Install this version:
emerge -a =sci-libs/idlmarkwardt-20160319-r1
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =sci-libs/idlmarkwardt-20160319-r1
Or alternatively:
emerge --autounmask-write -a =sci-libs/idlmarkwardt-20160319-r1
# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DESCRIPTION="Craig Markwardt IDL procedures (MPFIT, CMSVLIB, etc)"
HOMEPAGE="http://cow.physics.wisc.edu/~craigm/idl/idl.html"
SRC_URI="http://www.physics.wisc.edu/~craigm/idl/down/cmtotal.tar.gz -> ${P}.tar.gz"
S="${WORKDIR}"
LICENSE="Markwardt"
SLOT="0"
KEYWORDS="~amd64 ~x86"
RDEPEND="dev-lang/gdl"
src_install() {
insinto /usr/share/gnudatalanguage/idlmarkwardt
doins *.pro
dodoc *README
}
dev-lang/gdl