On Sat, Mar 2, 2013 at 4:17 PM, Frank Siebenlist
<frank.siebenl...@gmail.com> wrote:
>> ...
>> The chain causing problems for you is:
>>
>> [clj-ns-browser "1.3.0"] -> [seesaw "1.4.2"] -> [j18n "1.0.1"] ->
>> [org.clojure/clojure "[1.2,1.5)"]
>>
>> The last one there allows clojure below 1.5, which includes -RC17.  As
>> soon as you bump to to 1.5 it ignores the "soft" version in your
>> :dependencies, and chooses one in the range based on your other
>> dependencies.
>>
>> You should just need the :exclusion in clj-ns-browser.
>>
>> -
>> Nelson Morris
>
> As i'm responsible for the clj-ns-browser release...
> And although the dependency issue seems another 2 levels down, can i specify 
> anything differently in my project file to prevent this?

You could add the a similar exclusion for org.clojure/clojure in the
seesaw dependency declaration, but I'd just wait for the next seesaw
release which will handle it.

>
> Or is this a bug in leiningen's dependency resolution?
>

Unfortunately it's behaviour defined by maven.  In order to be
compatible lein has to do the same thing.

I've written up a few things about version ranges at
http://nelsonmorris.net/2012/07/31/do-not-use-version-ranges-in-project-clj.html
and in some other mailing list threads.  The confusion about what can
happen with dependencies led me to make
https://github.com/xeqi/lein-pedantic, which is helpful for some
cases.  In addition, I hope to get some easier debugging for this case
into lein itself; issues at:
https://github.com/technomancy/leiningen/issues/734 and
https://github.com/cemerick/pomegranate/issues/54

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