Practical overview
When it fits
Choose Reach when your task is developing a blockchain dApp in its language or preparing a local environment for compiler work, and its documented network ecosystems match your project.
Who it is for
- Developers writing decentralized applications in Reach's domain-specific language.
- Developers preparing an environment to work on the Reach compiler.
Documented uses
- Write blockchain dApps using Reach's DSL.
- Prepare compiler dependencies on macOS or Ubuntu.
- Refer to repository dependency-version information when setting up compiler development.
Requirements & limits
The repository is public and licensed under Apache-2.0. Compiler-development setup instructions are provided for macOS and Ubuntu.
- Reach is a language and compiler environment, not a finished consumer-facing dApp.
- Compiler development requires Stack, Z3, solc, goal or goal-devnet linked as goal, and mo.
- The README cautions that its package installation commands may not install the exact dependency versions; it points to DEPS and the Reach compiler Dockerfile for version details.
- The repository lists Algorand, Ethereum and Conflux as deployment ecosystems.
Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.
Prepare a compiler development environment on macOS
Install the documented compiler-development tools on macOS before working on the Reach compiler.
Before you start
- macOS
- Homebrew
- The repository lists Stack, Z3, Solidity, and mo among compiler-development dependencies.
Steps
Tap the Ethereum Homebrew repository with
brew tap ethereum/ethereum.Install the listed packages with
brew install haskell-stack z3 solidity.Download
mo, make it executable, and move it to/usr/local/bin/using the README commands.Consult the repository's DEPS file and
hs/Dockerfile.reachcif exact dependency versions matter.
Expected outcome
The documented macOS installation commands install the listed compiler tools; the repository notes they may not select the exact required versions.
Guide limitations
- The repository warns that these commands may install dependency versions that differ from the required versions.
- The documented steps set up dependencies; they do not describe compiling or deploying a dApp.
Sources & review
Source record details
- Source availability
- Active
- Sources checked
- 15 October 2026
- Original website title
- reach-sh/reach-lang · Official homepage title · retained in its source language

