1.8.1 * 1.8.0 * BREAKING CHANGE TO LANGUAGE: Add support for import integrity checks * In practice, the likelihood of this breaking code in the wild is astronomically low * This would only break code of the form `sha256:aaa...aaa` (i.e. a variabled named `sha256` with a type annotation for a type with a name 64 characters long drawn from the first 6 characters of the alphabet) * BUG FIX: Fix parsing of single quotes in single-quoted strings * BUG FIX: Fix superfluous parentheses introduced by `dhall-format` * New `dhall-hash` executable * This goes hand-in-hand with the added support for integrity checks since the executable lets you compute the current hash of an import 1.7.0 * BREAKING CHANGE TO LANGUAGE: Update parser to match standardized grammar * Trailing commas and bars no longer supported for union and record literals * Paths no longer permit commas * URL grammar is now RFC-compliant * Environment variables can now be quoted to support full range of POSIX-compliant names * Text literals support full set of JSON escape sequences (such as `\u2192`) * BREAKING CHANGE TO LANGUAGE: Single quoted strings strip leading newlines * BUG FIX: Fixed type-checking infinite loops due to non-type-checked variables in context * BUG FIX: Fixed type-checking bug due to missing context when type-checking certain expressions * BUG FIX: Fixed type-checking bug due to off-by-one errors in name shadowing logic * New `dhall-format` executable to automatically format code * Performance optimizations to `Natural/fold` and `List/fold` * Improved parsing performance (over 3x faster) * Union literals can now specify the set value anywhere in the literal * i.e. `< A : Integer | B = False | C : Text >` * New `Inject` instance for `()` * Several tutorial fixes and improvements 1.6.0 * BREAKING CHANGE TO THE API: Drop support for GHC 7.* * BREAKING CHANGE TO THE API: Add support for customizing Dhall import * This is a breaking change because this changes the type of `loadWith` * BREAKING CHANGE TO THE API: Add field to `UnboundVariable` error containing * BUG FIX: Fix parsing single quotes in string literals the name of the unbound variable * Add `List/concatMap` to the Prelude * You can now derive `Inject` and `Interpret` for types with unlabeled fields * Add new instances for `Interpret`: * `[]` * `(,)` * Add new instance for `Inject` * `[]`, `Data.Set.Set`, `Data.Sequence.Seq` * `(,)` * `Int`, `Word8`, `Word16`, `Word32`, `Word64` * Add `Eq` instance for `Src` 1.5.1 * Increase upper bound on `vector` and `optparse-generic` 1.5.0 * BREAKING CHANGE: Add list concatenation operator: `(#)` * This is a breaking change because it adds a new constructor to the `Expr` type which breaks exhaustive pattern matches * BREAKING CHANGE: Add `Interpret` support for lazy `Text` * This is a breaking change because it renames `text` to `strictText` * Add `Interpret` instance for decoding (a limited subset of) Dhall functions * Dhall no longer requires Template Haskell to compile * This helps with cross-compilation * Add `rawInput` utility for decoding a Haskell value from the `Expr` type * Add `loadWith`/`normalizeWith` utilities for normalizing/importing modules with a custom context * Export `Type` constructor 1.4.2 * Fix missing `Prelude` files in package archive uploaded to Hackage 1.4.1 * Fix missing `tests/Tutorial.hs` module in package archive uploaded to Hackage 1.4.0 * BREAKING CHANGE TO THE LANGUAGE AND API: You can now supply custom headers for URL imports with the new `using` keyword * This is a breaking change to the language because this adds a new reserved `using` keyword * This is a breaking change to the API because this adds a new field to the `URL` constructor to store optional custom headers * BUG FIX: `:` is no longer a disallowed path character * This was breaking URL imports with a port * BUG FIX: If you import a home-anchored path (i.e. `~/foo`) and that imports a relative path (like `./bar`), then the canonical path of the relative import should be home-anchored (i.e. `~/bar`). However, there was a bug that made lose the home anchor (i.e. `./foo/bar`), which this release fixes likely fail due to no longer being home-anchored (i.e. `./foob * Add support for string interpolation * `merge` no longer requires a type annotation if you are merging at least one alternative * Expanded Prelude * `./Prelude/Optional/all` * `./Prelude/Optional/any` * `./Prelude/Optional/filter` * `./Prelude/Optional/length` * `./Prelude/Optional/null` * `./Prelude/Text/concatMap` * `./Prelude/Text/concatMapSep` * `./Prelude/Text/concatSep` * Rearrange detailed error messages to put summary information at the bottom of the message 1.3.0 * BREAKING CHANGE TO THE API: Add support for new primitives, specifically: * `(//)` - Right-biased and shallow record merge * `Optional/build` (now a built-in in order to support build/fold fusion) * `Natural/show` * `Integer/show` * `Double/show` * `Natural/toInteger` * These all add new constructors to the `Expr` type, which would break exhaustive pattern matches * BREAKING CHANGE TO THE LANGUAGE: Imported paths and URLs no longer support the characters: "()[]{}<>:" * This reduces the number of cases where you have to add a space after imports * Note that this does not exclude the `:` in the URL scheme (i.e. `http://`) * Increase connection timeout for imports * Variable names now allow the `-` character for all but the first character * You can now escape identifiers with backticks * This lets you name identifiers so that they don't conflict with reserved key words * This is most useful when converting Dhall to other file formats (like JSON) where you might need to emit a field that conflicts with one of Dhall's reserved keywords * New `--version` flag for the `dhall` executable 1.2.0 * BREAKING CHANGE: Add support for customizing derived `Interpret` instances * This is a breaking change to the Dhall library API since this changes the signature of the `Interpret` class by replacing the `auto` method with a more general `autoWith` method. This `autoWith` now takes an `InterpretOptions` argument that lets you customize derived field and constuctor names * In practice user programs that use the common path will be unaffected by this change * This is not a breaking change to the Dhall language * BREAKING CHANGE: Type annotations now bind more tightly than lambda abstraction * This is a breaking change to the Dhall language. An expression like this: ``` λ(x : A) → y : B ``` ... used to parenthesized implicitly as: ``` (λ(x : A) → y) : T ``` ... but is now parenthesized implicitly as: ``` λ(x : A) → (y : T) ``` This is now consistent with Haskell's precedence and also consistent with the precedence of `List` and `Optional` type annotations * This change affects programs with an expression like this: ``` -- Assuming that `y : B` λ(x : A) → y : A → B ``` The above program would type-check before this change but not type-check after this change. You would you need to fix the above program by either changing the type signature to annotate just the type of `y` like this: ``` λ(x : A) → y : B ``` ... or by adding explicit parentheses like this: ``` (λ(x : A) → y) : A → B ``` * This is not a breaking change to the Dhall library API * BREAKING CHANGE: Add support for importing a path's contents as raw `Text` by adding `as Text` after the import * This is a breaking change to the Dhall language * This is technically a breaking change, but is extremely unlikely to affect you program. This only changes the behavior of old programs that had an expression of the form: ``` /some/imported/function as Text ``` ... where `/some/imported/function` is an imported function being applied to two arguments, the first of which is a bound variable named `as` and the second of which is the type `Text` * This is not a breaking change to the Dhall library API * BREAKING CHANGE: Add support for importing environment variables using `env:VAR` syntax * This is a breaking change to the Dhall library API since it adds a new `Path` constructor * This also technically a breaking change to the Dhall language but extremely unlikely to affect your program. This only changes the behavior of old programs that had an expression of the form: ``` env:VAR ``` ... where `env` was the name of a bound variable and `:VAR` was a type annotation without spaces around the type annotation operator After this change the program would be interpreted as an import of the contents for the environment variable named `VAR` * BREAKING CHANGE: Support importing paths relative to home directory using `~/some/path` syntax * This is a breaking change to the Dhall library API since it adds a new field to the `File` constructor indicating whether or not the imported path is relative to the home directory * This is not a breaking change to the Dhall language and the new syntax does not override any old syntax * Permit trailing commas and bars in record/union syntax * Improve location information for parsing errors 1.1.0 * BREAKING CHANGE: Non-empty lists no longer require a type annotation * This is a breaking change to the Haskell library, not the Dhall language * This change does not break existing Dhall programs * The `Expr` type was modified in a non-backwards-compatible way * Add new `exprA` parser * Add new `InvalidType` exception if `input` fails on an invalid `Type` * Improve documentation and tutorial 1.0.2 * Add support for Nix-style "double single-quote" multi-line string literals * Add `isNormalized` * Improve documentation and tutorial * Build against wider range of `http-client` versions 1.0.1 * Initial release 1.0.0 * Accidental premature upload to Hackage. This release was blacklisted