import some scss files into library component scss throw errors

Type of Issue

[x] Bug Report
[ ] Feature Request

Description

when trying to import bootstrap mixins @import “~bootstrap/scss/mixins”; it throw the following error ERROR: Can’t find stylesheet to import.

How To Reproduce

clone https://github.com/robertIsaac/scss-reproduce run ng build

Expected Behaviour

to build successfully

Version Information

$ node_modules/.bin/ng-packagr --version
ng-packagr:            9.1.3
@angular/compiler:     9.1.4
rollup:                2.7.5
tsickle:
typescript:            3.8.3

Please include all version numbers that might be relevant, e.g. third-party libraries

bootstrap: 4.4.1

notes

this is created by suggestion of https://github.com/angular/angular-cli/issues/17660#issuecomment-625194173

i do another two imports and they are working fine

@import "~boosted/scss/functions";
@import "~boosted/scss/variables";
@import "~boosted/scss/mixins";

and changing the import to @import "~boosted/scss/_mixins"; will make the build run successfully

it can be related to that there is a directory named mixins inside the bootstrap/scss directory, it’s just a a guess

[Sapendo]

Any updates?

[nhhockeyplayer]

why cant this be fixed? who is holding down this repo? this should have been part of the functionality prior to this even being public is the code that brittle?