Paul Cadman 0a8799a344 Use a Juvix source file to define a package (#2434) ... Depends on: * ~~https://github.com/anoma/juvix/pull/2459~~ * https://github.com/anoma/juvix/pull/2462 This PR is part of a series implementing: * https://github.com/anoma/juvix/issues/2336 This PR adds the package file loading function, including a file evaluation effect. It integrates this with the existing `readPackage` function and adds tests / smoke tests. ## Package.juvix format Instead of `juvix.yaml` (which is still supported currently) users can now place a `Package.juvix` file in the root of their project. The simplest `Package.juvix` file you can write is: ``` module Package; import PackageDescription open; package : Package := defaultPackage; ``` The [PackageDescription](35b2f618f0/include/package/PackageDescription.juvix) module defines the `Package` type. Users can use "go-to definition" in their IDE from the Package file to see the documentation and definitions. Users may also import `Stdlib.Prelude` in their Package file. This is loaded from the global project. No other module imports are supported. Notes: * If a directory contains both `Package.juvix` and `juvix.yaml` then `Package.juvix` is used in preference. ## Default stdlib dependency The `Dependency` type has a constructor called `defaultStdlib`. This means that any project can use the compiler builtin standard library dependency. With `juvix.yaml` this dependency is only available when the `dependencies` field is unspecified. ``` module Package; import PackageDescription open; package : Package := defaultPackage { dependencies := [defaultStdlib] }; ``` ## Validation As well as the standard type checking validation that the Juvix compiler provides additional validation is made on the file. * The Package module must contain the identifier `package` and it must have type `Package` that's obtained from the global `PackageDescription` module. * Every dependency specified in the Package.juvix must be unique. * Closes https://github.com/anoma/juvix/issues/2336 ## Examples ### Package with name and version ``` module Package; import PackageDescription open; package : Package := defaultPackage {name := "a-package"; version := mkVersion 0 1 0}; ``` ### Package with GitHub dependency ``` module Package; import PackageDescription open; package : Package := defaultPackage {name := "a-package"; version := mkVersion 0 1 0; dependencies := [defaultStdlib; github (org := "anoma"; repo := "juvix-containers"; ref := "v0.7.1")]}; ``` ## Package with main and buildDir fields ``` module Package; import Stdlib.Prelude open; import PackageDescription open; package : Package := defaultPackage {name := "a-package"; version := mkVersion 0 1 0; dependencies := [defaultStdlib; github (org := "anoma"; repo := "juvix-containers"; ref := "v0.7.1")]; buildDir := just "/tmp/build"; main := just "HelloWorld.juvix" }; ```		2023-10-27 12:35:20 +01:00
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Negative.hs	Dependent default values (#2446)	2023-10-27 10:19:07 +02:00
Positive.hs	Use a Juvix source file to define a package (#2434)	2023-10-27 12:35:20 +01:00