Sage: required to choose version of popper.js because version required differs from Bootstrap4 version

[tofraser]

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• [ ] This is a feature request
• [x] This is a bug report
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What is the current behavior?

While installing bower, I receive the following error requiring resolution:

bower resolution Unsuitable resolution declared for popper.js: e-tag:W/"13b6b-1

Unable to find a suitable version for popper.js, please choose one by typing one of the numbers below:
1) popper.js#* which resolved to e-tag:W/"13ed8-1 and is required by sage
2) popper.js#^1.11.0 which resolved to 1.12.2 and is required by bootstrap#4.0.0-beta

if the wrong version is chosen (!2), scripts throw "Uncaught Error: Bootstrap dropdown require Popper.js"

What is the expected or desired behavior?

I would expect the version of popper to match the version required by bootstrap#4.0.0-beta

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Bug report

Please provide steps to reproduce, including full log output:

install bower

Please describe your local environment:

WordPress version: NA

OS: MacOS version 10.12.5

NPM/Node version: 3.10.6/v6.2.1

Where did the bug happen? Development or remote servers?

Development

Is there a related Discourse thread or were any utilized (please link them)?

X

[retlehs]

caused by popper.js update as i suspected :(

select option 1 for now and it will update your bower.json with the new e-tag

[FezVrasta]

Popper.js is now available through Bower

[retlehs]

@FezVrasta thank you! 😍

[FezVrasta]

It will not last forever, I plan to get rid of Bower completely in v2 (this release isn't yet planned).

Consider to migrate to a modern dependencies manager system. Even Bower is suggesting people to move to npm/yarn.

[retlehs]

@FezVrasta sage 9 (master branch) dropped bower a while ago. this is for supporting the sage 8 branch