[OE-core] [PATCH] libcomps: put PV in filename

[Adrian Bunk]

On Tue, Mar 26, 2019 at 11:20:17AM +0100, Martin Jansa wrote:
> On Tue, Mar 26, 2019 at 10:00:52AM +0000, Burton, Ross wrote:
> > On Tue, 26 Mar 2019 at 01:39, Khem Raj <raj.khem at gmail.com> wrote:
> > > > This isn't a git snapshot recipe but a release that is fetched over it.  For
> > > > clarity, put the PV in the filename.
> > >
> > > I think its better to keep it as it is. since its easy to trace git log history.
> > 
> > So should I be renaming gcc-8.3.bb to gcc_http.bb?  If the argument is
> > that the filename should contain the transport protocol and PV is
> > embedded in the recipe so that git log is easier, we should be
> > applying that rule consistently.
> 
> FWIW: I agree with Khem.
> 
> http fetcher won't (usually) fetch different version just by changing 1
> variable inside the recipe and vice versa, renaming the recipe won't
> fetch different SRCREV with git.

Why should the name of the recipe depend on whatever fetcher is 
currently used?

If the same gcc release would be fetched from the upstream SVN,
would you argue that the recipe has to be renamed to gcc_svn.bb?

> If someone wants to update SRCREV in libcoms to be 10 commits behind
> 0.1.10, is he expected to rename the recipe back to libcomps_git.bb and
> re-add the PV variable (with new +git${SRCPV} suffix)?
> 
> I got used to "+git${SRCPV}" being dropped when the SRCREV matches
> exactly the git tag, but renaming the recipe and removing the PV seems
> too much, what is the benefit of doing that?

Is it actually a benefit to make it easy to switch from a release to 
some random git snapshot?

This is not something that should happen frequently.

> It's not for clarity or
> easier maintenance (at least for me), because PV next to SRCREV makes
> much more sense to me (and helps people not to forget updating both at
> the same time).

There are not only developers, but also users.

It is valuable to see from the filename whether it is a release
(and which release it is) or some VCS snapshot.

Not having the release there also loses the ability to use either
gcc_%.bbappend or gcc_8.3.0.bbappend, which are suitable for
different situations.

> Regards,

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed