Since GHC 7.10 or 7.8, the Haskell packages are installed in directories
whose name contains the package hash. This made it harder to predict the
exact pathname. Havin the exact pathnames in the PLIST file is the
ideal, it also helps to record the general structure of the installed
files to see whether some file unexpectedly appear or disappear.
To enable this for Haskell packages, the various base directories are
replaced with placeholders during print-PLIST. These placeholders are
translated back to their respective paths when the +PLIST is generated
from the PLIST in the package directory.
Except for 2 packages, all Haskell packages in main pkgsrc had their
package PLIST file removed. To help in adding them back, the pkgsrc
developer can set HS_UPDATE_PLIST=yes in mk.conf, which will generate the
PLIST directly into ${PKGDIR}/PLIST upon installation.
Most packages in pkgsrc-wip still have their old PLIST, and these are
migrated automatically as well.
Used to form _HASKELL_PKG_DESCR_DIR. Defaults to DISTNAME, but for
some packages (hledger, incoming), the same DISTNAME is shared by
multiple packages. So let the package define it explicitly if need
be.
Starting from somewhere around GHC 7.8, Cabal installs packages with a
hashed package key instead of just "{NAME}-{VERSION}". In other words,
the pair of the plain package name and the version is no longer unique
in the package DB, and using it for uninstallation may also remove
packages that we didn't mean to remove.
This is paricularly problematic because GHC comes with several bundled
Cabal packages. Installing and uninstalling a package with the same
name could break GHC itself, if the uninstallation is performed
without hashed keys.
* HASKELL_ENABLE_LIBRARY_PROFILING and HASKELL_ENABLE_HADDOCK_DOCUMENTATION
are "User-settable variables", not "Package-settable variables".
* Change to HASKELL_ENABLE_HADDOCK_DOCUMENTATION=yes by default.
* Add HASKELL_ENABLE_SHARED_LIBRARY("yes" by default), to enable shlib support.
* Add support for dynamically conditional PLIST entries handling for
HASKELL_ENABLE_SHARED_LIBRARY and HASKELL_ENABLE_LIBRARY_PROFILING.
discussed with pho@ and szptvlfn@.
