Update IDEA download URL

build.xml

@@ -8,8 +8,8 @@
     <property name="cabal.lexer.flex.file" value="plugin/src/org/jetbrains/cabal/parser/Cabal.flex"/>
     <property name="haskell.lexer.result.file" value="plugin/src/org/jetbrains/haskell/parser/lexer/_HaskellLexer.java"/>
     <property name="haskell.lexer.flex.file" value="plugin/src/org/jetbrains/haskell/parser/lexer/Haskell.flex"/>
-    <property name="idea" value="${build.dir}/idea-IC-163.15188.11"/>
-    <property name="idea.download.url" value="https://download.jetbrains.com/idea/ideaIC-2016.3.6-no-jdk.tar.gz"/>
+    <property name="idea" value="${build.dir}/IDEA"/>
+    <property name="idea.download.url" value="https://www.jetbrains.com/intellij-repository/releases/com/jetbrains/intellij/idea/ideaIC/2017.1.4/ideaIC-2017.1.4.zip"/>
     <property name="plugin.destination" value="${build.dir}/haskell-plugin/lib/" />
     <property name="build.number" value="snapshot"/>
 
@@ -83,7 +83,6 @@
     </target>
 
     <!--cabal lexer-->
-
     <target name="compile.cabal.lexer">
         <sequential>
             <delete file="${cabal.lexer.result.file}"/>
@@ -92,14 +91,12 @@
         </sequential>
     </target>
 
-
-
     <!-- Unpack idea-*.zip file -->
     <target name="idea" depends="download.idea" description="Extract downloaded artifacts and set up idea.home">
         <delete dir="${idea}"/>
         <mkdir dir="${idea}"/>
         <basename property="idea.filename" file="${idea.download.url}"/>
-        <untar src="${build.dir}/${idea.filename}" dest="${build.dir}" compression="gzip"/>
+        <unzip src="${build.dir}/${idea.filename}" dest="${build.dir}/IDEA"/>
     </target>
 
     <!-- Download IntelliJ IDEA distribution -->