How resolve upgrade of arpack?

Lawrence Velázquez larryv at
Fri Jun 21 08:25:35 PDT 2013

On Jun 21, 2013, at 11:07 AM, Murray Eisenberg <murrayeisenberg at> wrote:

> With MacPorts 2.1.3 installed, command "port outdated" shows, among others:
>  arpack                         3.1.2_1 < 3.1.3_0 
> Command "port upgrade outdated" gives error:
>  Error: arpack: Variant openmpi conflicts with gcc45
>  Error: Unable to open port: Error evaluating variants
> From "port installed" I have, among many others:
>  arpack @3.1.2_1+accelerate+gcc45+openmpi (active)
>  gcc45 @4.5.4_6 (active)
> How does one resolve this?

The arpack port was recently updated so that its compiler variants all conflict with each other. Update arpack with different variants. For instance:

    % sudo port clean arpack
    % sudo port -n upgrade --enforce-variants arpack +openmpi


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