[MacPorts] #54646: subversion @1.9.7 does not build on Snow Leopard, Mac OS X 10.6.8, because "Berkeley DB 4.0.14 or 5.x wasn't found"

[MacPorts]

#54646: subversion @1.9.7 does not build on Snow Leopard, Mac OS X 10.6.8, because
"Berkeley DB 4.0.14 or 5.x wasn't found"
-------------------------+-------------------------
  Reporter:  ballapete   |      Owner:
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.4.1
Resolution:              |   Keywords:  snowleopard
      Port:  subversion  |
-------------------------+-------------------------

Comment (by ballapete):

 Replying to [comment:13 danielluke]:

 > Can you try simply `port select --set db none` ?

 Snafu. (That's the title of East Of Eden's second LP, see
 https://en.wikipedia.org/wiki/East_of_Eden_(band).)

 {{{
 root 286 /\ port select --set db none
 Selecting 'none' for 'db' failed: The specified version 'none' is not
 valid.
 root 287 /\ port select --summary
 Name     Selected      Options
 ====     ========      =======
 awscli   none          py27-awscli none
 clang    mp-clang-4.0  mp-clang-3.7 mp-clang-3.9 mp-clang-4.0 none
 cython   cython27      cython27 none
 db       db48          none
 gcc      mp-gcc6       gcc40 gcc42 llvm-gcc42 mp-gcc5 mp-gcc6 none
 llvm     mp-llvm-4.0   mp-llvm-3.7 mp-llvm-3.9 mp-llvm-4.0 none
 pip      pip27         pip27 none
 python   python27      python25-apple python26-apple python27 python36
 none
 python2  python27      python25-apple python26-apple python27 none
 python3  python36      python36 none
 }}}

 The select thing did not even notice that db48 was forcibly uninstalled.
 No, it did! There is only one option left, none, but db48 is still
 selected, i.e. nothing.

--
Ticket URL: <https://trac.macports.org/ticket/54646#comment:14>
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