Re: [gentoo-dev] [PATCH v2 3/3] gnuconfig.eclass: use BDEPEND, BROOT where available (drop support for EAPI <4)

[Sam James]

> On 5 Apr 2021, at 17:24, Ulrich Mueller <ulm@g.o> wrote:
>
>>>>>> On Mon, 05 Apr 2021, Sam James wrote:
>
>> +	4|5|6)
>> +		DEPEND="
>> +			sys-apps/grep
>> +			sys-devel/gnuconfig
>> +		"
>> +		;;
>> +	7)
>> +		BDEPEND="
>> +			sys-apps/grep
>
> We usually don't add basic tools like grep to dependencies.

Few points:

1) @system varies between profiles anyway which makes it hard to fully
rely on;

2) As a few of us have discussed in #gentoo-portage in the past, continuing
this trend of not explicitly stating dependencies makes parallelism in Portage
difficult. You can try this with —implicit-system-deps=n, but we really need
to be stating what we use explicitly.

The benefit is enhanced parallelism and the downside is being _slightly_ more
verbose in some ebuilds;

3) Implicit dependencies make it hard for us to ever actually swap implementations;

4) This helps when creating minimal systems without Portage in it.