ebuild: set up roverlay via pkg_config()

1 files changed, 141 insertions, 5 deletions

diff --git a/roverlay-9999.ebuild b/roverlay-9999.ebuild
index bcc4cec..0e21409 100644
--- a/roverlay-9999.ebuild
+++ b/roverlay-9999.ebuild
@@ -8,9 +8,10 @@ EAPI=4
 PYTHON_COMPAT="python2_7 python3_1 python3_2"
 PYTHON_USE="ssl"
 
-inherit base python-distutils-ng git-2
+inherit base python-distutils-ng git-2 user
 
 EGIT_REPO_URI='git://git.overlays.gentoo.org/proj/R_overlay.git'
+#EGIT_BRANCH='gsoc13/next'
 
 DESCRIPTION="Automatically generated overlay of R packages (SoC2012)"
 HOMEPAGE="http://git.overlays.gentoo.org/gitweb/?p=proj/R_overlay.git;a=summary"
@@ -18,15 +19,15 @@ SRC_URI=""
 
 LICENSE="GPL-2+"
 SLOT="0"
-IUSE="bzip2 +prebuilt-documentation"
+IUSE="-bzip2 +prebuilt-documentation"
 
 KEYWORDS=""
 
-DEPEND="
-	dev-python/setuptools
+_CDEPEND="dev-python/setuptools"
+DEPEND="${_CDEPEND}
 	!prebuilt-documentation? ( >=dev-python/docutils-0.9 )
 "
-RDEPEND="
+RDEPEND="${_CDEPEND}
 	sys-apps/portage
 	virtual/python-argparse
 "
@@ -60,3 +61,138 @@ python_install_all() {
 	#  (due to the default config file)
 	keepdir /etc/${PN}/{files,package-rules.d}
 }
+
+pkg_setup() {
+	enewgroup roverlay
+}
+
+pkg_config() {
+	## vars
+	local DEFAULT_CONF_ROOT="${ROOT}etc/${PN}"
+
+	local roverlay_user="roverlay"
+	local roverlay_group="roverlay"
+	#local user_is_root
+	local want_conf_import
+
+	local data_root="${ROOT}usr/share/${PN}"
+	local conf_root
+	local work_root
+
+	local input
+
+	## get user input
+	einfo "Enter user/uid that will run ${PN} (user has to exist!) ['${roverlay_user}']:"
+	# input= not strictly needed
+	input=; read input
+	[[ -z "${input}" ]] || roverlay_user="${input}"
+
+	egetent passwd "${roverlay_user}" 1>/dev/null || \
+		die "no such user/uid: ${roverlay_user}"
+
+	case "${roverlay_user}" in
+		'0'|'root')
+			#user_is_root=y
+
+			work_root="${ROOT}var/${PN}"
+			conf_root="${DEFAULT_CONF_ROOT}"
+			config_file="${conf_root}/R-overlay.conf"
+
+			einfo "config root is ${conf_root}"
+			want_conf_import=n
+		;;
+		*)
+			#user_is_root=n
+
+			# get user config location
+			input="$(egethome ${roverlay_user})"
+			[[ -d "${input}" ]] || die "user has no home directory: ${input}"
+
+			work_root="${input}/${PN}"
+			conf_root="${work_root}/config"
+			config_file="${work_root}/R-overlay.conf"
+
+			if [[ ! -e "${conf_root}" ]]; then
+				einfo "config root is ${conf_root} (will be created)"
+				want_conf_import=y
+			else
+				einfo "config root is ${conf_root} (already exists)"
+				want_conf_import=n
+			fi
+
+			einfo "Import default config (${DEFAULT_CONF_ROOT})? (y/n) ['${want_conf_import}']"
+			input=; read input
+			case "${input}" in
+				'')
+					true
+				;;
+				'y'|'n')
+					want_conf_import="${input}"
+				;;
+				*)
+					die "answer '${input}' not understood."
+				;;
+			esac
+		;;
+	esac
+
+	if [[ -e "${config_file}" ]]; then
+		einfo "This will overwrite ${config_file}!"
+		echo
+	fi
+
+	einfo "Enter the directory for 'work' data (overlay, distfiles, mirror) ['${work_root}']:"
+
+	input=; read input
+	[[ -z "${input}" ]] || work_root="${input}"
+
+	einfo "Enter additional variables (VAR=VALUE) [optional]:"
+	input=; read input
+
+	## print what would be done
+	local noconf="(not configurable)"
+	echo
+	einfo "Configuration:"
+	einfo "- user/uid             : ${roverlay_user}"
+	einfo "- group/gid            : ${roverlay_group} ${noconf}"
+	einfo "- work root            : ${work_root}"
+	einfo "- data root            : ${data_root} ${noconf}"
+	einfo "- config root          : ${conf_root}"
+	einfo "- import config        : ${want_conf_import}"
+	einfo "- additional variables : ${input:-<none>}"
+	einfo
+	einfo "Press Enter to continue..."
+	read
+
+	## do it
+	ebegin "Creating temporary config file"
+	/usr/bin/roverlay-mkconfig -O "${T}/${PF}.config" \
+		-W "${work_root}" -D "${data_root}" -C "${conf_root}" -- ${input-}
+	eend $? || die
+
+	if [[ "${want_conf_import}" == "y" ]]; then
+		[[ -d "${conf_root}" ]] || mkdir -p "${conf_root}" || \
+			die "cannot create ${conf_root}"
+
+		ebegin "Importing default config (${DEFAULT_CONF_ROOT})"
+		cp -dRu --preserve=mode,timestamps \
+			"${DEFAULT_CONF_ROOT}"/* "${conf_root}"/ && \
+			chown -Rh --from="root:root" \
+				"${roverlay_user}:${roverlay_group}" "${conf_root}"
+		eend $? || die
+	fi
+
+	ebegin "Creating directories"
+	/usr/bin/roverlay --config "${T}/${PF}.config" \
+		--target-uid ${roverlay_user} --target-gid ${roverlay_group} setupdirs
+	eend $? || die
+
+	ebegin "Copying new config file to ${config_file}"
+	cp --preserve=mode,timestamps "${T}/${PF}.config" "${config_file}" && \
+	chown "${roverlay_user}:${roverlay_group}" "${config_file}"
+	eend $? || die
+
+	echo
+	einfo "Configuration for user '${roverlay_user}' is complete."
+	einfo "You can run '${PN} --print-config' (as user) to verify it."
+}