https://github.com/jpablo/zenith

https://github.com/jpablo/zenith

Last synced: 10 days ago
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• Host: GitHub
• URL: https://github.com/jpablo/zenith
• Owner: jpablo
• Created: 2022-09-28T01:08:37.000Z (over 2 years ago)
• Default Branch: main
• Last Pushed: 2024-12-19T08:15:54.000Z (17 days ago)
• Last Synced: 2024-12-19T09:23:02.848Z (17 days ago)
• Language: Lean
• Size: 309 KB
• Stars: 3
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Zenith

`Zenith` is a Lean 4 library inspired by [ZIO](https://zio.dev/).

The main goals are pedagogical:

* Explore how to translate certain OO patterns into Lean

* Simple implementation of ZIO better suited for high level analysis

* Visualization of program execution

* etc

## Features

* Dependency Injection

* Error handling

* Asynchronous and Concurrent programming

* Program execution diagram

## Status

* Core data type and interpreter ✅

* Fibers ✅

* Environment ✅

* Layers ❌

## Building and running examples

* [Elan](https://github.com/leanprover/elan) is needed to install `lake`, which will in turn download project dependencies (i.e. the specific Lean 4 version).

* `VSCode` + `Lean 4` plugin is the recommended editor.

#### Compile everything once

```bash

lake build

```

#### Recompile on chage

Using the [`entr`](https://github.com/clibs/entr) file monitor

```bash

find . -name "*.lean" | entr -s 'lake build'

```

#### Run example programs

```bash

./build/bin/z

```

#### Regenerate svg diagrams

(Graphviz needs to be installed)

```bash

for f in $(find diagrams -name "*.dot"); do echo $f; dot -Tsvg $f -o diagrams/$(basename $f .dot).svg; done

```

This will (re)create a bunch of svg files under `diagrams/*`.

## Internal documentation

* [Interpreter](docs/run-loop.md)

* [Module dependencies](docs/module-dependencies.md)

* [Variance](docs/variance.md)

* [Problems](docs/Problems.md)