anchor.diff:  		"url" = "http://downloads.sourceforge.net/sevenzip/7za920.zip";
   		"dir" = "7za";
   		"postinstall" = {
  -			function postinstall( [string]$dir ) {
  -				$script:7zip_exe = "$dir\7za.exe";
  -			};
  -			postinstall $args[0];
  +			$dir = $args[0];
  +			$script:7zip_exe = "$dir\7za.exe";
   		};
   	}
   
  
positive.code: 	$filename = download-archive $package.url $script:distribDir;
  	extract-archive $filename $dstDir ( !! $package.onlyFiles );
  
  	if ( $package.postinstall ) {
  		"`nInvoke command:";
  		$package.postinstall;
  		Invoke-Command -ScriptBlock $package.postinstall -ArgumentList $dstDir;
  	}
  }
  
  # =========================================================================
  
negative.code: 		"url" = "http://downloads.sourceforge.net/project/unxutils/unxutils/current/UnxUtils.zip";
  		"dir" = "x-unxutils";
  		"postinstall" = {
  			$dir = $args[0];
  			$src = "$dir\usr\local\wbin\*";
  			$dst = "$dir\bin";
  			mv -Force -Path $src -Destination $dst;
  		};
  	}
  
  