How resolve upgrade of arpack?

[Murray Eisenberg]

With MacPorts 2.1.3 installed, command "port outdated" shows, among others: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Command "port upgrade outdated" gives error: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?
  
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Murray Eisenberg                     murrayeisenberg at gmail.com
80 Fearing Street                      phone 413 549-1020 (H)
Amherst, MA 01002-1912