Log message:
*: Bump PKGREVISION for ghc-9.0.1

Log message:
Update to hxt-9.3.1.22

Changes from 9.3.1.21: ghc-9.0 compatibility

Changes from 9.3.1.20: ghc 8.10 and 9.0 compatibility, tuple picker up
to 24-tuples, Either instance for xpickle

Changes from 9.3.1.19: ghc-8.8.2 compatibility

Log message:
hs-*: add PLIST files

These PLIST files have been autogenerated by mk/haskell.mk using
HS_UPDATE_PLIST=yes during a bulk build.  They will help to track changes
to the packages.  The Haskell packages didn't have PLIST files because
their paths contained package hashes.  These hashes are now determined by
mk/haskell.mk, which makes it easy to generate easy to read PLIST files.

Log message:
Import hxt-9.3.1.18 from wip

The Haskell XML Toolbox bases on the ideas of HaXml and HXML, but
introduces a more general approach for processing XML with
Haskell. The Haskell XML Toolbox uses a generic data model for
representing XML documents, including the DTD subset and the document
subset, in Haskell. It contains a validating XML parser, a HTML
parser, namespace support, an XPath expression evaluator, an XSLT
library, a RelaxNG schema validator and funtions for serialization and
deserialization of user defined data. The library makes extensive use
of the arrow approach for processing XML.

Since version 9 the toolbox is partitioned into various
(sub-)packages. This package contains the core functionality,
hxt-curl, hxt-tagsoup, hxt-relaxng, hxt-xpath, hxt-xslt,
hxt-regex-xmlschema contain the extensions. hxt-unicode contains
encoding and decoding functions, hxt-charproperties char properties
for unicode and XML.