<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">But, if there are actually any ports that I have where +universal is the default, and is necessary, that would break them, and their chain of dependancies.  I don’t know if there are any like that, or how I can tell, except by manually reviewing info for each one.  Is there any other way?<br class=""><div class="">
<div class=""><br class="khtml-block-placeholder"></div><div class="">--Adam</div><div class=""><br class="khtml-block-placeholder"></div><div class=""><br class="khtml-block-placeholder"></div>

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<br class=""><div><blockquote type="cite" class=""><div class="">On Jan 12, 2017, at 11:04 AM, Russell Jones <<a href="mailto:russell.jones@physics.ox.ac.uk" class="">russell.jones@physics.ox.ac.uk</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
  
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    <div class="moz-cite-prefix">On 11/01/17 18:04, Adam Dershowitz
      wrote:<br class="">
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          <div class="">On Jan 11, 2017, at 10:05 AM, Russell Jones <<a moz-do-not-send="true" href="mailto:russell.jones@physics.ox.ac.uk" class=""></a><a class="moz-txt-link-abbreviated" href="mailto:russell.jones@physics.ox.ac.uk">russell.jones@physics.ox.ac.uk</a>>
            wrote:</div>
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              <div class="moz-cite-prefix">On 06/01/17 17:37, Adam
                Dershowitz wrote:<br class="">
              </div>
              <blockquote cite="mid:E0C5B039-6D3A-4F63-B9DF-A139C8590DF7@alum.mit.edu" type="cite" class=""> <br class="">
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                    <div class="">On Jan 6, 2017, at 9:49 AM, Russell
                      Jones <<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:russell.jones@physics.ox.ac.uk">russell.jones@physics.ox.ac.uk</a>>
                      wrote:</div>
                    <br class="Apple-interchange-newline">
                    <div class="">
                      <div bgcolor="#FFFFFF" text="#000000" class=""> On
                        06/01/17 14:28, Adam Dershowitz wrote:<br class="">
                        <blockquote cite="mid:7C26BBC2-17FA-46D2-A60E-0AFB2E90D81D@alum.mit.edu" type="cite" class="">
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                                  <br class="">
                                  > On Jan 6, 2017, at 9:04 AM,
                                  Russell Jones <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:russell.jones@physics.ox.ac.uk"></a><a class="moz-txt-link-rfc2396E" href="mailto:russell.jones@physics.ox.ac.uk"><russell.jones@physics.ox.ac.uk></a>
                                  wrote:<br class="">
                                  > <br class="">
                                  > On 06/01/17 13:22, Adam
                                  Dershowitz wrote:<br class="">
                                  >> On Jan 6, 2017, at 2:20 AM,
                                  Ryan Schmidt <a moz-do-not-send="true" class="moz-txt-link-rfc2396E" href="mailto:ryandesign@macports.org"></a><a class="moz-txt-link-rfc2396E" href="mailto:ryandesign@macports.org"><ryandesign@macports.org></a>
                                  wrote:<br class="">
                                  >>> On Jan 5, 2017, at 09:26,
                                  Adam Dershowitz wrote:<br class="">
                                  >>>> I just tried what you
                                  suggested for py27-numpy and it just
                                  activated without any error.<br class="">
                                  >>> Yes, there will not be an
                                  error at activation time. However, if
                                  you have anything installed that
                                  required py27-numpy to be universal,
                                  it will now be broken.<br class="">
                                  >>>> So, myports.txt has<br class="">
                                  >>>>  py27-numpy
                                  @1.11.3_0+gfortran (active)
                                  platform='darwin 15' archs='x86_64'<br class="">
                                  >>>> <br class="">
                                  >>>> And, after the
                                  migration it had installed both that
                                  and the +universal variant.<br class="">
                                  >>>> Yet, when I tried to
                                  activate the non-universal version it
                                  did it without complaint.  So, I
                                  really don’t understand why the
                                  +universal got built at all.<br class="">
                                  >>>> Any suggestions?<br class="">
                                  >>> I don't have any answers
                                  for you, beyond the usual reasons why
                                  a port is installed universal, which
                                  are:<br class="">
                                  >>> <br class="">
                                  >>> - you explicitly asked
                                  for it to be installed universal<br class="">
                                  >>> - you installed another
                                  port universal that depends on this
                                  port<br class="">
                                  >>> - you installed another
                                  port that is 32-bit only, and you are
                                  on a 64-bit machine, and the other
                                  port depends on this port (You can
                                  check if the other port says
                                  "supported_archs i386 ppc" (or the
                                  other way around))<br class="">
                                  >>> - it enables the
                                  universal by default, and possibly
                                  requires the universal variant to be
                                  used (You can check the portfile to
                                  see if "default_variants +universal"
                                  appears)<br class="">
                                  >> What seems really odd to me
                                  that I took I moved my myports.txt
                                  from one machine to another.  So, I
                                  used one machine to generate that
                                  list, and brought it to another
                                  machine to build.<br class="">
                                  >> Both are MacBook pros (one
                                  new and one old) and that same list,
                                  on the new machine, added a bunch of
                                  universal ports.  So, I don’t see how
                                  any of the items in the list above
                                  could do that.  If it was not
                                  universal on the old machine, why
                                  would it end up universal on the new
                                  machine?<br class="">
                                  >> Could going from 10.11 to
                                  10.12 make something required to be
                                  universal?  Or could going from Xcode
                                  7 to 8 make a port universal?  Because
                                  otherwise, I just don’t see why they
                                  should be different.<br class="">
                                  >> If anything, I would expect
                                  that the newer OS and newer hardware
                                  should be able to do more things as 64
                                  bit, so would require less universal
                                  stuff.<br class="">
                                  >> <br class="">
                                  >> —Adam<br class="">
                                  > Could you gzip and attach the
                                  list of ports from the old machine and
                                  the output of "port installed
                                  requested"?<br class="">
                                  > <br class="">
                                  > The approach I suggested can't
                                  work, I now realize, as variants
                                  aren't used for working out
                                  dependencies ( <a moz-do-not-send="true" href="https://trac.macports.org/wiki/FAQ#dependonvariant" class=""></a><a class="moz-txt-link-freetext" href="https://trac.macports.org/wiki/FAQ#dependonvariant">https://trac.macports.org/wiki/FAQ#dependonvariant</a>
                                  )<br class="">
                                  > <br class="">
                                  > Russell<br class="">
                                  > <br class="">
                                  <br class="">
                                  <br class="">
                                  Here are the two files.  <br class="">
                                  <br class="">
                                  I don’t believe that I have ever
                                  intentionally installed anything
                                  +universal.  So, I’m fairly sure that
                                  anything in this list that is
                                  universal is because of 3, or 4
                                  above.  But, when I then moved to the
                                  new machine, it proceeded to make a
                                  bunch more things universal.  <br class="">
                                  <br class="">
                                  As far as I’m concerned pretty much
                                  all of my ports should just be
                                  installed with default variants, so
                                  few, if any, should be universal.  As
                                  everything is now working, this is not
                                  a big deal.  But, it does mean that
                                  upgrades often must be built, instead
                                  of using the binary, which would be
                                  much faster and use less drive space. 
                                  <br class="">
                                  <br class="">
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                                  <br class="">
                                  thanks,<br class="">
                                  <br class="">
                                  —Adam</div>
                              </span></font></div>
                        </blockquote>
                        It looks like the extra +universal stuff comes
                        from the things that were marked +universal
                        installing all their dependencies +universal,
                        which is expected behaviour. It looks like the
                        restore script just installs the things listed
                        in the order given, so doesn't preserve the
                        variants exactly (+universal satisfies a request
                        to install with no variants, I think, though I'm
                        unsure). You could search and replace +universal
                        (i.e. remove all instances of it) in myports,
                        then tear-down and redo the install, I guess.<br class=""><p class="">Russell<br class="">
                        </p>
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                  </blockquote>
                </div>
                But, this list is from the old machine.  My question is
                why the new machine ended up with a lot more +universal.
                 For example, the list that I sent does not have
                +universal for py27-numpy, while the new machine, that I
                used the above list to install, did end up with
                +universal.  
                <div class="">If the prior machine did not require
                  +universal, based on the dependency tree, why would
                  the new machine require it?  Or was something broken
                  on the old machine, where it really did require
                  +universal, but never actually installed it that way,
                  and I happened never to hit that bug?  </div>
                <div class=""><br class="">
                </div>
                <div class="">—Adam</div>
              </blockquote>
              Well, in the scenario I'm thinking of, it would be because
              something was built +universal that depended on py27-numpy
              before py27-numpy was checked for whether it's installed
              by itself. It's possible to install programs -universal
              that are depended on by others that are +universal without
              error or warning, as you've seen. It also seems that link
              checking doesn't pick it up. I'm not sure how one goes
              about using the 32-bit portions of programs (as opposed to
              linking 32-bit binaries against them, which you do with
              the -m32 flag, IIRC) where the program is not 32-bit only.
              So it's possible you only ever used the 64-bit portions of
              the binaries and so didn't see any problems. I'll happily
              concede something else may be going on.<br class="">
              <br class="">
              Russell<br class="">
            </div>
          </div>
        </blockquote>
      </div>
      <br class="">
      <div class="">If you are correct is there any way to fix it?  One
        option would be to uninstall everything and then to avoid the
        migration script, and just to reinstall my list of requested
        ports and see what happens.  But, that will take some time.
         Especially, since a good number of ports end up building from
        source instead of binaries.  But, it could be that the reason
        for this is that they ended up being +universal, so they were
        not available on the buildbots.  </div>
      <div class="">It does seem odd that gcc6, which is only a build
        dependancies, is building +universal, as I would not expect that
        a compiler would have to match what it is building (32 bit v 64
        bit).  the only port that it is needed to build and shows up as
        universal is py27-numpy.  So, I would guess that is why it then
        gets forced to be universal.</div>
      <div class=""><br class="">
      </div>
      <div class="">—Adam</div>
      <div class=""><br class="">
      </div>
    </blockquote>
    Well, you could try something like this:<br class="">
    port installed | grep '+universal' | sed '<a class="moz-txt-link-abbreviated" href="mailto:s/@.*//">s/@.*//</a>' | xargs -n1 -IXYZ
    echo sudo port install XYZ -universal<br class="">
    (remove "echo" if the output looks sane).<br class="">
    <br class="">
    Russell<br class="">
  </div>

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