How to add multiple workspaces in app through yarn workspaces - yarnpkg

Question

I'm creating an app which depends on a module. File structure of the application is...
demo-app
|
|----package.json("workspaces": ["module-core/packages/*","src/packages/*" ])
|----src/
| |---packages/
| |---package.json ("workspaces": ["packages/*"])
| |---module-a
| |---package.json("name":"#app/module-a","private":true, "workspaces": ["packages/*"])
| |---module-b
| |---package.json("name":"#app/module-b","private":true, "workspaces": ["packages/*"])
|
|----module-core/
| |---package.json ("workspaces": ["packages/*"])
| |---packages/
| |---core-a
| |---package.json("name":"#app/core-a","private":true, "workspaces": ["packages/*"])
| |---core-b
| |---package.json("name":"#app/core-b","private":true, "workspaces": ["packages/*"])
Here,
#app/module-a is dependent on #app/core-a and #app/module-b is dependent on #app/core-b.
I created a workspace in the demo app "workspaces": ["module-core/packages/*","src/packages/*"].
When running yarn install it a prompt error Couldn't find package "#app/module-a#^0.0.0" required by "#app/module-a#0.1.0" on the "npm" registry.
is it missing in workspace management?

Answer 1

I'm able to build the workspace just enabling the property "private":true
file: demo-app/package.json
{
"version": "1.0.0",
"private": true,
"workspaces": ["module-core/packages/*","src/packages/*"]
......
......
}
Note: Order of packages in the workspaces are important.