Loom

Why it's an extraordinary adventure with an interface on magic... stunning, high-resolution, 3D landscapes... sophisticated score and musical effects. Not to mention the detailed animation and special effects, elegant point 'n' click control of characters, objects, and magic spells.

Beat the rush! Go out and buy Loom™ today!

• Cobb, The Secret of Monkey Island

Loom is a project for developing, building and packaging web-based projects.

Command line

# Build and package the required resources
loom build

# Start a running process that serves up a "live" web version of this library
# and watches the filesystem for changes
loom watch

Configuration

Loom is configured via a single loom.toml file in the root of the project.

Other loom libraries can be referenced in the set of dependencies. This will include all their components/sass files as if they were directly referenced by this project, and will be visible in the generated site.

Javascript and Purescript files inside components will be automatically discovered and added to a main bundle. Users can also specify custom JS bundles. An example first bundle is provided below.

Javascript dependencies can be sourced from the NPM registry, but we require the SHA1 hash of each dependencys source tarball alongside its version tag. This will be validated on fetch to catch unexpected upstream changes. Dependency tarballs will be cached in $HOME/.loom.

Javascript and Purescript dependencies can also be sourced from Github using a repository identifier, a Git ref, and the source tarball's SHA1 hash.

[loom]
  # Mandatory
  version = 1

  # Mandatory
  name = "my_project"

  # Optional
  dependencies = ["lib/bikeshed"]

[components]
  # Optional
  paths = ["components/*"]

[sass]
  # Optional
  paths = ["scss/*"]

[js]
  # Optional
  paths = [
      "app/src/js/common/*"
    ]

[js.bundle.first]
  main = "app/src/js/first.js"
  # Optional
  paths = [
      "app/src/js/first/*"
    ]

[js.dependencies]
  # Optional
  npm = [
      ["d3", "4.7.4", "a2f40eb57decc51bc469010d48ae74a20e025772"]
    ]
  github = [
      ["isaacs/rimraf", "tags/v2.6.1", "813139ac3628ae0b47136de18939cbb623e21475"]
    ]

[purs]
  # Optional
  paths = [
      "app/src/purs"
    ]

[purs.dependencies]
  # Optional
  github = [
      ["purescript/purescript-newtype", "tags/v2.0.0", "2276bd44ff5b7440c455839833c69f40cc8d8616"]
    ]

[purs.test]
  main = "Test.Main"

  # Optional
  paths = [
      "app/test/purs"
    ]

[purs.test.dependencies]
  # Optional
  github = [
      ["bodil/purescript-test-unit", "tags/v9.1.0", "e1c16b5a0277f2d017c2279ba1dc2f42be36fc33"]
    ]

Environment variables

• LOOM_SITE_PREFIX

  The prefix root to use for all links rendered on the generated site. This can be used if the site is being hosted under a sub-prefix.

  An example of this might be publishing the site for the current commit to s3 to be reviewed as part of a pull request.

  Defaults to "/".

Setting up a new Haskell project with Loom

Where $PROJECT is the name of your project.

1. git submodule add git@github.com:ambiata/loom.git lib/loom

2. cp lib/loom/scripts/loom .

3. echo .loom >> .gitignore

4. printf "[loom]\n version = 1\n name = \"$PROJECT\"\n" > loom.toml

5. Add $PROJECT-loom package to your cabal build-depends dependencies

6. Import $PROJECT.Assets into your main and compose assetMiddleware with your existing Middleware

7. Render the template html to the relevant format using hydrant:

   import qualified Hydrant as Hydrant
   import qualified $PROJECT.Assets as Assets
   import qualified $PROJECT.Modules.Template as Template
   ...
   html =
     Hydrant.to??? . Hydrant.doctype "html" . Template.frame Assets.css $
       Template.myTemplate
   

   In this case Assets.css is a generated function with all the relevant css files.

Prerequisites

• sassc

  Currently sassc is required to be on the $PATH. It can be installed with one of the following options:

  • For OSX users: brew install sassc
  • For Arch users: pacman -S sassc
  • Everyone else: https://github.com/sass/sassc#documentation

• node

  Currently node is required to be on the $PATH. Node is required to post-process Javascript and Purescript, and to run Purescript test suites. It can be installed with one of the following options:

  • For OSX users: brew install node
  • For Arch users: pacman -S node
  • Everyone else: https://nodejs.org/en/download