Alans answer is probably the best, but
`BAR_BIN`: '`which bar`'
might work as an alternativ to the Tcl specific hack (untested).
On Mon, Jan 8, 2018 at 2:01 PM, Alan O'Cais <a.oc...@fz-juelich.de> wrote:
> Hi Caspar,
>
> You can use
> modextravars = { 'BAR_BIN': '%(installdir)s/bin'}
> in the Bar easyconfig. If Bar is a dep of Foo, then when Foo is loaded Bar
> will be too and the value will be set. If you *only *want this to be set
> if Foo is loaded then that is custom behaviour and you will need to write a
> custom easyblock for the wrapper software (I don't see another way around
> it).
>
> Kind regards,
>
> Alan
>
> On 8 January 2018 at 13:17, Caspar van Leeuwen <
> caspar.vanleeu...@surfsara.nl> wrote:
>
>> I'm sorry, maybe I should have clarified: Foo requires BAR_BIN to be
>> present *at runtime*, so yes, I really do want it to be set in the
>> module file of Foo. Foo provides a (GUI) wrapper for Bar, but it needs to
>> know the location of the Bar binary. Rather than searching the path - as
>> other programs might have done -, Foo uses the BAR_BIN environment variable
>> to locate and call Bar (in fact, the installation instructions for Foo list
>> that you have to set BAR_BIN).
>>
>> Regards,
>>
>> Caspar
>>
>> ------------------------------
>> *From: *"Alan O'Cais" <a.oc...@fz-juelich.de>
>> *To: *"easybuild" <easybuild@lists.ugent.be>
>> *Sent: *Monday, 8 January, 2018 12:38:32
>> *Subject: *Re: [easybuild] Use of EBROOT of a dependency as modextravar
>>
>> I think you are misunderstanding the scope of modextravars, it is there
>> to set additional variables in the resultant module file from the
>> installation (it is not relevant to the install process of the software,
>> only the final module file that is written). The modextravars should be set
>> in the Bar easyconfig if you wish to leverage it in Foo? Otherwise you just
>> use something like
>>
>> preconfigopts = 'BAR_BIN=$EBROOTBAR/bin '
>>
>> in the Foo easyconfig.
>>
>> On 8 January 2018 at 12:29, Caspar van Leeuwen <
>> caspar.vanleeu...@surfsara.nl> wrote:
>>
>>> Dear EasyBuilders,
>>>
>>>
>>> Question: I have a Package Foo that provides a wrapper for a software
>>> package Bar. Thus, in the EasyConfig for Foo, I list Bar as a dependency.
>>>
>>>
>>> Now, Foo requires an environment variable BAR_BIN to be set that points
>>> to the Bar binary. Thus, what I would like to do in the Foo EasyConfig is
>>> something like:
>>>
>>>
>>> modextravars = {‘BAR_BIN’: ‘$EBROOTBAR/bin’}
>>>
>>>
>>> This doesn’t work: I get an error (something like ‘no variable
>>> EBROOTBAR’). I presume the reason is that in the modextravars step for
>>> 'Foo', the 'Bar' module isn’t actually loaded - thus EBROOTBAR is not set.
>>>
>>>
>>> I could use $root (which points to the FOO root, and does exist when
>>> modextravars is executed) and peal off the …/Foo/(version)-(toolchain),
>>> then add .../Bar/(version)-(toolchain), but this feels like a very dirty
>>> solution.
>>>
>>>
>>> Does anyone know of an elegant way to achieve this? And just to check:
>>> is it correct that the dependencies are not loaded when modextravars is
>>> executed?
>>>
>>>
>>> Best regards,
>>>
>>>
>>> Caspar van Leeuwen
>>>
>>
>>
>>
>> --
>> Dr. Alan O'Cais
>> E-CAM Software Manager
>> Juelich Supercomputing Centre
>> Forschungszentrum Juelich GmbH
>> 52425 Juelich, Germany
>>
>> Phone: +49 2461 61 5213 <02461%20615213>
>> Fax: +49 2461 61 6656 <02461%20616656>
>> E-mail: a.oc...@fz-juelich.de
>> WWW: http://www.fz-juelich.de/ias/jsc/EN
>>
>>
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>>
>
>
> --
> Dr. Alan O'Cais
> E-CAM Software Manager
> Juelich Supercomputing Centre
> Forschungszentrum Juelich GmbH
> 52425 Juelich, Germany
>
> Phone: +49 2461 61 5213 <+49%202461%20615213>
> Fax: +49 2461 61 6656 <+49%202461%20616656>
> E-mail: a.oc...@fz-juelich.de
> WWW: http://www.fz-juelich.de/ias/jsc/EN
>
