On windows, I use the GnuWin32 tar package.  When I try to use the package task it gave me an error that windows cannot fork.  Looking online, I find this blog post http://blog.labnotes.org/2005/11/03/creating-zip-and-tar-packages-with-rake-on-windows/ which has the following

Creating a zip package worked on the first try, but tar complained that it 'Cannot fork: Function not implemented' . It turns out that Cygwin's tar can't run gzip. So once again, it's time to fix the Rake source code. This time we're talking about rake/packagetask.rb, line 117 that calls tar with the z option. I replaced that one line with a separate call to tar and gzip:

 sh %{tar cvf #{package_name}.tar #{package_name}} if flag == 'z'   sh %{gzip #{package_name}.tar} end

You'll need to be a bit more fancy if you want to support both .tar.gz and .tgz suffixes, but this little fix will allow you to create .tar.gz.


I did this and the package task worked.
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