Provided by: haskell-devscripts_0.10.2.3_all 

NAME
dh_haskell_provides - calculates Haskell virtual package names on Cabalized libraries
SYNOPSIS
dh_haskell_provides [debhelper options] [-Xpackage] [--exclude=package] [file ...]
DESCRIPTION
dh_haskell_provides is a debhelper program that calculates the correct virtual package to provide, so
that dependencies can guarantee ABI stability.
For a package with an idea of package-version-longhashstring, it generates a virtual package of the form
libghc-package-dev-version-longh for the -dev package and libghc-package-prof-version-longh for the prof
package respectively.
This script writes the debian/$package.substvars file, including in it the haskell:Provides. So, to use
this package, include in the Provides: field in debian/control ${haskell:Provides}.
SEE ALSO
dh_haskell_depends(1) dh_haskell_shlibdeps(1) debhelper(7)
AUTHOR
Joachim Breitner <nomeata@debian.org>
Based on ideas in dh_ocaml.
Haskell devscripts 0.10.2.3 2015-12-22 DH_HASKELL_PROVIDES(1)