On Thu, 30 Sep 2010, Bas van Dijk wrote:

On Thu, Sep 30, 2010 at 5:15 PM, Christopher Done
<chrisd...@googlemail.com> wrote:
... One thing that makes figuring out a code base hard is when the
code doesn't have explicit imports. Sometimes I can load the code in
GHCi and inspect the symbols manually, sometimes I can't. If the
import list explicitly said where stuff came from I wouldn't have to
deal with this.

Indeed. I strictly use this style in all my projects. See the
following for example:

http://hackage.haskell.org/packages/archive/usb/0.6.0.1/doc/html/src/System-USB-Internal.html

I see it as a service to my readers. In order to find out where a
symbol is coming from they only need to scroll up and look it up in
the import list. Note that for further convenience I group the imports
by package so they don't need to figure out which package exports what
module.

It is also necessary when you want x.y.* style version dependencies on packages that follow the package versioning policy.

http://www.haskell.org/haskellwiki/Import_modules_properly
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