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`.
Fixes https://github.com/dhall-lang/dhall-haskell/issues/645
Fixes https://github.com/dhall-lang/dhall-lang/issues/216
This updates the `README` with the following changes:
* Points to the language-agnostic `README` in the `dhall-lang` repository
* Retains only Haskell-specific sections of interest
* Removes the embedded LICENSE now that GitHub auto-recognizes the project
license (#644)
* Changes the Quick Start instructions to use Nix
* Adds instructions for project development using Nix
The latter two points entailed refactors to the Nix logic to simplify the
user experience:
* `default.nix` was moved to `shared.nix` and replaced with a new `default.nix`
that works out-of-the-box with `nix-build`
* There is a new `nix/test-dhall.nix` which users can use to create a
`nix-shell` with Dhall as a dependency
... as requested by @jneira so that Dhall will continue to work as a
dependency of Eta, which is built using GHC 7.10.3
This adds CI support for testing the build against GHC 7.10.3 and also
fixes issues building against that GHC version that were caught in the process
* Benchmark Prelude files
* Add issue 108 example
* Some cleaning up
* Remove printing of files
* Add bounds
* Clean cabal formatting
* Add benchmark examples to extra source files
* Add Nix support for benchmarks
* This doesn't (yet) run or build the benchmarks in CI due to the long time
to execute all of them, but this does add them to the `shell.nix` so that
they can be run using local development
