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[bug#27344] [PATCH v3 7/8] gnu: Add qucs.

From: Theodoros Foradis
Subject: [bug#27344] [PATCH v3 7/8] gnu: Add qucs.
Date: Thu, 12 Oct 2017 20:07:26 +0300


Ludovic Courtès writes:

> Hi,
> Theodoros Foradis <address@hidden> skribis:
>> * gnu/packages/engineering.scm (qucs): New variable.
> [...]
>> +    (propagated-inputs
>> +     `(("gcc-toolchain" ,gcc-toolchain-5))) ; for freehdl
> What’s the reason for this?
> Propagated inputs should be used sparsely because they “pollute” user
> profiles.  Here we’d be forcing a big package, and a specific version of
> that, in user profiles, which is not OK.
> Apart from that the patch LGTM though, so if we can remove these two
> lines, we can commit.

Freehdl is a VHDL to C compiler, so for qucs and qucs-s to be able to do
VHDL simulations, there should be a gcc toolchain and libtool in the
user environment (libtool should be propagated as well, after the phase
removal from the freehdl package).

I think it *should* be OK to remove gcc-toolchain from the
propagated-inputs, if we provide the user with some kind of message,
that they should add a gcc-toolchain and libtool in their environment if
they want to do VHDL simulations.

Maybe it should be preferable to add a message along those lines in the
package descriptions of those 2 packages (qucs and qucs-s)?


Theodoros Foradis

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