Index: InstallMojo.java
===================================================================
--- InstallMojo.java	(revisjon 697039)
+++ InstallMojo.java	(arbeidskopi)
@@ -25,7 +25,15 @@
 import org.apache.maven.plugin.MojoExecutionException;
 import org.apache.maven.project.artifact.ProjectArtifactMetadata;
 
+import java.io.BufferedReader;
 import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.Properties;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 import java.util.Iterator;
 import java.util.List;
 
@@ -69,12 +77,73 @@
     private Artifact artifact;
 
     /**
-     * @parameter expression="${project.attachedArtifacts}
+     * @parameter expression="${project.attachedArtifacts}"
      * @required
      * @readonly
      */
     private List attachedArtifacts;
 
+    /**
+     * @parameter expression="${project.properties}"
+     * @required
+     * @readonly
+     */
+    private Properties projectProperties;
+    
+    /**
+     * @parameter expression="${project.build.directory}"
+     * @required
+     * @readonly
+     */
+    private File targetDirectory;
+    
+    
+    private File insertProperties(File thePom) {
+        try {
+            BufferedReader br = new BufferedReader(new FileReader(thePom));
+            StringBuffer buf = new StringBuffer();
+            Pattern p = Pattern.compile("\\$\\{[a-zA-Z0-9_-]+\\}");
+            String s = null;
+            boolean changed = false;
+            Properties systemProperties = System.getProperties();
+            while((s = br.readLine()) != null) {
+                Matcher m = p.matcher(s);
+                while (m.find()) {
+                    String match = m.group();
+                    String key = match.substring(2, match.length()-1);
+                    String value = null;
+                    if (projectProperties != null && projectProperties.containsKey(key)) {
+                        value = projectProperties.getProperty(key);
+                    } else if (systemProperties.containsKey(key)) {
+                        value = systemProperties.getProperty(key);
+                    }
+                    if (value != null) {
+                        s = s.replaceAll("\\$\\{" + key + "\\}", value);
+                        changed = true;
+                    }
+                }
+                buf.append(s).append("\n");
+            }
+            if (changed) {
+                File target = new File(targetDirectory.getAbsolutePath() + File.separator + "maven-install-plugin");
+                if (!target.exists()) {
+                    target.mkdirs();
+                }
+                File newPom = new File(target, "pom.xml");
+                FileWriter fw = new FileWriter(newPom);
+                fw.write(buf.toString());
+                fw.flush();
+                fw.close();
+                thePom = newPom;
+            }
+        } catch (FileNotFoundException e) {
+            getLog().warn(e.getMessage());
+        } catch (IOException e) {
+            getLog().warn(e.getMessage());
+        }
+        return thePom;
+    }
+    
     public void execute()
         throws MojoExecutionException
     {
@@ -92,7 +161,7 @@
         {
             if ( isPomArtifact )
             {
-                installer.install( pomFile, artifact, localRepository );
+                installer.install( insertProperties(pomFile), artifact, localRepository );
             }
             else
             {