Lotus is an implementation of the Filecoin Distributed Storage Network. For more details about Filecoin, check out the Filecoin Spec.
Building & Documentation
Note: The default master branch is the dev branch, please use with caution. For the latest stable version, checkout the most recent Latest release.
For complete instructions on how to build, install and setup lotus, please visit https://docs.filecoin.io/get-started/lotus. Basic build instructions can be found further down in this readme.
Lotus is a universally open project and welcomes contributions of all kinds: code, docs, and more. However, before making a contribution, we ask you to heed these recommendations:
If the change is complex and requires prior discussion, open an issue or a discussion to request feedback before you start working on a pull request. This is to avoid disappointment and sunk costs, in case the change is not actually needed or accepted.
Please refrain from submitting PRs to adapt existing code to subjective preferences. The changeset should contain functional or technical improvements/enhancements, bug fixes, new features, or some other clear material contribution. Simple stylistic changes are likely to be rejected in order to reduce code churn.
When implementing a change:
Adhere to the standard Go formatting guidelines, e.g. Effective Go. Run go fmt.
Stick to the idioms and patterns used in the codebase. Familiar-looking code has a higher chance of being accepted than eerie code. Pay attention to commonly used variable and parameter names, avoidance of naked returns, error handling patterns, etc.
Comments: follow the advice on the Commentary section of Effective Go.
Minimize code churn. Modify only what is strictly necessary. Well-encapsulated changesets will get a quicker response from maintainers.
Lint your code with golangci-lint (CI will reject your PR if unlinted).
Add tests.
Title the PR in a meaningful way and describe the rationale and the thought process in the PR description.
Write clean, thoughtful, and detailed commit messages. This is even more important than the PR description, because commit messages are stored inside the Git history. One good rule is: if you are happy posting the commit message as the PR description, then it's a good commit message.
Basic Build Instructions
System-specific Software Dependencies:
Building Lotus requires some system dependencies, usually provided by your distribution.
Once all the dependencies are installed, you can build and install the Lotus suite (lotus, lotus-miner, and lotus-worker).
Clone the repository:
git clone https://github.com/filecoin-project/lotus.git
cd lotus/
Note: The default branch master is the dev branch where the latest new features, bug fixes and improvement are in. However, if you want to run lotus on Filecoin mainnet and want to run a production-ready lotus, get the latest release here.
If you are changing networks from a previous Lotus installation or there has been a network reset, read the Switch networks guide before proceeding.
For networks other than mainnet, look up the current branch or tag/commit for the network you want to join in the Filecoin networks dashboard, then build Lotus for your specific network below.
git checkout <tag_or_branch># For example:
git checkout <vX.X.X># tag for a release
Currently, the latest code on the master branch corresponds to mainnet.
This build instruction uses the prebuilt proofs binaries. If you want to build the proof binaries from source check the complete instructions. Note, if you are building the proof binaries from source, installing rustup is also needed.
Build and install Lotus:
make clean all #mainnet# Or to join a testnet or devnet:
make clean calibnet # Calibration with min 32GiB sectors
sudo make install
This will put lotus, lotus-miner and lotus-worker in /usr/local/bin.
lotus will use the $HOME/.lotus folder by default for storage (configuration, chain data, wallets, etc). See advanced options for information on how to customize the Lotus folder.
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