# solc-select

**Repository Path**: wsldwps/solc-select

## Basic Information

- **Project Name**: solc-select
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: AGPL-3.0
- **Default Branch**: dev
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2021-11-30
- **Last Updated**: 2021-11-30

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# solc-select
A tool to quickly switch between Solidity compiler versions.

The tool is split into two CLI utilities:
- `solc-select`: manages installing and setting different `solc` compiler versions
- `solc`: wrapper around `solc` which picks the right version according to what was set via `solc-select`

The `solc` binaries are downloaded from https://binaries.soliditylang.org/ which contains
official artifacts for many historial and modern `solc` versions for Linux and macOS.

The downloaded binaries are stored in `~/.solc-select/artifacts/`.

## Quickstart

```
pip3 install solc-select
```

## Usage

The global version of `solc` can be set with the `solc-select use <version>` command:
```
$ solc --version
solc, the solidity compiler commandline interface
Version: 0.5.2+commit.1df8f40c.Linux.g++
$ solc-select use 0.4.24
Switched global version to 0.4.24
$ solc --version
solc, the solidity compiler commandline interface
Version: 0.4.24+commit.e67f0147.Linux.g++
```

Use `SOLC_VERSION` environment variable to override the global version:
```
$ solc --version
solc, the solidity compiler commandline interface
Version: 0.4.24+commit.e67f0147.Linux.g++
$ SOLC_VERSION=0.5.2 solc --version
solc, the solidity compiler commandline interface
Version: 0.5.2+commit.1df8f40c.Linux.g++
```

You can list all available versions with `solc-select install`:
```
$ solc-select install
Available versions to install:
0.3.6
0.4.0
...
0.8.0
0.8.1
```

And install the one you need with with `solc-select install <version>`:
```
$ solc-select install 0.8.1
Installing '0.8.1'...
Version '0.8.1' installed.
```

Display the currently installed versions:
```
$ solc-select versions
0.8.0
0.4.2 (current, set by /Users/artur/.solc-select/global-version)
```

## Getting Help

Feel free to stop by our [Slack channel](https://empirehacking.slack.com/) for help on using or extending `solc-select`.

## FAQ

### solc-version not changing after running `solc-select use [version]` or setting `SOLC_VERSION`

Uninstall other installations of solc on your machine. `solc-select` re-installs solc binaries for your operating system and acts as a wrapper for solc. With duplicate solc installations, this may result in your `solc` version not being up to date.

## Known Issues

### `SSL: CERTIFICATE_VERIFY_FAILED` on running `solc-select` commands [investigation ongoing]

**OS X**
```bash
pip3 install certifi
/Applications/Python\ 3.8/Install\ Certificates.command
```

Python distributions on OS X has no certificates and cannot validate SSL connections, a breaking change introduced in Python 3.6. See [StackOverflow](https://stackoverflow.com/a/42334357) post for additional details.

### `Connection refused` [investigation ongoing]

```bash
pip3 uninstall solc-select 
pip3 install solc-select==0.2.0
solc-select install 
```

Try downgrading to `solc-select version 0.2.0`. 

Our `0.2.1` version of `solc-select` pulls older Linux binaries from [crytic/solc](https://github.com/crytic/solc) which seems to have introduced unexpected behavior in certain instances.


## License

`solc-select` is licensed and distributed under the [AGPLv3](LICENSE) license. [Contact us](mailto:opensource@trailofbits.com) if you’re looking for an exception to the terms.