dhall v1.29.0 Release Notes
Release Date: 2020-01-13 // over 4 years ago-
- 🚀 Supports version 13.0.0 of the standard
- 💥 BREAKING CHANGE: Generate Haskell datatype declarations from Dhall types
- You can now use the
makeHaskellTypeFromUnionTemplate Haskell utility
to generate a Haskell datatype declaration from a Dhall union type - This helps ensure that your Haskell types and Dhall types stay in sync,
when you want the Dhall type to be the source of truth - This is a breaking change because the default
InterpretOptionschanged
0️⃣ the default handling of singleton constructors fromWrappedtoSmart - You can preserve the old behavior using:
0️⃣autoWith defaultInterpretOptions{ singletonConstructors = Wrapped }
- You can now use the
- 🐛 BUG FIX: Fix
dhall freeze --cacheanddhall lintto preservelet-related comments- Now they match the behavior of
dhall formatwith regard to preserving
these comments
- Now they match the behavior of
- 🐛 BUG FIX: Fix escaping of significant leading whitespace when formatting code
- The formatter would sometimes unnecessarily escape significant leading
whitespace for the final line of multiline string literals, which this
🔄 change fixes
- The formatter would sometimes unnecessarily escape significant leading
- 🐛 BUG FIX: Fix
dhall encode --jsonforDoublevalues - 🆕 NEW FEATURE:
dhall to-directory-treecommand- You can now generate a directory tree from a Dhall expression
- Specifically:
- records are converted to directories
Textfields are converted to files named after the fieldOptionalvalues are omitted ifNone- Everything else is rejected
- 🆕 NEW FEATURE: Hexadecimal literals
- See the changelog for standard version 13.0.0 for more details
- 🆕 NEW FEATURE:
mergeworks onOptionalvalues- See the changelog for standard version 13.0.0 for more details
- Improve formatter
dhall formatwill now render expressions nested inside record fields or
alternatives more compactly, including:- Records
- Record completion expressions
- Expressions wrapped in
Some - Lists
- Exclude the
using ...suffix from imports listed bydhall resolve- Specifically when using the
--{immediate,transitive}-dependenciesflags
- Specifically when using the