Am I able to install a lens or a scope in 13.04 that I had used before in 12.04? Are the lenses and scopes build earlier (What lenses are available for Unity?) able "to just work" on 13.04?

Looking forward to Recoll Lens & News Lens again if this is the case that what has worked will work just the same on 13.04.

Thank you for your time and answers.

1 Answer 1


Quoting from the Ubuntu Meeting Log:

67 [17:27] pawel_st asked: ​ is lens/scopes api stable/going to be stabilized with 12.04; will backwards compatibility be maintained from now, or is it still a moving target?

68 [17:28] the lens API had to be changed between Oneiric (11.10) and Precise (12.04), because the original way of doing thing wasn't going to be efficient enough

69 [17:28] but the new API should be all but set in stone
70 [17:28] the changes to the API, by the way, were not very drastic

The API should be pretty much set in stone now, so lenses that worked with 12.04 (after the 11.10 API rewrite) should be still compatible with 13.04.

  • That information is a bit out of date. There will be changes to the scope API between 13.04 and 13.10, for instance. I haven't looked at what the changes were between 12.04 and 13.04 though. Commented May 3, 2013 at 19:33
  • I tried to install lenses but they did not work.
    – Dustin
    Commented May 16, 2013 at 16:59

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