wix - How can I use bind.FileVersion when harvesting using Heat? -

i've used...

<?define productversion="!(bind.fileversion.mylibrary.dll)" ?> 

... define version variable use in installers. first time i'm using heat.exe harvest files/folders need in installer (which includes mylibrary.dll) file called source.wxs.

if try build installer following error:

unresolved bind-time variable !(bind.fileversion.mylibrary.dll) 

it's product.wxs file productversion declared can't see source.wxs file has details of mylibrary.dll, know isn't true since if set productversion="1.0.0.0" installer builds , files installed correctly.

how can bind.fileversion 'see' mylibrary.dll?

edit

i can work if use non-human friendly file id source.wxs (see below), best solution?

  <?define productversion="!(bind.fileversion.fil023e197261ed7268770dde64994c4a55)" ?> 

you can edit output generated heat using xsl. way can transform id fil023e197261ed7268770dde64994c4a55 more readable can referenced in project. apply transform heatdirectory task have specify transforms attribute , set value file name of xsl file have create.

in xsl file you'll have manipulate xml generated heat. rename id attribute of file element can use following code:

<?xml version="1.0" encoding="utf-8"?>  <xsl:stylesheet   version="1.0"   xmlns:xsl="http://www.w3.org/1999/xsl/transform"   xmlns:wix="http://schemas.microsoft.com/wix/2006/wi"   xmlns:msxsl="urn:schemas-microsoft-com:xslt"   exclude-result-prefixes="msxsl">      <xsl:template match="//wix:file">     <xsl:variable name="filepath" select="@source" />     <xsl:variable name="filename" select="substring-after($filepath,'\')" />     <xsl:copy>       <xsl:attribute name="id">         <xsl:choose>           <xsl:when test="contains($filename,'\')">             <xsl:value-of select="substring-after($filename,'\')"/>           </xsl:when>           <xsl:otherwise>             <xsl:value-of select="$filename"/>           </xsl:otherwise>         </xsl:choose>       </xsl:attribute>     </xsl:copy>   </xsl:template> </xsl:stylesheet> 

read xsl @ w3schools , check out documentation of heatdirectory task.