add revert command to revert a package to a rev

[lethliel]

This adds a revert command to restore a specific revision
of a package.

Basically this is just a osc copypac -r <rev> <proj> <pac> <proj>

implements #808

[marcus-h]

On 2020-07-07 01:23:56 -0700, Marco Strigl wrote: This adds a revert command to restore a specific revision of a package.

Hmm I'm not sure if the command does the "expected" thing [1] (from an average user's POV). Let's try to clarify the "expected" semantics first (note: maybe it already does the "expected" thing:) ). If the command is executed in a package wc, should we also reset the local wc state (see [2])? [1] #808 (comment) [2] #808 (comment)

[lethliel]

@mcepl Perhaps you can clarify if this is the expected behavior.
At least it is what I understood from your script.

[mcepl]

On 2020-07-07 01:23:56 -0700, Marco Strigl wrote:
If the command is executed in a package wc, should we also reset the local wc state (see [2])?

I would be completely OK if the command complained that the working directory is in “dirty” state (i.e., there are non-commited changes) and refused to continue. I believe some other subcommands (sr?) do exactly that.

[dmach]

This pull request has been in a draft state for quite some time.
Could you either finish it, close it or add a comment that you're still planning to work on it?

[Thaodan]

On 2020-07-07 01:23:56 -0700, Marco Strigl wrote:
If the command is executed in a package wc, should we also reset the local wc state (see [2])?

I would be completely OK if the command complained that the working directory is in “dirty” state (i.e., there are non-commited changes) and refused to continue. I believe some other subcommands (sr?) do exactly that.

If it would also have an option to force that would be good. Something like git's hard and mixed reset would be nice. I.e. for mixed reset to only reset but not commit.