From: Jan Nieuwenhuizen <janneke@gnu.org>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: 32749@debbugs.gnu.org
Subject: bug#32749: package-with-explicit-inputs leaks-in additional inputs
Date: Tue, 18 Sep 2018 17:03:36 +0200 [thread overview]
Message-ID: <87in323l13.fsf@gnu.org> (raw)
In-Reply-To: <87d0taj2gm.fsf@gnu.org> ("Ludovic \=\?utf-8\?Q\?Court\=C3\=A8s\=22'\?\= \=\?utf-8\?Q\?s\?\= message of "Tue, 18 Sep 2018 16:38:01 +0200")
Ludovic Courtès writes:
>> I tried this! The dependencies look OK, but the package won't build --
>> there's no tar, make etc.
>
> Ah, true!
>
>> ...but that looks a bit strange: if we have to mention the inputs a
>> second time the advantage over using the `gnu-make-no-implicit-inputs'
>> package description becomes real small?
>
> The key thing is that ‘package-with-explicit-inputs’ works recursively:
> it adds (it does *not* replace) inputs to the whole package graph.
Ah, cool!
> Consider this:
>
> (define x
> (let ((p (package-with-explicit-inputs gnu-make
> (%bootstrap-inputs+toolchain)
> …)))
> …))
>
> Here ‘%bootstrap-inputs+toolchain’ is called from the top level, when
> ‘%current-system’ has its default value. So if you’re on x86_64, you
> get the x86_64 inputs.
Doh'! The let is at toplevel...yeah that makes sense.
> So it’s not a bug per se, but it’s definitely an annoyance.
I agree, indeed it's rather a problem of interaction between
--system/(%current-system).
> I just realized that there’s already a fix for this, which is to pass
> ‘package-with-explicit-inputs’ a procedure rather than the input list,
> like this:
>
> (package-with-explicit-inputs gnu-make
> %bootstrap-inputs+toolchain
> …)
>
> Does it work for you?
Yes! I'm reverting my `...leak' commits and create thunks as input of
package-with-explicit-inputs. Thanks!
janneke
next prev parent reply other threads:[~2018-09-18 15:19 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-17 10:03 bug#32749: package-with-explicit-inputs leaks-in additional inputs Jan Nieuwenhuizen
2018-09-17 15:59 ` Jan Nieuwenhuizen
2018-09-17 20:26 ` Ludovic Courtès
2018-09-18 4:23 ` Jan Nieuwenhuizen
2018-09-18 14:38 ` Ludovic Courtès
2018-09-18 15:03 ` Jan Nieuwenhuizen [this message]
2018-09-19 20:42 ` Ludovic Courtès
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