Such requirement (dependency on executable) can't be covered by the

cabal file (at least with 'simple' build type). It's possible to write custom

setup.hs or use autotools to check such types of dependency.
AFAIK there were other examples of dependencies, that can't be covered
by existing approaches, but I can't show them from the scratch.

--
Alexander

On 19 March 2014 21:24, Peter Simons <simons@cryp.to> wrote:

Hi Alexander,

> Some packages require existing executables, e.g. git-annex require
> lsof. There were some more examples of packages that doesn't have
> pkg-config but require additional programs to be installed.

if the package requires system resources that the Cabal file doesn't
declare, then this is a bug in the Cabal file, no?

Take care,
Peter

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--
Alexander