diff --git a/clients/android/devenv/Dockerfile b/clients/android/devenv/Dockerfile
index fcd40cec4..9af0a8c64 100644
--- a/clients/android/devenv/Dockerfile
+++ b/clients/android/devenv/Dockerfile
@@ -1,13 +1,20 @@
 # Build environment in which to build the Camlistore Android app.
+#
+# This builds on https://index.docker.io/u/wasabeef/android/
 
 FROM wasabeef/android
 MAINTAINER bradfitz <brad@danga.com>
 
-# Don't need this, since we're just using the archive URL to fetch Go.
+# Don't need mercurial yet, since we're just using the archive URL to fetch Go.
 # But it's possible we may want to switch to using hg, in which case:
 # RUN yum -y install mercurial
 
+# Update the GOVERS to depend on a new version of Go.
+#
+# The ec5195954667 version is in the Go 1.3 dev cycle, after I fixed some net/http
+# bugs (that are also worked around in Camlistore, but...)
 ENV GOVERS ec5195954667
+
 RUN cd /usr/local && curl -O http://go.googlecode.com/archive/$GOVERS.zip
 RUN cd /usr/local && unzip -q $GOVERS.zip
 RUN cd /usr/local && mv go-$GOVERS go
@@ -21,10 +28,7 @@ RUN echo y | android update sdk -u -t build-tools-19.0.1
 
 ENV ANDROID_HOME /usr/local/android-sdk-linux
 ENV ANT_HOME /usr/local/apache-ant-1.9.2
-ENV GRADLE_HOME /usr/local/gradle-1.9
 ENV PATH $PATH:$ANDROID_HOME/tools
 ENV PATH $PATH:$ANDROID_HOME/platform-tools
 ENV PATH $PATH:$ANT_HOME/bin
-ENV PATH $PATH:$MAVEN_HOME/bin
-ENV PATH $PATH:$GRADLE_HOME/bin
 ENV IN_DOCKER 1