Re: [bitbake-devel] [PATCH] data_smart: Pass flags through variable rename

From: Alex Kiernan <alex.kiernan@gmail.com>
To: Richard Purdie <richard.purdie@linuxfoundation.org>
Cc: bitbake-devel@lists.openembedded.org,
	Otavio Salvador <otavio.salvador@ossystems.com.br>,
	Alex Kiernan <alexk@zuma.ai>
Subject: Re: [bitbake-devel] [PATCH] data_smart: Pass flags through variable rename
Date: Thu, 9 Jun 2022 11:33:03 +0100	[thread overview]
Message-ID: <CAO5Uq5QPsf8Lj8qYCibMD-m+0R7Na_ipU4WehYL3Oqu_rk4dRA@mail.gmail.com> (raw)
In-Reply-To: <5e781972643ed99e2948ac5a908222a190678475.camel@linuxfoundation.org>

Not that I've found, but I'd really like to use it... I've a layer for
s6-rc (https://skarnet.org/software/s6-rc/) and defining the
configuration using this syntax works really well:

S6_RC_SERVICE_${BPN} ?= "longrun"
S6_RC_SERVICE_${BPN}[producer-for] ?= "${BPN}-log"
S6_RC_SERVICE_${BPN}-log ?= "longrun"
S6_RC_SERVICE_${BPN}-log[consumer-for] ?= "${BPN}"
S6_RC_SERVICE_${BPN}-log[notification-fd] ?= "3"
S6_RC_SERVICE_${BPN}-log[pipeline-name] ?= "${BPN}-pipeline"
S6_RC_SERVICE_${BPN}-log[run] ?= "${@ d.getVar('s6_rc_log') }"

Is the kind of thing I'd like to work.

On Thu, Jun 9, 2022 at 10:58 AM Richard Purdie
<richard.purdie@linuxfoundation.org> wrote:
>
> On Thu, 2022-06-09 at 08:06 +0100, Alex Kiernan wrote:
> > During variable expansion, the flags are not passed through but are
> > discarded which makes constructs such as:
> >
> >   ALTERNATIVE_TARGET:${PN}-foo[name] = "value"
>
> This is a tricky one. I don't think we've ever supported overrides and
> flags combined? Is this in use in metadata?
>
> Cheers,
>
> Richard

-- 
Alex Kiernan