[Rpm-maint] [rpm-software-management/rpm] Running a script before uninstall transaction (Issue #2116)

[Shreenidhi Shedi]

Hi All,

I have a requirement to run a script before an uninstall transaction.
`%pretrans` currently gets triggered for install/upgrade transactions, can we do something similar for uninstall transactions?

For example:

Main package is A, B & C are sub packages of A. B & C are dependent on A.

If I do `dnf erase -y A` or `rpm -e B C A` I want to run some commands before B and C get removed.
I can use `%preun A/B` but I have more than 10 sub packages in this spec and I don't want to add a `%preun` for each sub package and do it once before removal of any of the sub packages.

Is it possible to do so? 

--
Shedi

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