[MacPorts] #57415: mpi portgroup: should not offer gcc variants that won't work (was: hdf5 should not offer gcc variants that won't work)

[MacPorts]

#57415: mpi portgroup: should not offer gcc variants that won't work
------------------------------+----------------------
  Reporter:  SebKeen          |      Owner:  (none)
      Type:  defect           |     Status:  assigned
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.5.4
Resolution:                   |   Keywords:
      Port:  hdf5, py-mpi4py  |
------------------------------+----------------------
Changes (by jmroot):

 * cc: seanfarley, dstrubbe, MarcusCalhoun-Lopez, mamoll (added)
 * owner:  mamoll => (none)
 * port:  hdf5 => hdf5, py-mpi4py


Comment:

 Additionally, the portgroup adds variants in some cases that depend on
 ports that simply don't exist. For example:
 {{{
 % port lint py37-mpi4py +gcc49
 --->  Verifying Portfile for py37-mpi4py
 Error: Unknown dependency: mpich-gcc49
 --->  1 errors and 0 warnings found.

 % port lint py37-mpi4py +clang37
 --->  Verifying Portfile for py37-mpi4py
 Error: Unknown dependency: mpich-clang37
 --->  1 errors and 0 warnings found.
 }}}

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Ticket URL: <https://trac.macports.org/ticket/57415#comment:3>
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