--- /dev/null
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit desktop flag-o-matic xdg cmake
+
+if [[ ${PV} == *9999 ]] ; then
+ EGIT_REPO_URI="https://github.com/CelestiaProject/Celestia.git"
+ inherit git-r3
+else
+ if [[ ${PV} == *_p* ]] ; then
+ COMMIT_ID="df508a0c597a3d96c1c039fa4a973e294021cfba"
+ SRC_URI="https://github.com/${PN^}Project/${PN^}/archive/${COMMIT_ID}.tar.gz -> ${P}.tar.gz"
+ S="${WORKDIR}/${PN^}-${COMMIT_ID}"
+ KEYWORDS="~amd64 ~x86"
+ else
+ SRC_URI="https://github.com/${PN^}Project/${PN^}/archive/${PV/_/-}.tar.gz -> ${P}.tar.gz"
+ KEYWORDS="~amd64 ~ppc ~ppc64 ~x86 ~amd64-linux ~x86-linux"
+ fi
+fi
+
+DESCRIPTION="OpenGL 3D space simulator"
+HOMEPAGE="https://celestia.space"
+
+LICENSE="GPL-2+"
+SLOT="0"
+IUSE="glut lua nls +qt5 theora"
+REQUIRED_USE="|| ( glut qt5 )"
+
+BDEPEND="
+ dev-cpp/eigen
+ virtual/pkgconfig
+ nls? ( sys-devel/gettext )
+"
+DEPEND="
+ dev-libs/libfmt:=
+ media-libs/glew:0
+ media-libs/libpng:0=
+ sys-libs/zlib:=
+ virtual/glu
+ virtual/jpeg:0
+ virtual/opengl
+ glut? ( media-libs/freeglut )
+ lua? ( dev-lang/lua:* )
+ qt5? (
+ dev-qt/qtcore:5
+ dev-qt/qtgui:5
+ dev-qt/qtwidgets:5
+ )
+ theora? (
+ media-libs/libogg
+ media-libs/libtheora
+ )
+"
+RDEPEND="${DEPEND}"
+
+PATCHES=(
+ # make better desktop files
+ "${FILESDIR}"/${PN}-1.5.0-desktop.patch
+ # add a ~/.celestia for extra directories
+ "${FILESDIR}"/${PN}-1.6.99-cfg.patch
+)
+
+src_prepare() {
+ cmake_src_prepare
+
+ ### This version of Celestia has a bug in the font rendering and
+ ### requires -fsigned-char. We should be able to force this flag
+ ### on all architectures. See bug #316573.
+ append-flags "-fsigned-char"
+}
+
+src_configure() {
+ local mycmakeargs=(
+ -DENABLE_CELX="$(usex lua)"
+ -DENABLE_NLS="$(usex nls)"
+ -DENABLE_GLUT="$(usex glut)"
+ -DENABLE_GTK=OFF
+ -DENABLE_QT="$(usex qt5)"
+ -DENABLE_WIN=OFF
+ -DENABLE_THEORA="$(usex theora)"
+ )
+ cmake_src_configure
+}
+
+src_install() {
+ cmake_src_install
+
+ local size
+ for size in 16 22 32 48 ; do
+ newicon -s ${size} "${S}"/src/celestia/kde/data/hi${size}-app-${PN}.png ${PN}.png
+ done
+ newicon -s 128 "${S}"/src/celestia/gtk/data/${PN}-logo.png ${PN}.png
+ doicon -s scalable "${S}"/src/celestia/gtk/data/${PN}.svg
+
+ use glut && domenu ${PN}.desktop
+ if use qt5 ; then
+ sed \
+ -e "/^Name/s@\$@ (qt5 interface)@" \
+ -e "/^Exec/s@${PN}@${PN}-qt@" \
+ ${PN}.desktop > "${T}"/${PN}-qt5.desktop || die
+ domenu "${T}"/${PN}-qt5.desktop
+ fi
+ dodoc AUTHORS README TRANSLATORS *.txt
+}