The Haskell libraries in the Plutus Platform can be built in a number of ways. The prerequisites depend on how you want to build the libraries. The other artifacts (docs etc.) are most easily built with Nix, so we recommend installing it regardless.

There is an example project in the example folder, see its README for more details.

1. Install Docker following the instructions on the Docker website.

2. Run nix build -f default.nix docker.plutusPlaygroundImage, to build

3. Run docker load < docker-image-plutus-playgrounds.tar.gz - this will print out the image name at the end, e.g. Loaded image: plutus-playgrounds:yn7h7m5qdjnnj9rxv8cgkvvwjkkcdnvp

4. Run docker run --mount 'type=bind,source=/tmp,target=/tmp' -p 8080:8080 plutus-playgrounds:yn7h7m5qdjnnj9rxv8cgkvvwjkkcdnvp using the image name from the previous step.

5. Open http://localhost:8080/ in a web browser.

The doc folder contains the documentation site.

To build a full HTML version of the site that you can view locally, build the docs.site attribute using Nix.

There is a comprehensive glossary in GLOSSARY.

The changelog is stored in CHANGELOG.

We track our issues on the GitHub Issue tracker.

We’re active on the Cardano forum. Tag your post with the plutus tag so we’ll see it.

Use the Github issue tracker for bugs and feature requests, but keep other discussions to the forum.

See CONTRIBUTING, which describes our processes in more detail including development environments; and ARCHITECTURE, which describes the structure of the repository.

Adding the IOHK binary cache to your Nix configuration will speed up builds a lot, since many things will have been built already by our CI.

If you find you are building packages that are not defined in this repository, or if the build seems to take a very long time then you may not have this set up properly.

To set up the cache:

1. On non-NixOS, edit /etc/nix/nix.conf and add the following lines:

   substituters        = https://hydra.iohk.io https://iohk.cachix.org https://cache.nixos.org/
   trusted-public-keys = hydra.iohk.io:f/Ea s dFdN 3Y/G FDgSq a5NEWhJGzdjvKNGv0/EQ= iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti NEO2/nhblbov/8MW7Rqoo= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=

2. On NixOS, set the following NixOS options:

   nix = {
     binaryCaches          = [ "https://hydra.iohk.io" "https://iohk.cachix.org" ];
     binaryCachePublicKeys = [ "hydra.iohk.io:f/Ea s dFdN 3Y/G FDgSq a5NEWhJGzdjvKNGv0/EQ=" "iohk.cachix.org-1:DpRUyj7h7V830dp/i6Nti NEO2/nhblbov/8MW7Rqoo=" ];
   };

Nix on macOS can be a bit tricky. In particular, sandboxing is disabled by default, which can lead to strange failures.

These days it should be safe to turn on sandboxing on macOS with a few exceptions. Consider setting the following Nix settings, in the same way as in previous section:

default.nix defines a package set with attributes for all the artifacts you can build from this repository. These can be built using nix build. For example:

• Project packages: defined inside haskell.projectPackages

  • e.g. haskell.projectPackages.plutus-core

• Documents: defined inside docs

  • e.g. docs.plutus-core-spec

• Development scripts: defined inside dev

  • e.g. dev.scripts.fixStylishHaskell

There are other attributes defined in default.nix.