gentoo-overlay/dev-java/gwt/files/gwt-2.8.2-build-system.patch

--- gwt-2.8.2-orig/common.ant.xml	2017-10-18 22:39:31.000000000 +1100
+++ gwt-2.8.2/common.ant.xml	2020-01-13 13:23:58.653719957 +1100
@@ -277,9 +277,7 @@
 
   <macrodef name="gwt.getgitinfo" description="Identifies the GIT info of a workspace">
     <sequential>
-      <exec executable="git" searchpath="true" outputproperty="gwt.gitrev">
-        <arg line="rev-parse --short HEAD"/>
-      </exec>
+      <property name="gwt.gitrev" value="faff18e7a1f065e3a4ac4ef32ab5cce394557070"/>
       <!-- Generally, filtering requires a sentinel file so that changes to git rev will
          be noticed as invalidating the previously-generated filter output.  This property
          names where such a sentinel lives; it is tested with <available/> and created