Log Message:
lang/dhall: Update to 1.42.0

1.42.0
* Supports standard version 23.0.0
  - BREAKING CHANGE TO THE API AND LANGUAGE: Language support for Bytes
    literals
    * This is a breaking change to the API due to adding new Bytes and
      BytesLiteral constructors to the Expr type
    * This is a breaking change to the language now that Bytes is a
      reserved identifier
  - BREAKING CHANGE TO THE API AND LANGUAGE: New {Date,Time,TimeZone}/show
    builtins
    * This is a breaking change to the API due to adding new
      {Date,Time,TimeZone}Show constructors to the Expr type
    * This is a breaking change to the language now that
      {Date,Time,TimeZone}/show are not reserved identifiers
* BREAKING CHANGE: dhall lint no longer sorts let bindings
  - This had to be removed because the old behavior was not always correct
  - The old behavior would sometimes change the behavior of a Dhall program
    or break the program
  - Out of an abundance of caution we're disabling the feature until it can
    be properly fixed (which is't trivial)
* BUG FIX: Fix pretty-printing of Time literals
  - The pretty-printer was stripping leading zeros from the fractional
    component of seconds
* BUG FIX: Fix custom normalizers to work for things other than functions
  - Before this change you could extend the language with custom functions,
    but not custom values (e.g. foo = 1)
* BUG FIX: Don't URL encode path components
  - The pretty-printer was URL-encoding path components, which is not
    correct (according to the standard)
  - URL path components are supposed to be already URL-encoded by the user
    and left undisturbed by the interpreter (which is now what it correctly
    does)
* New dhall package command: #2478, #2508
  - This command makes it easier to turn a directory full of Dhall
    expressions into a dhall package (e.g. package.dhall)
* Improved dhall to-directory-tree subcommand
  - The dhall to-directory-tree subcommand now optionally supports
    specifying metadata for generated paths
  - For a worked example, see:
    \ 
https://github.com/dhall-lang/dhall-haskell/blob/main/dhall/examples/to-directory-tree.dhall
* dhall freeze --cache --all is now idempotent: #2486, #2500
  - Before this change a second run would fail due to attempting to resolve
    the missing import it would generate
* New Template Haskell options for adding strictness annotations to
  generated Haskell types
* Template Haskell can now generate higher-kinded Haskell types from
  higher-kinded Dhall types
* New Dhall.Freeze utilities for working with custom evaluators
* Add Data instances for Import and various other types
* Add Eq instances for InvalidDecoder and ExtractError