[Cupt-devel] Bug#680010: wanted: debdelta-only-upgrade option.

[A. Costa]

Package: cupt
Version: 2.5.7
Severity: wishlist

Dear Maintainer,

On my Debian 'unstable', with a 5K/sec modem for internet,
sometimes an upgrade/update cycle lists many big files with 
no currently available debdeltas, which means 400M or so to 
download, a 23 hour upgrade (ideal case).

It would be useful if users with low bandwidth could 
run an update/upgrade cycle that offered available 
debdeltas only.  The CLI interface might look like:

    # update deltas
    cupt debdelta-update
    ...
    
    # upgrade with only deltas
    cupt debdelta-only-upgrade
    ...

Benefits include: In some cases it would make systems safer 
faster, as would be the case when a needed upgrade has deltas 
available, which would otherwise wait behind a 23 hour queue.
(i.e. a 23 hour window of vulnerability.)  It needn't slow anything 
down, since the user could always run 'debdelta-only-upgrade' first, 
then opt for a standard upgrade.  Also saves user time, electricity,
phone bandwidth, and server bandwidth.  


I'm not sure if the debdelta infrastructure as of 7/2012 provides an 
easy way to do this.  If not, something extra would need to be 
added to debdelta to make it work.

HTH...


-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 3.2.0-3-686-pae (SMP w/2 CPU cores)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) (ignored: LC_ALL set to C)
Shell: /bin/sh linked to /bin/dash

Versions of packages cupt depends on:
ii  libboost-program-options1.49.0  1.49.0-3.1
ii  libc6                           2.13-34
ii  libcupt2-0                      2.5.7
ii  libgcc1                         1:4.7.1-2
ii  libstdc++6                      4.7.1-2

cupt recommends no packages.

Versions of packages cupt suggests:
ii  libreadline6    6.2-8
ii  sensible-utils  0.0.7

-- no debconf information