[lp-set-dup] "You can't mark a bug as a duplicate of itself."

[Rolf Leggewie]

Binary package hint: devscripts

I am running an up-to-date lucid system. I had originally set bug 341688 as a dupe to bug 360893, but then wanted to reverse that relation. I don't really understand why the script is trying at the end to set 360893 as a dupe to itself.

$ tsocks lp-set-dup 360893 341688
Setting up Launchpad
Launchpad setup complete
Processing 341688
Found 3 dups for 341688
Would set the following bugs as duplicates of 360893: 342275 351500 352447 341688
Proceed? [y/N]y
Marking bug 342275 as a duplicate of 360893
Marking bug 351500 as a duplicate of 360893
Marking bug 352447 as a duplicate of 360893
Marking bug 341688 as a duplicate of 360893
$ tsocks lp-set-dup 341688 360893
Setting up Launchpad
Launchpad setup complete
Bug 341688 is a duplicate of 360893; would you like to use 360893 as the new main bug instead? [y/N]y
Processing 360893
Found 4 dups for 360893
Would set the following bugs as duplicates of 360893: 341688 342275 351500 352447 360893
Proceed? [y/N]y
Marking bug 341688 as a duplicate of 360893
Marking bug 342275 as a duplicate of 360893
Marking bug 351500 as a duplicate of 360893
Marking bug 352447 as a duplicate of 360893
Marking bug 360893 as a duplicate of 360893
Traceback (most recent call last):
  File "/usr/bin/lp-set-dup", line 114, in <module>
    bug.lp_save()
  File "/usr/lib/pymodules/python2.6/lazr/restfulclient/resource.py", line 683, in lp_save
    URI(self.self_link), representation, headers)
  File "/usr/lib/pymodules/python2.6/lazr/restfulclient/_browser.py", line 366, in patch
    'PATCH', extra_headers=extra_headers)
  File "/usr/lib/pymodules/python2.6/lazr/restfulclient/_browser.py", line 306, in _request
    raise HTTPError(response, content)
lazr.restfulclient.errors.HTTPError: HTTP Error 417: Expectation Failed
Response headers:
---
content-length: 47
content-type: text/plain
date: Mon, 13 Sep 2010 03:23:49 GMT
server: zope.server.http (HTTP)
status: 417
vary: Accept-Encoding
via: 1.1 wildcard.edge.launchpad.net
x-powered-by: Zope (www.zope.org), Python (www.python.org)
---
Response body:
---

You can't mark a bug as a duplicate of itself.
---

[Benjamin Drung (bdrung)]

lp-set-dup is part of ubuntu-dev-tools, but not devscripts.

[Benjamin Drung (bdrung)]

lp-set-dup moved from ubuntu-dev-tools into lptools.

[Jelmer Vernooij (jelmer)]

I suspect the issue is that the bug you're trying to mark 360893 as a dupe of is itself a dupe of 360893.

lp-set-up should be printing a saner error message, warning you beforehand or allowing you to break that cycle by unmarking 360893 as a dupe first.