ok - all normal distributons have a file created at build process with the used packages - it's called manifest or sources. we have both:http://ftp.spline.de/pub/siduction/iso/patience/gnome/amd64_2018-05-13_21-10/siduction-18.3.0-patience-gnome-amd64-201805132110.amd64.manifesthttp://ftp.spline.de/pub/siduction/iso/patience/gnome/amd64_2018-05-13_21-10/siduction-18.3.0-patience-gnome-amd64-201805132110.sourceskeep in mind that this is only an example - every flavour on every mirror has these files.