Re: [gentoo-user] Options for "emerge"

[Wols Lists]

On 20/02/2022 14:54, Arve Barsnes wrote:
> On Sun, 20 Feb 2022 at 15:40, Dr Rainer Woitok<rainer.woitok@×××××.com>  wrote:
>> But if I understand the "emerge" manual page correctly, "--changed-deps"
>> causes a rebuild of a package,  if one of its  dependencies has been re-
>> build, even though the package does not require the newer version of the
>> dependency.  So does it really make sense  to have this option hardcoded
>> in a script?   Or does it just cause  plenty of package rebuilds without
>> any real effect?  Likewise, what about "--deep"?  Should I keep it?
> "--deep" seems like a good idea, to minimise the chance of trouble,
> but "--changed-deps" does indeed seem excessive.
>
> I also have "--oneshot" in my updates, although I'm not sure if this
> actually makes a difference on a world update.

Oneshot just stops stuff being added by default to the world file, so on 
an update it'll have no effect whatsoever.
>
> I also have "--backtrack=100" to minimise the risk of portage not
> being able to find an upgrade path for some troublesome package. Just
> as "--deep" it will add to the time portage needs to calculate what
> packages to update, but it feels like I've had less instances of
> upgrade path troubles since adding it to my regular world update
> command.

:-) yes it seems most of my problems get solved by increasing backtrack 
so maybe I ought to do that too ...

What I'd also like is an option --dont-stop. Similar to keep-going, it 
would kick in earlier. Keep-going only kicks in once the real emerge is 
running. What I would like with dont-stop is if the dependency 
calculation gives up, it would start emerging whatever it's found so 
far. I've found when things really go pear-shaped updating a system for 
the first time in yonks, looking at and updating what's updateable 
enables the next attempt to get a little further, etc etc, until 
suddenly everything updates.

So basically, dont-stop would update everything it can.

Cheers,
Wol