove --yes libboost-all-dev
-apt autoremove --yes
-
-# Ensure we have a new enough Boost
-if ! have boost; then
-	bootstrap_boost -m -s
-fi
-
-if ! have boost; then
-	echo "Unable to install boost" >&2
-
-	exit 1
-fi
-
-if ! version_min 'boost --version' 1.69.999; then
-	echo "boost version too low (1.70.0+ required)" >&2
-	exit 1
-fi
-boost_dir="$(boost --install-prefix)"
-
-# Ensure we have a new enough Qt5
-if ! have qtpaths; then
-	echo "Unable to install qt5" >&2
-
-	exit 1
-fi
-
-if ! version_min 'qtpaths --qt-version 2>/dev/null' 5.2.999 5.8.999; then
-	if ! version_min 'qtpaths -- --qt-version' 5.2.999 5.8.999; then
-		echo "qt5 version not in range (version range: [5.3+, 5.9-))" >&2
-
-		exit 1
-	fi
-fi
-qt5_dir="$(qtpaths --install-prefix)/lib/cmake/Qt5"
-
-if [ ! -d "${qt5_dir}" ]; then
-	qt5_dir=''
-fi
-
-# Determine how to call cmake
-cmake_add=''
-if [ -n "${qt5_dir}" ]; then
-	cmake_add="${cmake_add} -DQt5_DIR=${qt5_dir}"
-fi
-
-echo "All verified."
-echo ""
-echo "Next steps:"
-echo "    cmake -DBOOST_ROOT=${boost_dir} -DNANO_GUI=ON ${cmake_add} <dir>"
-echo "    cpack -G \"TBZ2\""
-
-exit 0