Copyright 2019 Digital Asset (Switzerland) GmbH and/or its affiliates. All Rights Reserved. SPDX-License-Identifier: Apache-2.0
This repository hosts all code for the DAML smart contract language, originally created by Digital Asset.
See our documentation at docs.daml.com.
Download the DAML SDK Developer Preview at https://www.daml.com.
If you have questions about how to use DAML or how to build DAML-based solutions, please ask them on StackOverflow using the daml tag.
We warmly welcome contributions.
git clone git@github.com:digital-asset/daml.git.
dev-env is used to provide dependencies required during build phase, like java, bazel, and python for some tooling scripts, while the code itself is built through bazel.
- Install Nix:
bash <(curl https://nixos.org/nix/install) - Enter dev-env:
eval "$(dev-env/bin/dade assist)"
To avoid entering dev-env manually each time through eval "$(dev-env/bin/dade assist)", you can also install direnv.
This repo already provides a .envrc file, with an option to add more in a
.envrc.private file.
We're working on Windows support (both users and developers), but it's not ready yet. Sign up to be notified when it is available.
bazel build //.... This will likely take an hour or more.
You have now built the code and run the tests. Rebuilding the code after a change will be significantly faster because Bazel caches unchanged build artefacts. You can read more about Bazel and how to use it here.
- Run the tests:
bazel test //...
If you are looking for ideas on how to contribute, please browse our issues.
Bazel has a lot of nice properties, but they come at the cost of frequently rebuilding "the world". To make that bearable, we make extensive use of caching. Most artifacts should be cached in our CDN, which is configured in .bazelrc in this project.
However, even then, you may end up spending a lot of time (and bandwidth!) downloading artifacts from the CDN. To alleviate that, by default, our build will create a subfolder .bazel-cache in this project and keep an on-disk cache. This can take about 10GB at the time of writing.
To disable the disk cache, simply remove the following lines:
build:linux --disk_cache=.bazel-cache
build:darwin --disk_cache=.bazel-cache
from the .bazelrc file.
If you work with multiple copies of this repository, you can point all of them to the same disk cache by overwriting these configs in either a .bazelrc.local file in each copy, or a ~/.bazelrc file in your home directory.