Circular dependency error on ng update

[cyrilletuzi]

Versions

cli v6.0.0-rc.5

Repro steps

From an Angular 5 project with Material:

• npm install @angular/cli@next
• ng update @angular/cli --migrate-only --from 1

If doing the Angular/RxJS update first:
ng update @angular/core --next
Errors to:
Package "@angular/cdk" has an incompatible peer dependency to "@angular/common" (requires "^5.0.0", would install "6.0.0-rc.5").

If doing the Material update first:
ng update @angular/material --next
Errors to:
Package "@angular/common" has an incompatible peer dependency to "rxjs" (requires "^6.0.0-rc.0", would install "5.5.10")

If doing a global update:
ng update --next --all
Errors to:
Package "@angular/core" has an incompatible peer dependency to "rxjs"

Maybe it's just because of the --next option which causes a version mismatch, or because rxjs use rc tag instead of next tag, but not sure, so signaling.

[hansl]

You can use --force to force it. I think the better approach is to update Angular Core first. There will be a material update that's compatible with Angular 6 (it already is, just didn't say so in the package.json).

[hansl]

Marking this as required, but I don't think there's a proper path to fixing this. We just need to have our documentation in order when doing the update.

[hansl]

Special casing Angular X to be also compatible with Angular X+1 (therefore a peer dep to Angular Core 5.x will be compatible with 6.x), but NOT X-1 (e.g. 4).

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