diff -Nru groovy-2.4.15/debian/changelog groovy-2.4.15/debian/changelog
--- groovy-2.4.15/debian/changelog	2018-04-08 19:16:43.000000000 -0300
+++ groovy-2.4.15/debian/changelog	2018-04-20 20:33:44.000000000 -0300
@@ -1,3 +1,14 @@
+groovy (2.4.15-1ubuntu1) UNRELEASED; urgency=medium
+
+  * Replace HTTP URLs with local files: LP: #1765885.
+    - debian/control: build depends on -doc packages so javadoc can
+      properly link the apis.
+    - debian/patches/10_use_local_docs.patch, debian/control: include
+      javadoc apis locally as invalid, unreacheable, or nonexistent
+      links cause the build to faild with openjdk-10.
+
+ -- Tiago Stürmer Daitx <tiago.daitx@ubuntu.com>  Fri, 20 Apr 2018 23:33:44 +0000
+
 groovy (2.4.15-1) unstable; urgency=medium
 
   * Team upload.
diff -Nru groovy-2.4.15/debian/control groovy-2.4.15/debian/control
--- groovy-2.4.15/debian/control	2018-04-08 19:01:19.000000000 -0300
+++ groovy-2.4.15/debian/control	2018-04-20 20:33:44.000000000 -0300
@@ -1,7 +1,8 @@
 Source: groovy
 Section: java
 Priority: optional
-Maintainer: Debian Java Maintainers <pkg-java-maintainers@lists.alioth.debian.org>
+Maintainer: Ubuntu Developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Debian Java Maintainers <pkg-java-maintainers@lists.alioth.debian.org>
 Uploaders: Felix Natter <fnatter@gmx.net>
 Build-Depends:
  ant,
@@ -9,10 +10,12 @@
  antlr,
  bnd (>= 2.1.0),
  debhelper (>= 11),
+ default-jdk-doc,
  default-jdk-headless | default-jdk,
  gradle-debian-helper,
  ivy,
  junit4,
+ junit4-doc,
  libasm-java (>= 6.0~alpha-2~),
  libbsf-java,
  libcommons-cli-java,
@@ -23,6 +26,7 @@
  libjline2-java,
  libqdox-java,
  libservlet3.1-java,
+ libservlet3.1-java-doc,
  libxstream-java,
  locales-all | language-pack-en,
  maven-repo-helper,
@@ -74,7 +78,7 @@
 Section: doc
 Architecture: all
 Depends: ${misc:Depends}
-Recommends: default-jdk-doc
+Recommends: default-jdk-doc, juni4-doc, libservlet3.1-java-doc
 Suggests: groovy
 Description: Agile dynamic language for the Java Virtual Machine (documentation)
  Groovy is an agile dynamic language for the JVM combining lots of great
diff -Nru groovy-2.4.15/debian/patches/10_use_local_docs.patch groovy-2.4.15/debian/patches/10_use_local_docs.patch
--- groovy-2.4.15/debian/patches/10_use_local_docs.patch	1969-12-31 21:00:00.000000000 -0300
+++ groovy-2.4.15/debian/patches/10_use_local_docs.patch	2018-04-20 20:33:30.000000000 -0300
@@ -0,0 +1,38 @@
+--- a/gradle/docs.gradle
++++ b/gradle/docs.gradle
+@@ -33,9 +33,11 @@ def javadocSpec = {
+         overview = rootProject.file('src/main/overviewj.html')
+         footer = doc.footer
+         source = rootProject.useIndy()?'1.7':'1.6'
+-        links('http://docs.oracle.com/javase/8/docs/api/', 'http://docs.oracle.com/javaee/7/api/',
+-                'http://commons.apache.org/proper/commons-cli/javadocs/api-release/', 'http://junit.org/junit4/javadoc/latest/',
+-                'http://docs.oracle.com/javaee/6/api/', 'http://www.antlr2.org/javadoc/')
++        //links('http://docs.oracle.com/javase/8/docs/api/', 'http://docs.oracle.com/javaee/7/api/',
++        //        'http://commons.apache.org/proper/commons-cli/javadocs/api-release/', 'http://junit.org/junit4/javadoc/latest/',
++        //        'http://docs.oracle.com/javaee/6/api/', 'http://www.antlr2.org/javadoc/')
++        links('file:///usr/share/doc/default-jdk-doc/api/', 'file:///usr/share/doc/libservlet3.1-java-doc/api',
++                'file:///usr/share/doc/junit4/api/')
+     }
+ }
+ 
+@@ -53,12 +55,14 @@ def groovydocSpec = {
+             overviewText = resources.text.fromFile(rootProject.file('src/main/overview.html'))
+         }
+         includePrivate = false
+-        link 'http://docs.oracle.com/javaee/7/api/', 'javax.servlet.', 'javax.management.'
+-        link 'http://docs.oracle.com/javase/8/docs/api/', 'java.', 'org.xml.', 'javax.', 'org.w3c.'
+-        link 'http://docs.groovy-lang.org/docs/ant/api/', 'org.apache.ant.', 'org.apache.tools.ant.'
+-        link 'http://junit.org/junit4/javadoc/latest/', 'org.junit.', 'junit.'
+-        link 'http://www.antlr2.org/javadoc/', 'antlr.'
+-        link 'http://commons.apache.org/proper/commons-cli/javadocs/api-release/', 'org.apache.commons.cli.'
++        link 'file:///usr/share/doc/libservlet3.1-java-doc/api', 'javax.servlet.', 'javax.management.'
++        link 'file:///usr/share/doc/default-jdk-doc/api/', 'java.', 'org.xml.', 'javax.', 'org.w3c.'
++        link 'file:///usr/share/doc/ant/api/', 'org.apache.tools.ant.'
++        link 'file:///usr/share/doc/junit4/api/', 'org.junit.'
++        //link 'http://docs.groovy-lang.org/docs/ant/api/', 'org.apache.ant.'
++        //link 'http://junit.org/junit4/javadoc/latest/', 'junit.'
++        //link 'http://www.antlr2.org/javadoc/', 'antlr.'
++        //link 'http://commons.apache.org/proper/commons-cli/javadocs/api-release/', 'org.apache.commons.cli.'
+ }
+ 
+ allprojects {
diff -Nru groovy-2.4.15/debian/patches/series groovy-2.4.15/debian/patches/series
--- groovy-2.4.15/debian/patches/series	2018-04-08 18:55:15.000000000 -0300
+++ groovy-2.4.15/debian/patches/series	2018-04-20 20:33:44.000000000 -0300
@@ -8,3 +8,4 @@
 transition_Gradle_3.1.patch
 08_GROOVY-8163.patch
 09_ignore_buildscan.patch
+10_use_local_docs.patch