[Bug 1071025] Re: do-release-upgrade allows both -d and -p switches although neither takes effect

[Brian Murray]

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Triaged => In Progress

** Changed in: ubuntu-release-upgrader (Ubuntu)
     Assignee: (unassigned) => Brian Murray (brian-murray)

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https://bugs.launchpad.net/bugs/1071025

Title:
  do-release-upgrade allows both -d and -p switches although neither
  takes effect

Status in “ubuntu-release-upgrader” package in Ubuntu:
  In Progress

Bug description:
  13:59:33 - flash:[/tmp] do-release-upgrade -h
  Usage: do-release-upgrade [options]

  Options:
    -h, --help            show this help message and exit
    -V, --version         Show version and exit
    -d, --devel-release   Check if upgrading to the latest devel release is
                          possible
    --data-dir=DATA_DIR   Directory that contains the data files
    -p, --proposed        Try upgrading to the latest release using the upgrader
                          from $distro-proposed

  There is no documentation nor an error message if you use both the -d
  and -p switches.  However, if you look at MetaRelease.py you will see
  the following:

          # devel and proposed "just" change the postfix
          if useDevelopmentRelease:
              self.METARELEASE_URI += self.METARELEASE_URI_UNSTABLE_POSTFIX
          elif useProposed:
              self.METARELEASE_URI += self.METARELEASE_URI_PROPOSED_POSTFIX

  by using both -d and -p you get neither.  As there is no meta-release
  file for meta-release-development-proposed there should be an error
  message if you use both arguments at the same time.

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