how do I use the component-library-and-project sample?

I'm trying the demos in this project and I'm stuck with component-library-and-project.
I see there are two bs project; complib and app.
I cloned the repo on my machine, entered in complib folder and successfully run bsc that created complib/out/complib.zip.
Now I want to "use" this library in app.
Running bsc inside app just return errors.
On https://github.com/rokucommunity/sample-projects/blob/de0ade935112613b63af83cdf51ade02c928ce51/component-library-and-project/app/manifest#L10 I see that it expect to download complib.zip from http.
I changed to point to localhost and started a webserver locally (just python3 -mhttp.server in the complib/out folder). I can succesfully download the .zip file from firefox.
Still, I have errors running bsc:

.../component-library-and-project/app$ bsc
[03:37:09:7520 PM]  No bsconfig.json file found, using default options
[03:37:09:7550 PM]  Loading 0 plugins for cwd ".../component-library-and-project/app"
[03:37:09:7590 PM]  Parsing files
[03:37:09:7870 PM]  Parsing files finished. (27.954ms)
[03:37:09:7880 PM]  Validating project
[03:37:09:7920 PM]  Validating project finished. (4.132ms)

components/MainScene.brs:28:9 - error BS1001: Cannot find name 'dialog'

 28          dialog.update({
 __          ~~~~~~

[03:37:09:7940 PM]  Found 1 error
$

what I'm missing?

Start with component-library-and-project/app/manifest and components/MainScene.brs, then compare the build steps for complib and app. Run bsc in both directories and verify that the app build resolves complib/out/complib.zip and no longer reports the missing dialog name.