Notes from the bug;
ebuild based on the 2.0.0 ebuild by Julian Simioni
updated SRC_URI, preferring Java 8 if not installed yet
cleaned up src_prepare.
updated initscript (added here)
Gentoo bug: 564604
Package-Manager: portage-2.2.24
--- /dev/null
+[Unit]
+Description=Elasticsearch
+After=network.target
+
+[Service]
+User=elasticsearch
+Environment=ES_INCLUDE=/usr/share/elasticsearch/bin/elasticsearch.in.sh
+ExecStart=/usr/share/elasticsearch/bin/elasticsearch -Des.default.path.conf=/etc/elasticsearch
+
+[Install]
+WantedBy=multi-user.target