[Bug 1494468] Re: wily cloud images too fat

[Piotr Ożarowski]

libdpkg-perl is already a dependency of debhelper, so I didn't have any
objections in adding it to dh-python (which extends debhelper).

The problem is python3 package depends on dh-python - that's because
dh_python3 script was provided by python3 package in the past and not
all source packages that build python3-foo binary packages already
build-depend on dh-python.

You don't need dh-python if you don't want to build any package (and I
suspect cloud images don't).

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https://bugs.launchpad.net/bugs/1494468

Title:
  wily cloud images too fat

Status in libfile-fcntllock-perl package in Ubuntu:
  Fix Released

Bug description:
  something recently made cloud images get super fat.
  I first noticed this on 2015-09-04.

  Odd_bloke took an initial look and found :

  09/04/15 14:30:00 <Odd_Bloke> smoser: Looks like libdpkg-perl recommends libfile-fcntllock-perl which recommends a compiler.
  09/04/15 14:30:13 <Odd_Bloke> So we're pulling in gcc
  09/04/15 14:30:22 <Odd_Bloke> That seems a little unnecessary. :p
  09/04/15 14:30:43 <smoser> why libdpkg-perl ?
  09/04/15 14:30:51 <smoser> is that a new recommends
  09/04/15 14:31:00 <Odd_Bloke> dh-python Depends libdpkg-perl
  09/04/15 14:32:47 <Odd_Bloke>     - fix parsing Build-Depends with comments (closes: 793609, thanks to James
  09/04/15 14:32:50 <Odd_Bloke>       McCoy for the patch) - new build/runtime dependency: libdpkg-perl
  09/04/15 14:32:55 <Odd_Bloke> That's in dh-python's changelog.

  Not sure why dh-python is in either though.

  The beta-1 images (http://cloud-images.ubuntu.com/releases/15.10/beta-1/) for amd64 is 276M (disk1.img).
  The current dailiy (20150907) http://cloud-images.ubuntu.com/daily/server/wily/20150907/ is 392M.

  So somewhere between 20150825 and 20150904 we grew by a lot.

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