[MacPorts] #49605: mpd will not install if /opt/local/var/lib/mpd/music is a symlink to my music

[MacPorts]

#49605: mpd will not install if /opt/local/var/lib/mpd/music is a symlink to my
music
--------------------------+--------------------------------
 Reporter:  bnilsson11@…  |      Owner:  macports-tickets@…
     Type:  enhancement   |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.3.4
 Keywords:                |       Port:  mpd
--------------------------+--------------------------------
 After a successful installation of mpd, the easiest way to introduce the
 music library is replace /opt/local/var/lib/mpd/music with a symlink to
 your existing music library:

  user $ cd /opt/local/var/lib/mpd [[br]]
  user $ ls -la [[br]]
  total 816 [[br]]
  drwxrwxrwx  8 root      admin     272 26 Sep 17:39 . [[br]]
  drwxr-xr-x  5 root      admin     170  6 Nov 02:33 .. [[br]]
  -rw-r--r--@ 1 user  admin    6148 22 Feb  2015 .DS_Store [[br]]
  -rwxrwxrwx  1 user  admin  397023 16 Okt 22:43 database [[br]]
  drwxr-xr-x  4 user  admin     136 22 Feb  2015 hide [[br]]
  lrwxr-xr-x  1 user  admin      19 26 Sep 17:38 music ->
 /Volumes/htpc/Musik [[br]]
  lrwxr-xr-x  1 user  admin      29 26 Sep 17:39 playlists ->
 /Volumes/htpc/Musik/Playlists [[br]]
  -rw-r--r--  1 avahi     admin     581 16 Feb  2015 state [[br]]

 If mpd is upgraded or re-installed, the installation fails because "music"
 and "playlists" symlinks cannot be overwritten.
 I need to manually remove the symlinks and try again.
 After installation I need to replace music and playlists with symlinks
 again.

 Life would be much easier if the installation/upgrade procedure would be
 more tolerant and check the status of these directories, and don't
 overwrite if they exist or if they are not writeable.
 The install/upgrade would then be more straight forward and transparent.

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Ticket URL: <https://trac.macports.org/ticket/49605>
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