1.34.0

• Supports version 17.1.0 of the standard
  • Add support for trailing commas
• BREAKING CHANGE to the API: Support prefix comments on record key-value pairs
  • The Dhall AST (i.e. Expr) now preserves some comments for record types
    and record literals
  • The impact of this change is that you will need to add
    Dhall.Syntax.makeRecordField or Dhall.Syntax.recordFieldValue in a few
    places wherever your Haskell assembles or disassembles record expressions
  • The motivation of this change is two-fold:
    • To eventually enable dhall-docs support for rendering record
      comments as documentation
    • To eventually enable support for preserving record-related comments
      when formatting Dhall code
• BUG FIX: Fix with expressions to permit functions on their left-hand side
  • This was a case of the Haskell implementation not being compliant with the
    standard grammar
• Drop support for GHC 8.2
• Add a new dhall rewrite-with-schemas command
  • You can now simplify a Dhall expression using a schema record (e.g. a
    ./schemas.dhall record that a package might provide)
  • This simplification replaces large anonymous records with an
    equivalent use of a record completion when possible
• Add --transitive flag to dhall {format,lint,freeze}
  • This flag lets you format/lint/freeze a file and all of its transitive
    dependencies that are reachable via relative file imports
• Move man/dhall.1 to data-files
  • This ensures that Cabal will install dhall's man pages in the
    correct directory
• Performance improvements
  • #1879
• Standards compliance
  • #1953
  • #1954
  • #1956
  • #1957
  • #1958
• Fixes and improvements to haddocks
  • #1881
  • #1955