On 3 October 2011 22:30, Joachim Breitner
Hi,
Am Montag, den 03.10.2011, 13:27 +0200 schrieb Herbert Valerio Riedel:
On Mon, 2011-10-03 at 13:18 +0200, Joachim Breitner wrote:
I’d like to propose that the package (shown by "ghc-pkg field <pkg> id" and used by "ghc-pkg field <pkg> depends") should only consist of the first three components of the package version, not all of them.
...would this affect the ability to declare version constraints that use more than the first 3 components? E.g. would the following Cabal statement
Build-depends: aeson >=0.3.2.12 && <0.4
still work (and force at least version 0.3.2.12 of aeson to be used)?
yes, all other version-related machinery (dependencies in Cabal packages, hackage stuff etc) still work.
I am only talking about the packages as registered with ghc-pkg, not the packages as specified by .cabal. In distribution-lingo, the former are binary packages and the latter are source packages.
Would this not make it harder to determine which exact version of a package you have installed? I believe cabal-install uses ghc-pkg to know which versions are installed, so how would it know whether you have the latest bug-fix release installed? -- Ivan Lazar Miljenovic Ivan.Miljenovic@gmail.com IvanMiljenovic.wordpress.com