Pants ivysettings.xml that works with local Android SDK

ivysettings.xml

<?xml version="1.0"?>
<!--
Copyright 2014 Pants project contributors (see CONTRIBUTORS.md).
Licensed under the Apache License, Version 2.0 (see LICENSE).
-->

<ivysettings>
  <property name="root.dir" value="${ivy.settings.dir}/../.." override="false"/>
  <property name="ivy.cache.dir" value="${user.home}/.ivy2/pants" override="false"/>
  <properties file="${root.dir}/build.properties" override="false"/>
  <properties environment="env" />

  <settings defaultResolver="chain-repos"/>

  <macrodef name="_remote_resolvers">
    <chain returnFirst="true">
      <ibiblio name="maven2"
               m2compatible="true"
               usepoms="true"
               root="https://repo1.maven.org/maven2/"/>

      <!-- This is just for twitter-hosted jvm tools - kill once they are published to maven
           central. -->
      <ibiblio name="maven.twttr.com-maven"
               m2compatible="true"
               usepoms="true"
               root="http://maven.twttr.com/"/>
    </chain>
  </macrodef>

  <property name="sbt.repo.relpath" value="[organization]/[module]/[revision]"/>
  <property name="sbt.repo.artifact" value="${sbt.repo.relpath}/[type]s/[module].[ext]"/>
  <property name="sbt.repo.pom" value="${sbt.repo.relpath}/poms/[module].pom"/>
  <property name="m2.repo.relpath" value="[organisation]/[module]/[revision]"/>
  <property name="m2.repo.pom" value="${m2.repo.relpath}/[module]-[revision].pom"/>
  <property name="m2.repo.artifact"
            value="${m2.repo.relpath}/[artifact]-[revision](-[classifier]).[ext]"/>

  <property name="pants-android.repo.artifact"
            value="[organization]/[artifact]-[revision](-[classifier]).[ext]"/>

  <property name="sbt.repo.dir" value="${user.home}/.ivy2/local" override="false"/>
  <property name="m2.repo.dir" value="${user.home}/.m2/repository" override="false"/>
  <property name="pants-android.repo.dir" value="${root.dir}/3rdparty/android" override="false"/>
  <property name="android.sdk"
            value="${env.ANDROID_HOME}/extras/android/m2repository/com/android/support" />
  <property name="android.repo.artifact-pattern"
            value="[module]/[revision]/[artifact]-[revision]"/>
  <resolvers>
    <chain name="chain-repos" returnFirst="true">
      <_remote_resolvers name="remote-repos"/>

      <!-- Fall back to local repositories
           The <filesystem> entries below are examples of how you can have ivy read from your
           local maven or sbt repos, primarily for getting -SNAPSHOTs to work when working
           with two different build systems.  If you don't need this feature, you might be
           better off leaving them commented out.  They can cause problems when your local
           repository diverges from remote repositories.
           NB: there is deep ivy magic working here and many stars must align to get -SNAPSHOTs
           picked up as they change:
           1.) A filesystem resolver must be used (as opposed to an ibiblio resolver with a file
               url).
           2.) The filesystem resolver ivy pattern must be a pom pattern and [module] must be used
               as the name (<artifactId>) component in the pom basename (as opposed to [artifact]).
               Its this bit that correctly gets transitive resolution working.
           3.) A custom cache with useOrigin="true" must be rigged - the default cache and the cache
               create via the ivy CLI with -cache do not useOrigin.  Its this bit combined with 1
               that provides a direct link to the local repo pom and jar.
      -->

      <!-- sbt standard -->
      <!--
      <filesystem name="local.sbt" m2compatible="false" local="true" checkmodified="true">
        <ivy pattern="${sbt.repo.dir}/${sbt.repo.pom}"/>
        <artifact pattern="${sbt.repo.dir}/${sbt.repo.artifact}"/>
      </filesystem>
      -->

      <!-- mvn standard -->
      <!--
      <filesystem name="local.m2" m2compatible="true" local="true" checkmodified="true">
        <ivy pattern="${m2.repo.dir}/${m2.repo.pom}"/>
        <artifact pattern="${m2.repo.dir}/${m2.repo.artifact}"/>
      </filesystem>
      -->
      <!-- 3rdparty/android, checked-in android jars. -->
      <filesystem name="local.pants-android" m2compatible="true" local="true" checkmodified="true">
          <ivy pattern="${pants-android.repo.dir}/${m2.repo.pom}"/>
          <artifact pattern="${pants-android.repo.dir}/${pants-android.repo.artifact}"/>
      </filesystem>

      <!-- Local Android SDK, as pointed to by the ANDROID_HOME environmental variable. -->
      <filesystem name="local.android" m2compatible="true" local="true" checkmodified="true">
          <ivy pattern="${android.sdk}/${android.repo.artifact-pattern}.[ext]" />
          <artifact pattern="${android.sdk}/${android.repo.artifact-pattern}.[ext]" />
          <artifact pattern="${android.sdk}/${android.repo.artifact-pattern}-sources.[ext]" />
          <artifact pattern="${android.sdk}/[${android.repo.artifact-pattern}-javadoc.[ext]" />
      </filesystem>
    </chain>
  </resolvers>

  <caches default="default" lockStrategy="no-lock" useOrigin="true">
    <cache name="default" basedir="${ivy.cache.dir}"/>
  </caches>
</ivysettings>