python analyze.py ~/sources.json
There are 17599 sources in nixpkgs

Sources are coming from 1529 different hosts

Sources grouped by host:
  5707 hackage.haskell.org
  2432 files.pythonhosted.org
  1449 cpan.metacpan.org
  1341 rubygems.org
   851 downloads.sourceforge.net
   648 github.com
   441 repo1.maven.org
   354 ftpmirror.gnu.org
   295 download.gnome.org
   272 download.kde.org
   201 xorg.freedesktop.org
   161 beta.quicklisp.org
    85 download.qt.io
    68 raw.githubusercontent.com
    68 mran.revolutionanalytics.com
    65 launchpad.net
    62 bitbucket.org
    61 www-eu.apache.org
    53 archive.xfce.org
    46 httpredir.debian.org
    46 www.nuget.org
    43 mirror.easyname.at
    42 salsa.debian.org
    40 luarocks.org
    38 pub.mate-desktop.org
    34 cdn.kernel.org
    33 registry.npmjs.org
    32 storage.googleapis.com
    27 releases.llvm.org
    23 smlnj.cs.uchicago.edu
    21 www.freedesktop.org
    20 gstreamer.freedesktop.org
    19 erratique.ch
    18 src.fedoraproject.org
    16 www.samba.org
    16 download.netsurf-browser.org
    16 pecl.php.net
    15 gnupg.org
    15 www.theleagueofmoveabletype.com
    14 downloads.xiph.org
  2411 others

By schemes:
 https 9495
  http 8012
   ftp 92

By types:
  github_archive 266
         unknonw 9891
  github_release 335
       bitbucket 59
         hackage 5707
        rubygems 1341

By file types:
         archive 15191
             jar 230
         unknown 315
               c 23
             deb 29
           patch 94
             gem 1338
             rpm 4
            diff 14
             iso 3
            rock 54
             png 4
             whl 10
             ttf 17
             pom 270
             msi 3