Baffled by output from `port dependents'

[Mark Dickinson]

On 3/6/07, Christian Voelker <C.Voelker at gmx.net> wrote:
> Hi,
>
> Am 03.03.2007 um 19:04 schrieb Mark Dickinson:
>
> > $> port dependents bzip2
> > ImageMagick depends on bzip2
> > ImageMagick depends on bzip2
> > ...
> >
> > Why all the repetitions?  I only have one active copy of ImageMagick
> > installed, and all inactive versions have been uninstalled:
>
> Sure? Then, it should not hurt to type
> $> port uninstall inactive

Thank you for your replies.  Here's the result of `port uninstall inactive':

fibonacci:~ dickinsm$ sudo port uninstall inactive
Password:
--->  Unable to uninstall mpfr 2.2.1_0+darwin_8, the following ports
depend on it:
--->    gcc41
--->    gcc40
--->    gcc40
--->    gcc41
--->    gcc41
Error: port uninstall failed: Please uninstall the ports that depend
on mpfr first.

and `port echo inactive' gives me only:

mpfr                           @2.2.1_0+darwin_8

(the result of a recent upgrade).  `port selfupdate' tells me that
`DarwinPorts base version 1.320 installed' and `The MacPorts
installation is not outdated and so was not updated'.  And the system
is OS X 10.4.8.  MacPorts was installed in as standard a way as
possible, as far as I know.

I've been trying to understand the source to see where the `port
dependents' command is getting its information from, but my
understanding of Tcl is close to nonexistent.  Do I understand
correctly that the `port registry' is not a single file, but the
collection of information coming from the files in subdirectories of
/opt/local/var/db/dports/receipts?

The feature isn't limited to ImageMagick and bzip2;  for example:

fibonacci:~ dickinsm$ port dependents readline
ghc depends on readline
gnuplot depends on readline
darcs depends on readline
py-readline depends on readline
freeciv depends on readline
gnuplot depends on readline
hugs98 depends on readline
ghc depends on readline
ghc depends on readline
darcs depends on readline
ruby depends on readline
ruby depends on readline
ghc depends on readline
bash depends on readline
py25-readline depends on readline
sqlite3 depends on readline
ghc depends on readline
octave depends on readline

All this is really not a problem in practice---all the ports that I
need are working perfectly;  I'd just dearly like to understand what's
going on.  Finally, here's the output of `port installed' (with all
the extra embarrassment that goes with letting everyone else see
exactly what I do with my computer...)

Any clues as to what's going on would be appreciated.

Mark

fibonacci:~ dickinsm$ port installed
The following ports are currently installed:
  apr @1.2.8_0 (active)
  apr-util @1.2.8_2 (active)
  aquaterm @1.0.1_0+darwin_8 (active)
  atk @1.12.4_0 (active)
  auctex @11.83_0+devel (active)
  audiofile @0.2.6_0 (active)
  autoconf @2.61_0 (active)
  automake @1.10_0 (active)
  bash @3.2.9_1 (active)
  bzip2 @1.0.4_1 (active)
  cairo @1.2.6_0 (active)
  curl @7.16.1_0+darwin_8 (active)
  darcs @1.0.8_1 (active)
  db4 @4.3.29_0+darwin_8 (active)
  db44 @4.4.20_1+darwin_8 (active)
  dejagnu @1.4.4_0 (active)
  dos2unix @3.1_0 (active)
  emacs-devel @22.0.50.1-20060622_2+carbon+darwin_8 (active)
  esound @0.2.36_0 (active)
  expat @2.0.0_1 (active)
  fftw-3 @3.1.2_0 (active)
  file @4.19_1 (active)
  fontconfig @2.4.2_0+macosx (active)
  freeciv @2.0.8_0 (active)
  freetype @2.1.10_1 (active)
  gawk @3.1.5_2 (active)
  gcc34 @3.4.6_1+darwin_8 (active)
  gcc40 @4.0.4_0+darwin_8 (active)
  gcc41 @4.1.2_1+darwin_8 (active)
  gd2 @2.0.33_2 (active)
  gettext @0.16.1_0 (active)
  ghc @6.6_3+darwin_8_powerpc (active)
  ghostscript @8.54_0 (active)
  glib1 @1.2.10_5 (active)
  glib2 @2.12.9_0 (active)
  glpk @4.15_0 (active)
  gmake @3.81_0 (active)
  gmp @4.2.1_4+test (active)
  gnuplot @4.0.0_3+darwin_8 (active)
  gsed @4.1.5_0 (active)
  gtk1 @1.2.10_6 (active)
  gtk2 @2.10.9_0 (active)
  hdf5 @1.6.5_0 (active)
  hugs98 @plus-Sep2006_0 (active)
  ImageMagick @6.3.2-9_0+darwin_8 (active)
  imlib @1.9.15_0 (active)
  ispell @3.3.02_0 (active)
  jasper @1.701.0_0 (active)
  jpeg @6b_1 (active)
  libiconv @1.11_4+darwin_8 (active)
  libpcap @0.9.5_0 (active)
  libpixman @0.1.6_0 (active)
  libpng @1.2.16_0+darwin_8 (active)
  libsdl @1.2.11_0+darwin_8 (active)
  libtool @1.5.22_0 (active)
  libungif @4.1.4_0 (active)
  libxml @1.8.17_0 (active)
  libxml2 @2.6.27_0 (active)
  metis @4.0_0+darwin_8 (active)
  mpfr @2.2.1_0+darwin_8
  mpfr @2.2.1_1+darwin_8 (active)
  ncurses @5.6_1+darwin_8 (active)
  ncursesw @5.6_0+darwin_8 (active)
  neon @0.26.3_0 (active)
  netpbm @10.26.30_0+darwin_8 (active)
  nmap @4.20_0 (active)
  ocaml @3.09.3_1 (active)
  octave @2.9.9_4+test (active)
  odcctools @20060413_0 (active)
  openssl @0.9.8e_0+darwin_8 (active)
  pango @1.14.10_0 (active)
  pari @2.3.1_1 (active)
  pcre @7.0_0 (active)
  pdflib @7.0.0_0+darwin_8 (active)
  pdftk @1.41_0 (active)
  perl5.8 @5.8.8_0+darwin_8 (active)
  pkgconfig @0.21_0 (active)
  py-numpy @1.0.1_0 (active)
  py-pil @1.1.5_1 (active)
  py-pyx @0.9_0 (active)
  py-readline @2.4.3_0 (active)
  py-scipy @0.5.2_0 (active)
  py25-readline @2.5_0 (active)
  python24 @2.4.3_1+darwin_8 (active)
  python25 @2.5_1+darwin_8 (active)
  readline @5.1.004_0 (active)
  render @0.9_0 (active)
  ruby @1.8.5_2 (active)
  splint @3.1.1_0 (active)
  sqlite3 @3.3.13_0+darwin_8 (active)
  subversion @1.4.3_0 (active)
  SuiteSparse @2.4.0_0 (active)
  tcl @8.4.14_0 (active)
  teTeX @3.0_3 (active)
  texi2html @1.76_3 (active)
  texinfo @4.8_2 (active)
  tiff @3.8.2_0+darwin_8 (active)
  tk @8.4.14_0 (active)
  Xft2 @2.1.7_0 (active)
  xrender @0.9.0_0+darwin_8 (active)
  zlib @1.2.3_0 (active)