* Implements code generation through Rust.
* CLI: adds two `dev` compilation targets:
1. `rust` for generating Rust code
2. `native-rust` for generating a native executable via Rust
* Adds end-to-end tests for compilation from Juvix to native executable
via Rust.
* A target for RISC0 needs to be added in a separate PR building on this
one.
* Closes#2781
* This PR only implements the Rust runtime. The Rust backend / code
generation need to be implemented in a separate PR.
* The tests are unit tests for different modules and tests with
"manually" compiled Juvix programs.
* Adds building & testing of the Rust runtime to the CI.
See test failure:
https://github.com/anoma/juvix/actions/runs/8466758094/job/23196216342
```
Test030: Ackermann function (higher-order definition): FAIL (7.40s)
Translate to JuvixCore (6.92s)
Translate to CASM (0.06s)
Pretty print (0.15s)
Interpret (0.12s)
Compare expected and actual program output
Check run_cairo_vm.sh is on path
Serialize to Cairo bytecode
Run Cairo VM (0.14s)
/tmp/tmp-60ba562ca9d8f9b5: changeWorkingDirectory: does not exist (No such file or directory)
Use -p '/Juvix to CASM positive tests (no optimization).Test030: Ackermann function (higher-order definition)/' to rerun this test only.
```
`setCurrentDir` cannot be used because tests are run at the same time on
different threads.
This PR removes `setCurrentDir` and instead passes the CWD directly to
the `proc` call.
Now the prelude exports this function:
```
readFile :: (MonadIO m) => Path Abs File -> m Text
readFile = liftIO . Utf8.readFile . toFilePath
```
It is more convenient to use because it uses typed `Path` and works in
any `MonadIO`.
This PR contains refactors split out from the Nockma compile PR
https://github.com/anoma/juvix/pull/2570. Each refactor is associated
with a separate commit in this PR.
* Closes#2154
* Evaluates closed applications with value arguments when the result
type is zero-order. For example, `3 + 4` is evaluated to `7`, and `id 3`
is evaluated to `3`, but `id id` is not evaluated because the target
type is not zero-order (it's a function type).
