Mega-repo for my public Haskell projects.

Data structures & related utilities

• q4c12-compose-key is a nifty little isomorphism, Iso' (Map a (NonEmptyMap b c)) (Map (a, b) c).

• q4c12-foldable-utils are some utility functions I can't live without.

• q4c12-hlist has heterogeneous lists and sums.

• q4c12-position is a type to represent points or contiguous ranges in text.

• q4c12-twofinger is an efficient alternating sequence type.

Cabal stuff

• q4c12-aeson-cabal is my locally canonical place for orphan instances of classes from aeson for types from Cabal.

• q4c12-defrost is like Stack's pvp-bounds feature, except it works on Cabal's freeze files instead. If you test your code against a set of freeze files, defrost can add the PVP bounds to your .cabal file corresponding to the dependency versions in those freeze files.

• q4c12-freeze-plan takes a plan.json and turns it into a freeze file. Maybe someday I'll polish it up and get it into upstream cabal-install as a better version of v2-freeze that produces tight constraints.

• q4c12-project-file is a horribly incomplete parser and renderer for Cabal's .project configuration files.

XML

• q4c12-xhtml2html converts from the XML syntax to the HTML syntax.

• q4c12-xml-core is an opinionated XML parser/renderer that tries to stick to the spec where it's sensible and to drop things that aren't sensible.

• q4c12-xml-desc uses q4c12-xml-core to build a RELAX NG schema generator. Write a parser, and get a renderer and schema for no extra effort!

Miscellanea

• q4c12-dhondt is a simulation of a d'Hondt proportional representation election.

• q4c12-meta is local housekeeping. It generates the .travis.yml script for CI and the various GHC-version-specific .project files under cabal/, as well as tending to the freeze files. It's working well for me so far, so maybe I should try to turn it into a generally useful thing.

• q4c12-prelude is that hippest thing, an alternative Prelude. Its module is actually called Prelude; use it with base-noprelude, or with mixins: base hiding (Prelude) alongside build-depends: base.

  It's not very comprehensive: I'm adding things as I find I need them.

• q4c12-romnum is a Roman numeral generator.

License

The contents of this repository are dual-licensed under either the Apache license, version 2.0, or the GNU Lesser General Public License, version 2.1 or later, at the recepient's choice.