[MacPorts] #59320: py-numpy: Variant clang37 conflicts with gcc9

[MacPorts]

#59320: py-numpy: Variant clang37 conflicts with gcc9
------------------------+-----------------------
 Reporter:  ryandesign  |      Owner:  michaelld
     Type:  defect      |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.6.1
 Keywords:              |       Port:  py-numpy
------------------------+-----------------------
 [https://build.macports.org/builders/jobs-
 mirror/builds/122312/steps/mirror/logs/stdio Errors while mirroring
 distfiles on the buildbot]:

 {{{
 --->  Fetching distfiles for py37-numpy
 py37-numpy +gcc9
 Error: py-numpy: Variant clang37 conflicts with gcc9
 Error: mportopen file:///opt/local/var/buildworker/jobs/jobs-
 mirror/build/ports/python/py-numpy failed: Error evaluating variants
 py37-numpy +gcc5
 Error: py-numpy: Variant clang37 conflicts with gcc5
 Error: mportopen file:///opt/local/var/buildworker/jobs/jobs-
 mirror/build/ports/python/py-numpy failed: Error evaluating variants
 py37-numpy +gcc49
 Error: py-numpy: Variant clang37 conflicts with gcc49
 Error: mportopen file:///opt/local/var/buildworker/jobs/jobs-
 mirror/build/ports/python/py-numpy failed: Error evaluating variants
 py37-numpy +gcc6
 Error: py-numpy: Variant clang37 conflicts with gcc6
 Error: mportopen file:///opt/local/var/buildworker/jobs/jobs-
 mirror/build/ports/python/py-numpy failed: Error evaluating variants
 }}}

 Please make the clang37 variant the default on darwin 15 ''only if'' the
 user has not already selected another variant. See
 PortfileRecipes#default_variants.

 (The machine that runs the buildbot mirror job runs on darwin 15.)

-- 
Ticket URL: <https://trac.macports.org/ticket/59320>
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