[MacPorts] #68910: linear_algebra PG: consider supporting alternative BLAS implementations

[MacPorts]

#68910: linear_algebra PG: consider supporting alternative BLAS implementations
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 Reporter:  barracuda156  |      Owner:  (none)
     Type:  enhancement   |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.8.1
 Keywords:                |       Port:  linear_algebra
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 We got quite a number of different BLAS now. Perhaps not all of them are
 meaningful candidates to consider, but some may.

 At least these are not something totally obscure:
 https://ports.macports.org/port/flexiblas
 https://ports.macports.org/port/blis

 Some other:
 https://ports.macports.org/port/blaspp (I am unable to make `lapackpp`
 build correctly though)
 https://ports.macports.org/port/psblas3 (updating it now, hopefully gonna
 fix it where it fails currently)
 https://ports.macports.org/port/AlphaSparse (this one is not well-
 supported by its upstream, it seems)

 I noticed that quite a number of math ports may randomly pick `flexiblas`,
 unless BLAS implementation is explicitly specified. Perhaps, rather add it
 as a credible variant?

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Ticket URL: <https://trac.macports.org/ticket/68910>
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