[packagekit] package reinstallation

[Michal Minář]

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On 07/08/2014 09:31 AM, Richard Hughes wrote:
> Something like ALLOW_DOWNGRADE as a transaction flag would be 
> acceptable to me, although it would need a new PolicyKit action to
> go along with it.
Sounds good to me. ALLOW_REINSTALL would also be needed I guess. So if
you or any other proven committer have some more objections, please
raise them now.

To sum it up, with my limited PK insight, this enhancement would
comprise of:

 1. Addition of ALLOW_DOWNGRADE and ALLOW_REINSTALL flags to
    PkTransactionFlagEnum.
 2. Processing of these flags in install_files() and install_packages()
    functions of backends that properly support it. Leave the current
    behaviour ("error: already installed") for others.
 3. Add action ids "org.freedesktop.packagekit.package-reinstall" and
    "org.freedesktop.packagekit.package-downgrade" to
    org.freedesktop.packagekit.policy and handle them in
    pk-transaction.c.

I hope I haven't omitted anything crucial. I'll create an RFE bug in
upstream bugzilla to track this.

Thank you for valid concerns.

Michal M.
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