The issue was that I was generating the tarball in MacOS and the section related adding the net.displaycal.DisplayCAL.appdata.xml file was not working when run through MacOS. Fixed by moving that code to an os independent path. The generated tarball is working find in MacOS and generating a new tarball from Linux is working too. Didn't have time to test the tarball generated with MacOS on Linux, but I reckon that it is going to run okay.
The issue was that I was generating the tarball in MacOS and the section related adding the
net.displaycal.DisplayCAL.appdata.xmlfile was not working when run through MacOS. Fixed by moving that code to an os independent path. The generated tarball is working find in MacOS and generating a new tarball from Linux is working too. Didn't have time to test the tarball generated with MacOS on Linux, but I reckon that it is going to run okay.