[Feature] Add `--mode=skip-build` to `yarn workspaces focus --production`

• I’d be willing to implement this feature (contributing guide)
• This feature is important to have in this repository; a contrib plugin wouldn’t do

Describe the user story

I have Docker image with my Node.js app. For performance and security reasons, I need:

1. Install only dependencies, not devDependnecies.
2. Do not run scripts like install

I found that I can use yarn workspaces focus --production to install production dependencies, but yarn workspaces focus have no support for --mode=skip-build.

Describe the solution you’d like

yarn workspaces focus --production --mode=skip-build

Describe the drawbacks of your solution

Do not see from my area of expertise.

Describe alternatives you’ve considered

My current solution is:

RUN yarn plugin import workspace-tools
RUN yarn install --mode=skip-build --immutable
RUN yarn workspaces focus --production

But it is slow.

[ai]

explains what causes it to re-run postinstall scripts

Oh 😰 Can we add skip-build to yarn workspaces focus?

[zyf0330]

@ai Hello, I know that yarn has a config option enableScripts which disables postinstall script. And yarn is different with npm, yarn doesn’t execute scripts except postinstall inside the install step.