Install this version:
emerge -a =sci-astronomy/idlastro-20161220-r1
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =sci-astronomy/idlastro-20161220-r1
Or alternatively:
emerge --autounmask-write -a =sci-astronomy/idlastro-20161220-r1
# Copyright 1999-2024 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
DESCRIPTION="Astronomical user routines for IDL"
HOMEPAGE="https://idlastro.gsfc.nasa.gov/"
SRC_URI="https://idlastro.gsfc.nasa.gov/ftp/astron.tar.gz -> ${P}.tar.gz"
S=${WORKDIR}
LICENSE="BSD-2 BSD"
SLOT="0"
KEYWORDS="~amd64 ~x86"
RDEPEND="dev-lang/gdl"
src_install() {
insinto /usr/share/gnudatalanguage/${PN}
doins -r pro/*
dodoc *txt text/*
}
dev-lang/gdl