diff --git a/sci-chemistry/votca-csg/Manifest b/sci-chemistry/votca-csg/Manifest
index 05d0798ce45e7..07e612210878c 100644
--- a/sci-chemistry/votca-csg/Manifest
+++ b/sci-chemistry/votca-csg/Manifest
@@ -1,8 +1,5 @@
-DIST votca-csg-1.5.1.tar.gz 708319 BLAKE2B 2ea75cf08dc3005bd08ebe85113d95743fe85bae4b7ac3c2e2d9b64be64a7103ecf30b9edf45cffa86b7588d5c57a0256aef02f4590fa6031cb63881480bd0fd SHA512 3559452182c325d5df72918ec6e12122c8214df9733d779c123ff199597fe47fc493fd75adf1f5dbc6b55016373863378ba3cc69fb6b61bc1531c6e591d8131c
 DIST votca-csg-1.6.4.tar.gz 537966 BLAKE2B c9ccc3aa28bdc4a2a2c080104b70602d8cf4be19a71e7d0b4a1c03d11f54b645984103d1662823a9308a4e4c4baedef731de06ff314b168f89e7326c0d3c8ee9 SHA512 4cdbf6c0a593720675f48f574ff9a93d038a48037543c1e09a4559d3eb262a2d8bf83d5f5dab85b4820a541e0c57f7cca78315d5b3382763e8acd8cc0fcb65ac
 DIST votca-csg-2021.2.tar.gz 4300675 BLAKE2B 8db666e77bc7d6d8da34fed97b0466e5296019aa703f324d46531992c0af544c31b2e3e4595883791cef7acd6d2d52eff8edc7eeedecaae0eb9e0cbf334748ab SHA512 5808edd96199cad6e5fc803a0e489f3d2f376da3d64f565536cc37561a0fcd22960563af7d3f86522bcc7336c8d6f7c7f6501b36feb960aae5168904156bfbf6
-DIST votca-csg-manual-1.5.1.pdf 1263719 BLAKE2B 29e2ce27215787a1121e45ec1e88ce7c61ba81709a2519aa0959eede505498b9aaf4f38666bb1a4f97837c98b862e7ed02405da07294a7ec76cc80390fe72e0d SHA512 7d9fb4c635383e1b9c9547691f8729e19f273fcafc4dab2a6b438b3ce98ea05bd31887d09bc4edc86ceb0b04d71a4371aed7aadc3ba6864f7be2ef3328ede642
 DIST votca-csg-manual-1.6.4.pdf 1242124 BLAKE2B 003a255d2869c8185f9e03038f646a80b682be3daceb18757c791f5d52101379402aee20c5dcb65ef8ce651bd6f6590ad5249e835e53ce92e04eb33214017a9e SHA512 36956acd24a21cb0a1dd26d6640b41b7473132948327c05856191b4f9531b4d1d5f98be68a9d1a847935d47633d483e87c2300634233a6e617a010c1fb563690
-DIST votca-csg-tutorials-1.5.1.tar.gz 5949467 BLAKE2B c6de6084fbb1d2c4ac2ce75d01a1153eabc63386063de800ff2dc6b483b0568191e7f06ddcb8be46123224ccfd3a97f5fb4e7cd603c0ee99a8636d7143f6c701 SHA512 f2e709ae31d914fe12a4ce37b5019deb878b15ade14972f2a8204bec8970ba2c8946b71b94a5bfd6f7569e41173bfbc75275ea09cbee4358ad1de0e84751049c
 DIST votca-csg-tutorials-1.6.4.tar.gz 5944389 BLAKE2B 66f1d4947bb28ec602250226ad2c08cc02278a90776acbcadca2df3078361435fb2353ee0fa299d0d19697d36682f20aab709d45539d5ac7e7070942601ebc3f SHA512 7e40037f2e70c861fd7f5c63806c17ad56672a340a8795fa745414940c55f593bef32b9f6b9050400131ed9e66aa927149e9d324a1c264364d8504baf1921e28
 DIST votca-csg-tutorials-2021.2.tar.gz 5942042 BLAKE2B a03627406a3b56ebf978dc82629e1f0950bfbb121a0f6c7fd60341986efe4892ba8bf1e6b526e6df2df5fb81351177ad97816568521b9dc6a91e72d6853c1e62 SHA512 3ddeb3e57353e6d4e59163ee1303b39d4e3b623309875f280bf8c02dde76d0615b32a27ea960a301b61b81034a538df87dfe97a53dfdd0c81f52629eadd64f1f
diff --git a/sci-chemistry/votca-csg/votca-csg-1.5.1.ebuild b/sci-chemistry/votca-csg/votca-csg-1.5.1.ebuild
deleted file mode 100644
index 523b73df43ac9..0000000000000
--- a/sci-chemistry/votca-csg/votca-csg-1.5.1.ebuild
+++ /dev/null
@@ -1,99 +0,0 @@
-# Copyright 1999-2021 Gentoo Authors
-# Distributed under the terms of the GNU General Public License v2
-
-EAPI=6
-
-CMAKE_MAKEFILE_GENERATOR="ninja"
-
-inherit bash-completion-r1 cmake-utils multilib
-
-IUSE="doc examples extras +gromacs hdf5"
-PDEPEND="extras? ( ~sci-chemistry/${PN}apps-${PV} )"
-if [ "${PV}" != "9999" ]; then
-	SRC_URI="https://github.com/${PN/-//}/archive/v${PV}.tar.gz -> ${P}.tar.gz
-		doc? ( https://github.com/${PN/-//}-manual/releases/download/v${PV}/${PN}-manual-${PV}.pdf )
-		examples? (	https://github.com/${PN/-//}-tutorials/archive/v${PV}.tar.gz -> ${PN}-tutorials-${PV}.tar.gz )"
-	KEYWORDS="~amd64 ~x86 ~amd64-linux"
-	S="${WORKDIR}/${P#votca-}"
-else
-	inherit git-r3
-	EGIT_REPO_URI="https://github.com/${PN/-//}.git"
-	PDEPEND="${PDEPEND} doc? ( ~app-doc/${PN}-manual-${PV} )"
-fi
-
-DESCRIPTION="Votca coarse-graining engine"
-HOMEPAGE="http://www.votca.org"
-
-LICENSE="Apache-2.0"
-SLOT="0"
-
-RDEPEND="
-	~sci-libs/votca-tools-${PV}
-	>=dev-cpp/eigen-3.3
-	gromacs? ( <sci-chemistry/gromacs-2020:= )
-	hdf5? ( sci-libs/hdf5 )
-	dev-lang/perl
-	app-shells/bash:*"
-
-DEPEND="${RDEPEND}
-	doc? (
-		app-doc/doxygen[dot]
-		dev-texlive/texlive-latexextra
-		virtual/latex-base
-		dev-tex/pgf
-	)
-	>=app-text/txt2tags-2.5
-	virtual/pkgconfig"
-
-DOCS=( README.md NOTICE CHANGELOG.md )
-
-src_unpack() {
-	if [[ ${PV} != *9999 ]]; then
-		default
-	else
-		git-r3_src_unpack
-		if use examples; then
-			EGIT_REPO_URI="https://github.com/${PN/-//}-tutorials.git"
-			EGIT_BRANCH="master"
-			EGIT_CHECKOUT_DIR="${WORKDIR}/${PN#votca-}-tutorials"\
-				git-r3_src_unpack
-		fi
-	fi
-}
-
-src_configure() {
-	mycmakeargs=(
-		-DWITH_GMX=$(usex gromacs)
-		-DCMAKE_DISABLE_FIND_PACKAGE_HDF5=$(usex '!hdf5')
-		-DWITH_RC_FILES=OFF
-	)
-	cmake-utils_src_configure
-}
-
-src_install() {
-	cmake-utils_src_install
-	newbashcomp scripts/csg-completion.bash csg_call
-	for i in "${ED}"/usr/bin/csg_*; do
-		[[ ${i} = *csg_call ]] && continue
-		bashcomp_alias csg_call "${i##*/}"
-	done
-	if use doc; then
-		[[ ${PV} != *9999* ]] && dodoc "${DISTDIR}/${PN}-manual-${PV}.pdf"
-		cmake-utils_src_make -C "${CMAKE_BUILD_DIR}" html
-		dodoc -r "${CMAKE_BUILD_DIR}"/share/doc/html
-	fi
-	if use examples; then
-		insinto "/usr/share/doc/${PF}/tutorials"
-		docompress -x "/usr/share/doc/${PF}/tutorials"
-		rm -rf "${WORKDIR}/${PN#votca-}"-tutorials*/CMake*
-		doins -r "${WORKDIR}/${PN#votca-}"-tutorials*/*
-	fi
-}
-
-pkg_postinst() {
-	einfo
-	einfo "Please read and cite:"
-	einfo "VOTCA, J. Chem. Theory Comput. 5, 3211 (2009). "
-	einfo "https://dx.doi.org/10.1021/ct900369w"
-	einfo
-}