diff --git a/.hgignore b/.hgignore
index 6f3cc06..b0b9510 100644
--- a/.hgignore
+++ b/.hgignore
@@ -1 +1,2 @@
+build/
 \..*sw[op]
diff --git a/build.xml b/build.xml
new file mode 100644
index 0000000..a6041da
--- /dev/null
+++ b/build.xml
@@ -0,0 +1,55 @@
+<project name="Personal Issue Tracker">
+    <property file="project.properties"/>
+
+    <path id="groovy.all.path">
+        <fileset dir="${groovy.home}/embeddable">
+            <include name="**/*.jar"/>
+        </fileset>
+    </path>
+
+    <path id="groovy.cp">
+        <fileset dir="${groovy.home}/lib">
+            <include name="**/*.jar"/>
+        </fileset>
+        <fileset dir="${lib.dir}"/>
+    </path>
+
+    <taskdef name="groovyc"
+        classname="org.codehaus.groovy.ant.Groovyc"
+        classpathref="groovy.all.path"/>
+
+    <target name="clean">
+        <delete dir="${build.dir}"/>
+    </target>
+
+    <target name="compile">
+        <mkdir dir="${build.dir}/classes"/>
+        <groovyc
+            srcdir="${src.dir}"
+            destdir="${build.dir}/classes"
+            classpath="${groovyc.cp}"/>
+    </target>
+
+    <target name="build" depends="compile">
+        <mkdir dir="${build.dir}/jar"/>
+        <unjar dest="${build.dir}/classes">
+            <path refid="groovy.cp"/>
+        </unjar>
+        <jar
+            destfile="${build.dir}/jar/${build.jar}"
+            basedir="${build.dir}/classes"
+            compress="on">
+            <manifest>
+                <attribute name="Main-Class" value="${main.class}"/>
+            </manifest>
+        </jar>
+    </target>
+
+    <target name="build-lib" depends="clean,compile">
+        <mkdir dir="${build.dir}/jar"/>
+        <jar
+            destfile="${build.dir}/jar/${build.lib.jar}"
+            basedir="${build.dir}/classes"
+            compress="on"/>
+    </target>
+</project>
diff --git a/pit.groovy b/pit.groovy
deleted file mode 100755
index 58b3c90..0000000
--- a/pit.groovy
+++ /dev/null
@@ -1,185 +0,0 @@
-#!/usr/bin/groovy
-
-def cli = new CliBuilder(usage: '')
-cli.h(longOpt: 'help', 'Show help information.')
-cli.v(longOpt: 'verbose', 'Show verbose task information')
-cli.l(longOpt: 'list', 'List issues. Unless otherwise specified it lists all '
-    + 'sub projects and all unclosed issue categories.')
-cli.i(argName: 'id', longOpt: 'id', args: 1,
-    'Filter issues by id. Accepts a comma-delimited list.')
-cli.c(argName: 'category', longOpt: 'category', args: 1,
-    'Filter issues by category (bug, feature, task, closed). Accepts a '
-    + 'comma-delimited list.')
-cli.p(argName: 'priority', longOpt: 'priority', args: 1,
-    'Filter issues by priority. This acts as a threshhold, listing all issues '
-    + 'greater than or equal to the given priority.')
-cli.r(argName: 'project', longOpt: 'project', args: 1,
-    'Filter issues by project (relative to the current directory). Accepts a '
-    + 'comma-delimited list.')
-cli.s(longOpt: 'show-subprojects',
-    'Include sup projects in listing (default behaviour)')
-cli.S(longOpt: 'no-subprojects', 'Do not list subprojects.')
-
-def opts = cli.parse(args)
-def issuedb = [:]
-
-if (!opts) System.exit(1) // better solution?
-
-if (opts.h) cli.usage()
-
-def categories = ['bug','feature','task']
-if (opts.c) categories = opts.c.split(/[,\s]/)
-categories = categories.collect { Category.toCategory(it) }
-
-// build issue list
-issuedb = new Project(new File('.'),
-    new Filter('categories': categories,
-    'priority': (opts.p ? opts.p.toInteger() : 9),
-    'projects': (opts.r ? opts.r.toLowerCase().split(/[,\s]/).asType(List.class) : []),
-    'ids': (opts.i ? opts.i.split(/[,\s]/).asType(List.class) : []),
-    'acceptProjects': (opts.s || !opts.S)))
-
-// list first
-if (opts.l) issuedb.list('verbose': opts.v)
-
-// change priority second
-//else if (opts.cp)
-
-// change category third
-//else if (opts.cc)
-
-// new entry last
-
-enum Category {
-    BUG,
-    FEATURE,
-    TASK,
-    CLOSED
-
-    public static Category toCategory(String s) {
-        for(c in Category.values())
-            if (c.toString().startsWith(s.toUpperCase())) return c
-        throw new IllegalArgumentException("No category matches ${s}.")
-    }
-}
-
-class Project {
-
-    String name
-    Map<String, Issue> issues = [:]
-    Map<String, Project> projects = [:]
-
-    Project(File dir, Filter filter = null) {
-        dir.eachFile { child ->
-
-            // add sub projects
-            if (child.isDirectory())  {
-                if ( child.name ==~ /\d{4}/ ||  // just an issue folder
-                    (filter && !filter.accept(child.name)))
-                    return
-
-                // otherwise build and add to list
-                projects[(child.name)] =  new Project(child, filter)
-            } else if (child.isFile()) {
-                def issue
-                
-                // if exception, then not an issue
-                try { issue = new Issue(child) } catch (all) { return }
-
-                if (filter && !filter.accept(issue)) return
-
-                issues[(issue.id)] = issue
-            }
-        }
-    }
-    
-    public void eachIssue(Closure c) {
-        for (i in issues.values()) c.call(i)
-        for (p in projects.values()) p.eachIssue(c)
-    }
-
-    public void each(Filter filter = null, Closure c) {
-        def is = filter?.issueSorter ?: { it.id.toInteger() }
-        def ps = filter?.projectSorter ?: { it.name }
-
-        for (issue in issues.values().sort(is)) {
-            if (filter && !filter.accept(issue))
-                return
-
-            c.call(issue)
-        }
-
-        for (project in projects.values().sort(ps)) {
-            if (filter && !filter.accept(project))
-                return
-
-            c.call(project)
-            project.each(c)
-        }
-    }
-
-    public void list(Map options = [:]) {
-        if (!options.offset) options.offset = ""
-        if (!options.verbose) options.verbose = false
-
-        each(options.filter) {
-            if (it instanceof Project) {
-                println "\n${options.offset}${it.name}"
-                println "${options.offset}${'-'.multiply(p.name.length())}"
-            } else {
-                println "${options.offset}${it.id}(${it.priority}): " +
-                    "${it.category} ${it.title}"
-                if (options.verbose) println "\n${it.text}"
-            }
-        }
-    }
-}
-
-class Issue {
-
-    String id
-    Category category
-    int priority
-    String title
-    String text
-
-    Issue(File file) {
-
-        def matcher = file.name =~ /(\d{4})([bftc])(\d).*/
-        if (!matcher) return null
-
-        id = matcher[0][1]
-        category = Category.toCategory(matcher[0][2])
-        priority = matcher[0][3].toInteger()
-
-        file.withReader { title = it.readLine() }
-        text = file.text
-    }
-}
-
-class Filter {
-
-    List<Category> categories = null
-    List<String> projects = null
-    List<String> ids = null
-    int priority = 9
-    boolean acceptProjects = true
-    Closure projectSorter
-    Closure issueSorter
-
-    public boolean accept(Issue i) {
-        return (i.priority <= priority &&
-                (!categories || categories.contains(i.category)) &&
-                (!ids || ids.contains(i.id)))
-    }
-
-    public boolean accept(Project p) {
-        return (acceptProjects && 
-                (!projects || projects.contains(p.name)))
-    }
-
-    public boolean accept(String name) {
-        return (acceptProjects && 
-                (!projects || projects.contains(name)))
-    }
-}
diff --git a/project.properties b/project.properties
new file mode 100644
index 0000000..7acec89
--- /dev/null
+++ b/project.properties
@@ -0,0 +1,8 @@
+app.version=1.0
+build.dir=build
+build.jar=pit-${app.version}.jar
+build.lib.jar=lib${build.jar}
+groovy.home=/usr/share/groovy
+lib.dir=lib
+main.class=com.jdbernard.pit.PersonalIssueTracker
+src.dir=src
diff --git a/src/com/jdbernard/pit/Category.groovy b/src/com/jdbernard/pit/Category.groovy
new file mode 100644
index 0000000..f6edd51
--- /dev/null
+++ b/src/com/jdbernard/pit/Category.groovy
@@ -0,0 +1,14 @@
+package com.jdbernard.pit
+
+public enum Category {
+    BUG,
+    FEATURE,
+    TASK,
+    CLOSED
+
+    public static Category toCategory(String s) {
+        for(c in Category.values())
+            if (c.toString().startsWith(s.toUpperCase())) return c
+        throw new IllegalArgumentException("No category matches ${s}.")
+    }   
+}
diff --git a/src/com/jdbernard/pit/Filter.groovy b/src/com/jdbernard/pit/Filter.groovy
new file mode 100644
index 0000000..70eadd9
--- /dev/null
+++ b/src/com/jdbernard/pit/Filter.groovy
@@ -0,0 +1,28 @@
+package com.jdbernard.pit
+
+class Filter {
+
+    List<Category> categories = null
+    List<String> projects = null
+    List<String> ids = null
+    int priority = 9
+    boolean acceptProjects = true
+    Closure projectSorter
+    Closure issueSorter
+
+    public boolean accept(Issue i) {
+        return (i.priority <= priority &&
+                (!categories || categories.contains(i.category)) &&
+                (!ids || ids.contains(i.id)))
+    }
+
+    public boolean accept(Project p) {
+        return (acceptProjects && 
+                (!projects || projects.contains(p.name)))
+    }
+
+    public boolean accept(String name) {
+        return (acceptProjects && 
+                (!projects || projects.contains(name)))
+    }
+}
diff --git a/src/com/jdbernard/pit/Issue.groovy b/src/com/jdbernard/pit/Issue.groovy
new file mode 100644
index 0000000..f4d104b
--- /dev/null
+++ b/src/com/jdbernard/pit/Issue.groovy
@@ -0,0 +1,24 @@
+package com.jdbernard.pit
+
+public class Issue {
+
+    String id
+    Category category
+    int priority
+    String title
+    String text
+
+    Issue(File file) {
+
+        def matcher = file.name =~ /(\d{4})([bftc])(\d).*/
+        if (!matcher) return null
+
+        id = matcher[0][1]
+        category = Category.toCategory(matcher[0][2])
+        priority = matcher[0][3].toInteger()
+
+        file.withReader { title = it.readLine() }
+        text = file.text
+    }
+
+}
diff --git a/src/com/jdbernard/pit/PersonalIssueTracker.groovy b/src/com/jdbernard/pit/PersonalIssueTracker.groovy
new file mode 100644
index 0000000..8dce79b
--- /dev/null
+++ b/src/com/jdbernard/pit/PersonalIssueTracker.groovy
@@ -0,0 +1,51 @@
+package com.jdbernard.pit
+
+def cli = new CliBuilder(usage: '')
+cli.h(longOpt: 'help', 'Show help information.')
+cli.v(longOpt: 'verbose', 'Show verbose task information')
+cli.l(longOpt: 'list', 'List issues. Unless otherwise specified it lists all '
+    + 'sub projects and all unclosed issue categories.')
+cli.i(argName: 'id', longOpt: 'id', args: 1,
+    'Filter issues by id. Accepts a comma-delimited list.')
+cli.c(argName: 'category', longOpt: 'category', args: 1,
+    'Filter issues by category (bug, feature, task, closed). Accepts a '
+    + 'comma-delimited list.')
+cli.p(argName: 'priority', longOpt: 'priority', args: 1,
+    'Filter issues by priority. This acts as a threshhold, listing all issues '
+    + 'greater than or equal to the given priority.')
+cli.r(argName: 'project', longOpt: 'project', args: 1,
+    'Filter issues by project (relative to the current directory). Accepts a '
+    + 'comma-delimited list.')
+cli.s(longOpt: 'show-subprojects',
+    'Include sup projects in listing (default behaviour)')
+cli.S(longOpt: 'no-subprojects', 'Do not list subprojects.')
+
+def opts = cli.parse(args)
+def issuedb = [:]
+
+if (!opts) System.exit(1) // better solution?
+
+if (opts.h) cli.usage()
+
+def categories = ['bug','feature','task']
+if (opts.c) categories = opts.c.split(/[,\s]/)
+categories = categories.collect { Category.toCategory(it) }
+
+// build issue list
+issuedb = new Project(new File('.'),
+    new Filter('categories': categories,
+    'priority': (opts.p ? opts.p.toInteger() : 9),
+    'projects': (opts.r ? opts.r.toLowerCase().split(/[,\s]/).asType(List.class) : []),
+    'ids': (opts.i ? opts.i.split(/[,\s]/).asType(List.class) : []),
+    'acceptProjects': (opts.s || !opts.S)))
+
+// list first
+if (opts.l) issuedb.list('verbose': opts.v)
+
+// change priority second
+//else if (opts.cp)
+
+// change category third
+//else if (opts.cc)
+
+// new entry last
diff --git a/src/com/jdbernard/pit/Project.groovy b/src/com/jdbernard/pit/Project.groovy
new file mode 100644
index 0000000..717669f
--- /dev/null
+++ b/src/com/jdbernard/pit/Project.groovy
@@ -0,0 +1,73 @@
+package com.jdbernard.pit
+
+class Project {
+
+    String name
+    Map<String, Issue> issues = [:]
+    Map<String, Project> projects = [:]
+
+    Project(File dir, Filter filter = null) {
+        dir.eachFile { child ->
+
+            // add sub projects
+            if (child.isDirectory())  {
+                if ( child.name ==~ /\d{4}/ ||  // just an issue folder
+                    (filter && !filter.accept(child.name)))
+                    return
+
+                // otherwise build and add to list
+                projects[(child.name)] =  new Project(child, filter)
+            } else if (child.isFile()) {
+                def issue
+                
+                // if exception, then not an issue
+                try { issue = new Issue(child) } catch (all) { return }
+
+                if (filter && !filter.accept(issue)) return
+
+                issues[(issue.id)] = issue
+            }
+        }
+    }
+    
+    public void eachIssue(Closure c) {
+        for (i in issues.values()) c.call(i)
+        for (p in projects.values()) p.eachIssue(c)
+    }
+
+    public void each(Filter filter = null, Closure c) {
+        def is = filter?.issueSorter ?: { it.id.toInteger() }
+        def ps = filter?.projectSorter ?: { it.name }
+
+        for (issue in issues.values().sort(is)) {
+            if (filter && !filter.accept(issue))
+                return
+
+            c.call(issue)
+        }
+
+        for (project in projects.values().sort(ps)) {
+            if (filter && !filter.accept(project))
+                return
+
+            c.call(project)
+            project.each(c)
+        }
+    }
+
+    public void list(Map options = [:]) {
+        if (!options.offset) options.offset = ""
+        if (!options.verbose) options.verbose = false
+
+        each(options.filter) {
+            if (it instanceof Project) {
+                println "\n${options.offset}${it.name}"
+                println "${options.offset}${'-'.multiply(p.name.length())}"
+            } else {
+                println "${options.offset}${it.id}(${it.priority}): " +
+                    "${it.category} ${it.title}"
+                if (options.verbose) println "\n${it.text}"
+            }
+        }
+    }
+}