[Bug 1867157] [NEW] Improve command-not-found package headers

[Dimitri John Ledkov]

Public bug reported:

Improve command-not-found package headers


command-not-found uses package metadata, and to improve the UX of the misspelled commands / proposed packages.

python2.7-minimal should gain XB-Cnf-Visible-Pkgname: python2.7

python3.8-minimal should gain XB-Cnf-Visible-Pkgname: python3.8

python2-minimal should gain XB-Cnf-Visible-Pkgname: python2

python3-minimal should gain XB-Cnf-Visible-Pkgname: python3

This will then improve these messages from:

"""
  command 'python2.7' from deb python2.7-minimal (2.7.17-1)
  command 'python3.8' from deb python3.8-minimal (3.8.0-5)
  command 'python2' from deb python2-minimal (2.7.17-2)
  command 'python3' from deb python3-minimal (3.7.5-1ubuntu1)
"""

To

"""
  command 'python2.7' from deb python2.7 (2.7.17-1)
  command 'python3.8' from deb python3.8 (3.8.0-5)
  command 'python2' from deb python2 (2.7.17-2)
  command 'python3' from deb python3 (3.7.5-1ubuntu1)
"""


python3 should drop
XB-Cnf-Extra-Commands: python
XB-Cnf-Priority-Bonus: 5

Such that it stops suggesting that somehow python is available from
python3 package, which is a lie.

There is a special case for "python" command hint in command-not-found
already, which simply points people to "python3".

** Affects: python-defaults (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: python2.7 (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: python3-defaults (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: python3.8 (Ubuntu)
     Importance: Undecided
         Status: New

** Also affects: python3-defaults (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: python2.7 (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: python3.8 (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1867157

Title:
  Improve command-not-found package headers

Status in python-defaults package in Ubuntu:
  New
Status in python2.7 package in Ubuntu:
  New
Status in python3-defaults package in Ubuntu:
  New
Status in python3.8 package in Ubuntu:
  New

Bug description:
  Improve command-not-found package headers

  
  command-not-found uses package metadata, and to improve the UX of the misspelled commands / proposed packages.

  python2.7-minimal should gain XB-Cnf-Visible-Pkgname: python2.7

  python3.8-minimal should gain XB-Cnf-Visible-Pkgname: python3.8

  python2-minimal should gain XB-Cnf-Visible-Pkgname: python2

  python3-minimal should gain XB-Cnf-Visible-Pkgname: python3

  This will then improve these messages from:

  """
    command 'python2.7' from deb python2.7-minimal (2.7.17-1)
    command 'python3.8' from deb python3.8-minimal (3.8.0-5)
    command 'python2' from deb python2-minimal (2.7.17-2)
    command 'python3' from deb python3-minimal (3.7.5-1ubuntu1)
  """

  To

  """
    command 'python2.7' from deb python2.7 (2.7.17-1)
    command 'python3.8' from deb python3.8 (3.8.0-5)
    command 'python2' from deb python2 (2.7.17-2)
    command 'python3' from deb python3 (3.7.5-1ubuntu1)
  """

  
  python3 should drop
  XB-Cnf-Extra-Commands: python
  XB-Cnf-Priority-Bonus: 5

  Such that it stops suggesting that somehow python is available from
  python3 package, which is a lie.

  There is a special case for "python" command hint in command-not-found
  already, which simply points people to "python3".

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