Re: Proposal to deprecated `fedpkg local`

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Dne 27. 01. 21 v 18:03 Gwyn Ciesla via devel napsal(a):


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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Wednesday, January 27, 2021 11:00 AM, Vít Ondruch <vondruch@xxxxxxxxxx> wrote:

Dne 27. 01. 21 v 17:38 Daniel P. Berrangé napsal(a):

On Wed, Jan 27, 2021 at 05:17:24PM +0100, Vít Ondruch wrote:

Hi,
I wonder, what would be the sentiment if I proposed to deprecated the
`fedpkg local` command. I don't think it should be used. Mock should be the
preferred way. Would there be anybody really missing this functionality?
While I understand that mock has the benefit of providing a well
defined build environment, with less scope for things going wrong,
that just isn't important to me most of the time. In fact I often
want to build against what I have installed locally, explicitly
not against what mock has in its build root.
So overall "fedpkg local" has the benefit that it is much faster
to run the build and simpler to get it to build what I want.
While there is certainly penalty in using mock, running repetitive
builds together with `--no-clean` option will hardly slow you down. Just
a few numbers.

1.  Starging from scratch after `mock --scrub=all`, every package have to
     be downloaded and installed:
$ time mock -r fedora-rawhide-x86_64 rubygem-net-ssh-5.2.0-2.fc34.src.rpm ... snip ... real    0m47,188s
     user    0m41,841s
     sys    0m6,040s
2) With warm cache, only the BRs are installed, running right after the
previous build:

$ time mock -r fedora-rawhide-x86_64 rubygem-net-ssh-5.2.0-2.fc34.src.rpm ... snip ... real    0m13,182s
     user    0m9,885s
     sys    0m2,701s
3) Without build root cleanup:

$ time mock -r fedora-rawhide-x86_64 rubygem-net-ssh-5.2.0-2.fc34.src.rpm -n ... snip ... real    0m7,563s
     user    0m6,139s
     sys    0m1,194s
I think this is acceptable penalty for keeping my system unpolluted and
giving me easy opportunity to start from scratch if I messed up or if my
dependencies have changed or what not.


Great! And you can keep doing that! That's a good thing to have. fedpkg local also works without network access, like on a train, if you have all your BuildRequires in place.


No difference here. Mock works fine without network, if you have your caches populated.


Vít



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