Library version choosing of cabal sandbox build

[Daniel Trstenjak]

Hi Roman,

> You should create a fresh sandbox per build, then.
> 
> This is both sufficient (nothing is installed => no reason to prefer an older
> version) and necessary (when in a sandbox, cabal won't let you have two
> different versions of the library installed).

As long as you haven't installed the library locally (in ~/.cabal) then
it's sufficient, otherwise it isn't.


Greetings,
Daniel