At https://fedoraproject.org/wiki/Packaging/Tcl I read
Both arch-specific and noarch Tcl extensions MUST use Requires: tcl(abi) = 8.5
which seems more than a little bizarre when every other part of the page tells you that you MUST avoid putting hard-wired Tcl version number dependencies into your specfile. And it also tells you exactly how to extract the Tcl version dynamically. So why isn't this a better solution?
Requires: tcl(abi) = %{tcl_version}
regards, tom lane
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