update nebula-bgme lilac

repo/nebula-bgme/lilac.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python3
+
+from lilaclib import *
+
+
+def get_latest_release_tag():
+    resp = s.get(
+        'https://api.github.com/repos/slackhq/nebula/releases/latest'
+    )
+    body = resp.json()
+    return body["tag_name"]
+
+
+def pre_build():
+    tag = get_latest_release_tag()
+    pkgver = tag.lstrip('v')
+
+    update_pkgver_and_pkgrel(pkgver, True)