[Bioc-devel] System Requirements for imported packages

[Kasper Daniel Hansen]

What Martin is hinting at, is that if you end up depending on a package
which is really hard to install, your users indirectly will suffer.  And
that should be a consideration when you choose to depend on another package.

I have certainly had situations where I have tried to avoid depending on
package A because I did not like the additional dependencies for A.  You're
basically making yourself more vulnerable.  Of course, if package A is
awesome, it may be worth all this.

Kasper

On Wed, Apr 20, 2016 at 1:55 PM, Martin Morgan <
martin.morgan at roswellpark.org> wrote:

>
>
> On 04/20/2016 12:14 PM, Zach Skidmore wrote:
>
>> Hi All,
>>
>> I'm curious what the preferred method is for dealing with System
>> Requirements originating from an imported package. For example, if I had
>> a package that imported `biomaRt` which itself imports `XML` which has
>> the SystemRequirement `libxml2` how is that dealt with? Are package
>> installers expected to troubleshoot this (via install messages), should
>> I put this requirement and install instructions for `libxml2` in a
>> README for my package?
>>
>
> I think you should concern yourself only with the system dependencies of
> _your_ package, rather than trying to track or duplicate indirect system
> dependencies. If you're not satisfied with the way the original package
> 'helps' users to satisfy system dependencies, then you should communicate
> with the maintainer of the original package. That way your users, and
> indeed all direct and indirect users of the original package, benefit from
> improved instructions.
>
> Martin
>
>
>> Thanks for any input,
>> Zach
>>
>>
>
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