The other two work arounds are 1. Explicit import lists for the stuff you need. 2. Explicit export list for your module (which you do), and internally use non-overloaded identifiers. module AnnoyinglyLongModuleName ( AnnoyinglyLongModuleName.length , AnnoyinglyLongModuleName.null ) where length = length' null = null' length' :: a -> Int length' _ = 0 null' :: a -> Bool null' = (== 0) . length' On 29.09.2014 10:48, Herbert Valerio Riedel wrote:
On 2014-09-29 at 10:43:28 +0200, Andreas Abel wrote:
Indeed, being able to introduce a short name for the current module, or having a fixed short name like 'This' or 'Self' would be neat.
The standard workaround for your example would be
import Prelude hiding (length,null)
That won't work though, because what I failed to mention is that I needed this (while avoiding CPP) to cope with external modules growing their exports lists, such as Data.Foldable starting to export 'length' and 'null' in base-4.8.0.0
Moreover, hiding a non-existent symbol is a warning in recent GHC's but a hard error in older GHCs, so that's not an option either if you want to avoid CPP, support GHCs back to 7.0, and be -Werror-clean.
More generally, 'hiding'-imports aren't robust in terms of forward-compatibility.
Did you try a .hs-boot file with your self-import trick?
Not yet
-- Andreas Abel <>< Du bist der geliebte Mensch. Department of Computer Science and Engineering Chalmers and Gothenburg University, Sweden andreas.abel@gu.se http://www2.tcs.ifi.lmu.de/~abel/