From: "Patrick W. Barnes" <nman64(a)n-man.com>
This is a common case. If the original proprietary program
directly save to an open format, then the contributor should use
(the GIMP) to convert the file from a proprietary format (PSD) to the
open format possible (XCF). It is the responsibility of the original
contributor to make this conversion.
XCF is not a open standard format like SVG or OpenDocument. XCF is a
format that happens to have the source code available that reads and
writes that format, otherwise XCF isn't documented well.
I do think it is a good idea to encourage the use of open source tools
by distributing layouts and other files in the _native_ format of those
open source tools. That would include the native format of Scribus (
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