Building yarn from source for a specific branch

[smijolovic]

When attempting to build yarn from source, the documentation only provides a means to build the yarn-cli bundle from the master branch.

chaasmadmin@dogfood-bravo1-source-07-07-2022:~/nimbus8/yarn/berry/scripts/bin$ ./yarn build:cli
➤ YN0000: ✓ Done building the CLI!
➤ YN0000: ? Bundle path: /home/chaasmadmin/nimbus8/yarn/berry/packages/yarnpkg-cli/bundles/yarn.js
➤ YN0000: ? Bundle size: 2.68 MB
➤ YN0000: ? Bundle version: 4.0.0-rc.14.git.20220810.hash-6386630ca

➤ YN0000: → @yarnpkg/plugin-essentials
➤ YN0000: → @yarnpkg/plugin-compat
➤ YN0000: → @yarnpkg/plugin-constraints
➤ YN0000: → @yarnpkg/plugin-dlx
➤ YN0000: → @yarnpkg/plugin-exec
➤ YN0000: → @yarnpkg/plugin-file
➤ YN0000: → @yarnpkg/plugin-git
➤ YN0000: → @yarnpkg/plugin-github
➤ YN0000: → @yarnpkg/plugin-http
➤ YN0000: → @yarnpkg/plugin-init
➤ YN0000: → @yarnpkg/plugin-interactive-tools
➤ YN0000: → @yarnpkg/plugin-link
➤ YN0000: → @yarnpkg/plugin-nm
➤ YN0000: → @yarnpkg/plugin-npm
➤ YN0000: → @yarnpkg/plugin-npm-cli
➤ YN0000: → @yarnpkg/plugin-pack
➤ YN0000: → @yarnpkg/plugin-patch
➤ YN0000: → @yarnpkg/plugin-pnp
➤ YN0000: → @yarnpkg/plugin-pnpm
➤ YN0000: → @yarnpkg/plugin-stage
➤ YN0000: → @yarnpkg/plugin-typescript
➤ YN0000: → @yarnpkg/plugin-version
➤ YN0000: → @yarnpkg/plugin-workspace-tools

This leads to a 4.0.0-rc branch build - but want to do this for a stable release branch (3.2.2 in this instance).

What is the proper way to use the 3.2.2 branch tag in git to clone the repo, and once built...what is the proper way to package yarn for a package installer (in our case a deb package)?

So far, I've been able to pull a specific tag to clone and build the bundle:

git clone -b @yarnpkg/cli/3.2.2 https://github.com/yarnpkg/berry.git

chaasmadmin@dogfood-bravo1-source-07-07-2022:~/nimbus8/yarn/3.2.2/berry/scripts/bin$ ./yarn build:cli
➤ YN0000: ✓ Done building the CLI!
➤ YN0000: ? Bundle path: /home/chaasmadmin/nimbus8/yarn/3.2.2/berry/packages/yarnpkg-cli/bundles/yarn.js
➤ YN0000: ? Bundle size: 2.06 MB
➤ YN0000: ? Bundle version: 3.2.2-git.20220721.hash-7a42886db

➤ YN0000: → @yarnpkg/plugin-essentials
➤ YN0000: → @yarnpkg/plugin-compat
➤ YN0000: → @yarnpkg/plugin-dlx
➤ YN0000: → @yarnpkg/plugin-file
➤ YN0000: → @yarnpkg/plugin-git
➤ YN0000: → @yarnpkg/plugin-github
➤ YN0000: → @yarnpkg/plugin-http
➤ YN0000: → @yarnpkg/plugin-init
➤ YN0000: → @yarnpkg/plugin-link
➤ YN0000: → @yarnpkg/plugin-nm
➤ YN0000: → @yarnpkg/plugin-npm
➤ YN0000: → @yarnpkg/plugin-npm-cli
➤ YN0000: → @yarnpkg/plugin-pack
➤ YN0000: → @yarnpkg/plugin-patch
➤ YN0000: → @yarnpkg/plugin-pnp
➤ YN0000: → @yarnpkg/plugin-pnpm

How should it be packaged to be installed globally with the bundle complete?

[merceyz]

To build a specific version of Yarn you can run the following:

git clone --depth 1 -b @yarnpkg/cli/3.2.2 https://github.com/yarnpkg/berry.git
cd berry
node ./scripts/run-yarn.js build:cli --no-git-hash

That will output a bundle of Yarn at packages/yarnpkg-cli/bundles/yarn.js which should match what we built and committed at packages/yarnpkg-cli/bin/yarn.js.
The bundle starts with #!/usr/bin/env node so you should be able to chmod +x it and make it available however you'd like.

Though note that we recommend installing Yarn with Corepack which is a binary that Node.js provides.
https://yarnpkg.com/getting-started/install
https://nodejs.org/dist/latest-v18.x/docs/api/corepack.html