bz2 or gz for pkg_summary?

["Jeremy C. Reed" <reed%reedmedia.net@localhost>]

Looks like pkg_chk.sh uses pkg_summary.gz and pkgin used to support only 
bz2. Now I see pkgin also supports both with bz2 first. My own pkg_get 
script uses the .gz file.  I cc developers of those who provide code 
that uses the pkg_summary.

I saw:

-rw-rw-r--  1 rhaen     netbsd  610299 Oct 17 19:01 
/ftp/pub/pkgsrc/packages/SunOS/sparc/5.9_current/All/pkg_summary.bz2
-rw-rw-r--  1 pkgmastr  netbsd  823049 Mar  1 11:12 
/ftp/pub/pkgsrc/packages/SunOS/sparc/5.9_current/All/pkg_summary.gz

-rw-rw-r--  1 pkgmastr  netbsd  1469300 Mar  9 21:40 
/ftp/pub/pkgsrc/packages/NetBSD/amd64/5.0/All/pkg_summary.bz2
-rw-rw-r--  1 pkgmastr  netbsd  2068185 Mar 12 05:38 
/ftp/pub/pkgsrc/packages/NetBSD/amd64/5.0/All/pkg_summary.gz

MD5 (/ftp/pub/pkgsrc/packages/NetBSD/amd64/5.0/All/pkg_summary.bz2) = 
2754e680710e6df6f3a2993a32b06cee
MD5 (/ftp/pub/pkgsrc/packages/NetBSD/amd64/5.0/All/pkg_summary.gz) = 
c2726abdf57d0661fed4478c0db82b08

What's going on here?

Why different time stamps on these files? Why different content?

We need to decide to pick one.

Or we must decide to force them to have same correct content.

How are these pkg_summary files put in place? Manually when packages are 
uploaded?

It was proposed (and code provided) to generate them automatically.