--- a/merge_pcr_duplicates.xml	Sat Dec 19 06:16:22 2015 -0500
+++ b/merge_pcr_duplicates.xml	Tue Jan 26 04:38:27 2016 -0500
@@ -1,11 +1,15 @@
-<tool id="merge_pcr_duplicates.py" name="Merge PCR duplicates" version="0.1.0">
+<tool id="merge_pcr_duplicates.py" name="Merge PCR duplicates" version="0.2.0">
   <description>according to random barcode library.</description>
   <macros>
     <import>macros.xml</import>
   </macros>
   <expand macro="requirements" />
   <expand macro="stdio" />
-  <version_command>python merge_pcr_duplicates.py --version</version_command>
+  <requirements>
+      <requirement type="package" version="4.1.0">gnu_awk</requirement>
+      <requirement type="package" version="8.22">gnu_coreutils</requirement>
+  </requirements>
+  <version_command>python $__tool_directory__/merge_pcr_duplicates.py --version</version_command>
   <command interpreter="python"><![CDATA[merge_pcr_duplicates.py
 #if $positional_1 and $positional_1 is not None:
 $positional_1
@@ -18,7 +22,7 @@
 > $default]]></command>
   <inputs>
     <param area="false" label="bed6 file containing alignments." name="positional_1" type="data" format="bed"/>
-    <param area="false" label="fasta barcode library." name="positional_2" type="data" format="fastq"/>
+    <param area="false" label="fastaq barcode library." name="positional_2" type="data" format="fastq"/>
   </inputs>
   <outputs>
     <data format="bed" hidden="false" name="default"/>