beets-full @1.6.0: Failed to mirror beets-full: The requested URL returned error: 404 Not Found

[ryandesign (Ryan Carsten Schmidt)]

​https://build.macports.org/builders/jobs-mirror/builds/492168/steps/mirror/logs/stdio

--->  Fetching distfiles for beets-full
--->  beets-full-1.6.0.tar.gz does not exist in /Volumes/RAID/opt/local/var/rsync/macports/distfiles/beets
--->  Attempting to fetch beets-full-1.6.0.tar.gz from http://distfiles.macports.org/beets
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0--->  Attempting to fetch beets-full-1.6.0.tar.gz from https://files.pythonhosted.org/packages/source/b/beets-full
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0--->  Attempting to fetch beets-full-1.6.0.tar.gz from http://mirror.fcix.net/macports/distfiles/beets
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0Error: Failed to mirror beets-full: The requested URL returned error: 404 Not Found
Error: See /opt/local/var/buildmaster/build/prefix/var/macports/logs/_opt_local_var_buildworker_jobs_jobs-mirror_build_ports_audio_beets/beets-full/main.log for details.

The problem is that the port disables the fetch, extract, and checksum phases:

    fetch           {}
    extract         {}
    checksum        {}

Instead, the port should clear the distfiles variable:

    distfiles

[catap (Kirill A. Korinsky)]

In 368de35a6115367a263fc7986fe577675100a032/macports-ports (master):

beets-full: fix mirroring

Closes: #66373