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package.json workflow for native development with Reason/OCaml
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README.md

esy

package.json workflow for native development with Reason/OCaml.

Build Status

This README serves as a development documentation for esy. For user documentation refer to esy.sh documentation site.

Repository structure

The following snippet lists esy repository structured (omitting irrelevant or obvious items) with further explanations:

├── CHANGELOG.md
├── LICENSE
├── README.md
│
├── Makefile
│   Common tasks and workflows for esy development.
│
├── bin/esy
│   symlink (wrapper on Windows) for esy command, used for running tests
│
├── bin/esyInstallRelease.js
│   postinstall step for npm releases produced with `esy npm-release`
│   command. This is a built JS file which is developed in a separate flow
│   inside `esy-install-npm-release/` subdirectory (see below).
│
├── docs
│   esy end user documentation in markdown format.
│
├── dune
├── dune-project
│
├── esy
│   This dune library implements sandbox builder - a routine which builds
│   the enture dependency graph and provides other introspection APIs.
│
├── esy/bin
│   This dune executable implements "esy" command.
│
├── esy-solve
│   This dune library implements solver.
│
├── esy-install
│   This dune library implements installer.
│
├── esy-build-package
│   This dune library implements package builder. esy library uses this to
│   build each package.
│
├── esy-build-package/bin
│   This dune executable implements "esy-build-package" command.
│
├── esy-installer
│   Implementation of installation procedure defined with *.install files.
│   This re-implements opam-installer.
│
├── esy-install-npm-release
│   Sources for `bin/esyInstallRelease.js`.
│
├── esy-command-expression
│   Parser for #{...} syntax used in esy manifests.
│
├── esy-shell-expansion
│   A simple shell expansion.
│
├── esy-yarn-lockfile
│   Parser for a subset of yarn lockfile format.
│
├── esy-lib
│   A collection of utility modules shared between other libraries.
│
├── site
│   Sources for https://esy.sh
│
├── esy.lock
├── package.json
│
├── scripts
│
├── test
│   Unit tests.
│
├── test-e2e-slow
│   End-to-end test suite which takes a significiant amount of time.
│   We execute it on CI by placing `@slowtest` token in commit messages.
│
└── test-e2e
    End-to-end test suite.

Workflow

To make changes to esy and test them locally:

% git clone git://github.com/esy/esy.git
% cd esy
% esy
% esy bootstrap

On Linux/macOS (soon on Windows too) you can run:

% make install-githooks

which will install git hooks which will do pre commit validation.

To test the esy executable in development you can use bin/esy.

Updating bin/esyInstallRelease.js

bin/esyInstallRelease.js is developed separately within the esy-install-npm-release/ directory.

Run:

% make bin/esyInstallRelease.js

to update the bin/esyInstallRelease.js file with the latest changed, don't forget to commit it.

Running Tests

Unit tests:

% esy test:unit

E2E tests:

% esy test:e2e

Branches

There are two branches:

  • master — the active development, we cut new versions out of there regularly.
  • 0.0.x — maintainance branch for 0.0.x releases.
  • 0.2.x — maintainance branch for 0.2.x releases.
  • 0.3.x — maintainance branch for 0.3.x releases.

Workflow for esy.sh

To make changes to esy.sh:

  1. Bootstrap site's dev environment:
% make site-bootstrap
  1. Run site locally:
% make site-start
  1. When you are happy with the changes:
% make site-publish

Issues

Issues are tracked at esy/esy.

Publishing Releases

esy is released on npm.

Because esy is written in OCaml/Reason and compiled into a native executable we need to acquire a set of prebuilt binaries for each supported platform (Windows, macOS and Linux). We employ CI servers (thanks Azure) to build platform specific releases.

The release workflow is the following:

  1. Ensure you are on master branch and assuming you want to release the version currently defined in package.json (see step 6.), run

    % make release-tag
    % git push && git push --tags
    
  2. Wait till CI finishes its task and release @esy-nightly/esy package.

    You can test it manually.

  3. Run

    % make release-prepare
    

    which downloads the nightly corresponding to the current commit working directory is at and "promotes" it to a release. It will create _release/package directory.

  4. Ensure release inside _release/package directory is ok.

    You can cd _release/package && npm pack && npm install -g ./esy-*.tgz to test how release installs and feels.

  5. Run

    % make release-publish
    

    to upload the release on npm.

    Use

    % make NPM_RELEASE_TAG=next release-publish
    

    To publish release under next tag (so users won't get it automatically but only explicitly requested).

  6. Bump version in package.json to the next patch version.

    We expect next version to be patch version most of the time. In case you want to release new minor or major version you need to bump it before the reelase.

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