[Bug 1771044] [NEW] sysconfig-debian-schemes.diff patch causes Python packages to FTBFS

[Jeremy Bicha]

Public bug reported:

This weekend, we noticed that link-grammar fails to build from source
because of a change in python3.6. I've now found a second case with
redshift.

These packages still build in Debian unstable. Therefore, it looks like
the sysconfig-debian-schemes patch is to blame.

The "fix" for link-grammar looks wrong. It does not feel like it would
be an improvement to update all affected packages like this.

It's interesting that autopkgtest did its job here by link-grammar
failing its tests but the failure was basically quickly ignored.

References
==========
https://launchpad.net/ubuntu/+source/python3.6/3.6.5-9ubuntu1

https://autopkgtest.ubuntu.com/packages/l/link-grammar/cosmic/amd64
https://launchpad.net/ubuntu/+source/link-grammar/5.5.0-1ubuntu1

https://launchpad.net/ubuntu/+source/redshift/1.11-2ubuntu1/+build/14876053

https://irclogs.ubuntu.com/2018/05/12/%23ubuntu-devel.html

** Affects: python3.6 (Ubuntu)
     Importance: Critical
         Status: New


** Tags: cosmic ftbfs

** Description changed:

  This weekend, we noticed that link-grammar fails to build from source
  because of a change in python3.6. I've now found a second case with
  redshift.
  
  These packages still build in Debian unstable. Therefore, it looks like
  the sysconfig-debian-schemes patch is to blame.
  
  The "fix" for link-grammar looks wrong. It does not feel like it would
  be an improvement to update all affected packages like this.
  
  It's interesting that autopkgtest did its job here by link-grammar
  failing its tests but the failure was basically quickly ignored.
  
  References
  ==========
  https://launchpad.net/ubuntu/+source/python3.6/3.6.5-9ubuntu1
  
  https://autopkgtest.ubuntu.com/packages/l/link-grammar/cosmic/amd64
  https://launchpad.net/ubuntu/+source/link-grammar/5.5.0-1ubuntu1
  
  https://launchpad.net/ubuntu/+source/redshift/1.11-2ubuntu1/+build/14876053
+ 
+ https://irclogs.ubuntu.com/2018/05/12/%23ubuntu-devel.html

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https://bugs.launchpad.net/bugs/1771044

Title:
  sysconfig-debian-schemes.diff patch causes Python packages to FTBFS

Status in python3.6 package in Ubuntu:
  New

Bug description:
  This weekend, we noticed that link-grammar fails to build from source
  because of a change in python3.6. I've now found a second case with
  redshift.

  These packages still build in Debian unstable. Therefore, it looks
  like the sysconfig-debian-schemes patch is to blame.

  The "fix" for link-grammar looks wrong. It does not feel like it would
  be an improvement to update all affected packages like this.

  It's interesting that autopkgtest did its job here by link-grammar
  failing its tests but the failure was basically quickly ignored.

  References
  ==========
  https://launchpad.net/ubuntu/+source/python3.6/3.6.5-9ubuntu1

  https://autopkgtest.ubuntu.com/packages/l/link-grammar/cosmic/amd64
  https://launchpad.net/ubuntu/+source/link-grammar/5.5.0-1ubuntu1

  https://launchpad.net/ubuntu/+source/redshift/1.11-2ubuntu1/+build/14876053

  https://irclogs.ubuntu.com/2018/05/12/%23ubuntu-devel.html

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