[MacPorts] #58932: py-tensorflow: reduce build time

[MacPorts]

#58932: py-tensorflow: reduce build time
----------------------------+--------------------------
  Reporter:  ryandesign     |      Owner:  emcrisostomo
      Type:  enhancement    |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  py-tensorflow  |
----------------------------+--------------------------

Comment (by ryandesign):

 Regarding this line that you added:

 {{{
 build.jobs [sysctl hw.physicalcpu]
 }}}

 I would suggest putting that inside the `build { ... }` block. Otherwise
 `sysctl hw.physicalcpu` will get run in all sorts of situations where it
 is not needed, such as when running `port info` or `port livecheck` or
 `portindex`.

 Also note that users are able to modify build.jobs in macports.conf or on
 the command line. For example a user could run `sudo port build
 py38-tensorflow build.jobs=1`. Since the purpose of this line is to reduce
 the number of jobs, you might want to verify that you will in fact be
 reducing it before changing it:

 {{{
 build {
     set physicalcpus [sysctl hw.physicalcpu]
     if {${build.jobs} > ${physicalcpus}} {
         build.jobs ${physicalcpus}
     }
     ...
 }
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/58932#comment:10>
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