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List-Post: List-Help: List-Subscribe: , Cc: qemu-trivial@nongnu.org, Eduardo Habkost , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 1/14/20 5:20 AM, Daniel P. Berrang=C3=A9 wrote: > On Tue, Jan 14, 2020 at 11:08:16AM +0100, Thomas Huth wrote: >> On 13/01/2020 23.36, John Snow wrote: >>> >>> >>> On 1/9/20 4:51 AM, Thomas Huth wrote: >>>> Python 2 support has been removed, so we should now also remove >>>> the announcement text for the deprecation. >>>> >>>> Signed-off-by: Thomas Huth >>> >>> Reviewed-by: John Snow >>> >>>> --- >>>> qemu-deprecated.texi | 8 -------- >>>> 1 file changed, 8 deletions(-) >>>> >>>> diff --git a/qemu-deprecated.texi b/qemu-deprecated.texi >>>> index 7033e531de..8b23e98474 100644 >>>> --- a/qemu-deprecated.texi >>>> +++ b/qemu-deprecated.texi >>>> @@ -341,14 +341,6 @@ they have no effect when used with @option{-n} to= skip image creation. >>>> Silently ignored options can be confusing, so this combination of >>>> options will be made an error in future versions. >>>> =20 >>>> -@section Build system >>>> - >>>> -@subsection Python 2 support (since 4.1.0) >>>> - >>>> -In the future, QEMU will require Python 3 to be available at >>>> -build time. Support for Python 2 in scripts shipped with QEMU >>>> -is deprecated. >>>> - >>>> @section Backwards compatibility >>>> =20 >>>> @subsection Runnability guarantee of CPU models (since 4.1.0) >>>> >>> >>> Genuine question, I'm sorry: >>> >>> Is it worth documenting things we recently removed? >> >> Basically yes. In case of Python 2, it's not a QEMU feature that we >> remove here, but a build requirement, and we tell the users that we need >> at least Python 3.5 when they run "configure", so I'm not sure whether >> that needs to be explicitely mentioned again the docs beside our ChangeL= og? >=20 > In general changed build pre-requisites such as new minimum software > versions are documented in the release notes: >=20 > https://wiki.qemu.org/ChangeLog/5.0#Build_Information >=20 > We normally would not list build pre-requisites in the deprecation notes > at all, since they don't follow the deprecation process normally. We > just update minimum versions immediately that our supported OS build > platforms change due to an OS going end of life. So for example we > have in the past bumped gnutls, glib, nettle, gcc, etc min versions > with no warning. So the fact that Python 2 was mentioned in the > deprecations at all was slightly unusual. This is mostly just to be > nice to users since the OS platforms here aren't going EOL and still > ship Python 2, we simply don't wish to support it any more, since > the distros also all have Py 3. >=20 >=20 >> >>> Right now, we don't >>> really have these docs hosted in a searchable way online in a >>> per-version format. Once the notice is gone, it's gone from the mirror. >>> >>> I removed some bitmap functionality not too long ago and I created a >>> "Recently Removed" section as a bit of a troubleshooting guide should i= t >>> be needed. >>> >>> - Do we want this section? >>> - Should I remove it? >>> - Can we add historical docs to the website to see previous deprecated >>> docs in a searchable manner? >> >> I also once started a page in the Wiki here: >> >> https://wiki.qemu.org/Features/RemovedFeatures >> >> ... but apparently, it did not get enough attention yet, otherwise you >> would have noticed it before introducing the new chapter into the >> qemu-doc ... >> >> We definitely need one spot where we can document removed features. I >> don't mind which way we do it, either the qemu-doc or the wiki, but we >> should unify on one of the two. I guess the qemu-doc is the better place >> since we are tracking the deprecated features there already and one more >> or less just has to move the text to the other chapter when things get >> finally removed? >=20 > Yeah, I've said in the past that we should not be deleting deprecations > from the docs entirely. >=20 > If you look at GTK docs for example, you'll see they keep a record of > all incompatible or noteworth changes between release: >=20 > https://developer.gnome.org/gtk3/stable/gtk-migrating-3-x-to-y.html >=20 > IMHO, we should follow this and have an appendix of removed features, > with sub-sections per QEMU release listing each removed feature. Thus > deprecation docs just get moved to this appendix at the right time. >=20 > Regards, > Daniel >=20 Everything said makes sense to me. My review here stands, thanks! (Sorry for the derail.) --js