[Bug 1818778] Please test proposed package

[Łukasz Zemczak]

Hello Trent, or anyone else affected,

Accepted python3.8 into disco-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/python3.8/3.8.0-3~19.04 in a few
hours, and then in the -proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-disco to verification-done-disco. If it does not fix
the bug for you, please add a comment stating that, and change the tag
to verification-failed-disco. In either case, without details of your
testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

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https://bugs.launchpad.net/bugs/1818778

Title:
  Python should be compiled with USDT/dtrace user-space probes

Status in python3.7 package in Ubuntu:
  Confirmed
Status in python3.8 package in Ubuntu:
  Fix Released
Status in python3.8 source package in Disco:
  Fix Committed

Bug description:
  Python3.6 and later support being compiled with USDT/dtrace user-space
  probes, this allows tools such as perf and BPF utilities (bpfcc-tools)
  to do runtime profiling and tracing of Python execution.

  Ubuntu should compile Python with this support to enable better
  debugging of Python applications in production. perf/bpf tools can be
  attached to running production processes without having to restart
  them under a debugger which may destroy the situation you are trying
  to observe. This would be particularly useful with OpenStack
  deployments for example.

  The current python3.6/python3.7/python3.8 packages do not build with
  this support, because it requires a build-dependency on systemtap-sdt-
  dev and the option --with-dtrace to be passed at compile time.

  systemtap-sdt-dev is not currently in main, however, it was previously
  approved for a MIR in Bug #1203590 - it seems the original packages
  this was required for (Source Package: ust) was demoted to universe at
  some point and the systemtap-sdt-dev dependency went with it. So I am
  hopeful it will be re-approved for main inclusion and allow this to be
  done

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