`dhall lint` would fail on the following expression:
```
let replicate = https://prelude.dhall-lang.org/List/replicate
in let Config = { name : Text, age : Natural }
in let Configs = List Config
in replicate 10 Text "!"
```
... because the code (incorrectly) assumed that simplifying an inner
`let` binding would preserve at least one `let` binding. However, when the
outer `let` (beginning with `let replicate`) is simplified the inner `let`
(beginning with `let Config`) simplifies down to just `replicate 10 Text "!"`
which has no `let` binding at all, leading to a pattern match failure.
This change fixes that by extending the code to correctly handle that case
with an exhaustive pattern match.
... as standardized in https://github.com/dhall-lang/dhall-lang/pull/307
Note that this a breaking change because:
* Newlines are now mandatory after the opening `''` of a multi-line
literal
* The spaces before the trailing `''` count towards the leading
indentation computation
This adds three new Nix build products:
* `try-dhall-static` - The static assets for "Try Dhall"
* `try-dhall-server` - A script which serves the static assets for local
debugging
* `tarball-try-dhall` - A tarball of the static assets
This is powered by a new small `dhall-try` package which is also included
in this change.
Fixes#714
This adds a `--json` flag that `dhall decode` and `dhall encode` can use to
read/write the equivalent JSON representation of the CBOR. This comes in
handy for the parsing compliance tests which use this CBOR-as-JSON as the
standard representation of the abstract syntax tree.
Fixes#509
The `Dhall.Import.HTTP` module had logic for pretty-printing HTTP error
message, but this logic wasn't being used anywhere! This change fixes
that and also polishes the error messages a little bit.
* Add dotgen as a dependency
Signed-off-by: Basile Henry <bjm.henry@gmail.com>
* Build up dot graph while resolving imports
Signed-off-by: Basile Henry <bjm.henry@gmail.com>
* Add --dot option to resolve in CLI
Signed-off-by: Basile Henry <bjm.henry@gmail.com>
* Handle diamond dependencies in dot graph
* Refactor dot graph generation
`dhall lint` was incorrectly deleting `let` bindings that are being used
due to not checking other `let` bindings within the same multi-`let`
expression for free variable occurrences.
This change fixes that and adds the first regression test for `dhall
lint`
This begins updates the filesystem layout for the tests to match
the new layout from the standard test suite (See:
https://github.com/dhall-lang/dhall-lang/pull/265)
This is still missing a part of the standard requirement, which is checking
parsing and import test results against an expected output (instead of
just checking that they succeed). I plan to add that in a subsequent
pull request. This is mainly to unblock other features that require using
the new standard layout.
The issue was that the parser was attempting to parse // first, which
will succeed on the prefix of //\\, then the parser will get an error
because it expects a sub expression but the input is \\.
The motivation for this change is:
* To catch build failures in downstream packages whenever we make a breaking
change to the `dhall` API
* To reduce the amount of work I need in order to cut a release for all of
these packages
* To better share Nix/CI-related logic between the projects
Note that I have not yet migrated `dhall-nix` in. I'm waiting for
https://github.com/dhall-lang/dhall-nix/issues/17 to be fixed since
`dhall-nix` is incompatible with later versions of `megaparsec` due to
`hnix`.
Gabriel Gonzalez
Javier Neira
Fintan Halpenny
Basile Henry
Dan Burton
Sofia Rose