jan kili (Sep 28 2022 at 02:24): jan kili (Sep 28 2022 at 02:24):Can an interface import from another interface?
jan kili (Sep 28 2022 at 02:25):I expected yes, as an interface has an import section in its header... but it's just freezing/hanging the type checker
Ayaz Hafiz (Sep 28 2022 at 02:25):yes
Ayaz Hafiz (Sep 28 2022 at 02:25):do you have a minimal reproducer?
jan kili (Sep 28 2022 at 02:25):one moment
jan kili (Sep 28 2022 at 02:26)::face_palm:
jan kili (Sep 28 2022 at 02:26):nevermind.
jan kili (Sep 28 2022 at 02:26):Fun edge case, though!
Ayaz Hafiz (Sep 28 2022 at 02:28):was it a cyclic import?
jan kili (Sep 28 2022 at 02:28):Foo.roc
interface Foo
exposes []
imports [Bar]
baz = Bar.baz
Bar.roc
interface Foo
exposes [baz]
imports []
baz = 123
jan@mackey rocbox % roc check Bar.roc
0 errors and 0 warnings found in 13 ms.
jan@mackey rocbox % roc check Foo.roc
Naming the child the same as the parent hangs the type checker
Ayaz Hafiz (Sep 28 2022 at 02:28):ah yeah. that’s been a long standing open issue
jan kili (Sep 28 2022 at 02:29):A copy/paste mistake, and an easy one to make :/
Ayaz Hafiz (Sep 28 2022 at 02:29):probably worth bumping the priority on that issue. it happens way too often
jan kili (Sep 28 2022 at 02:30):https://github.com/roc-lang/roc/issues/3440
and/or
https://github.com/roc-lang/roc/issues/4050
?
jan kili (Sep 28 2022 at 02:31):Bumped. Thank you, @Ayaz Hafiz !
Lucasrezzaghi (Sep 28 2022 at 12:18):I don't know, but could this issue be related somehow?
https://github.com/roc-lang/roc/issues/4094
jan kili (Sep 28 2022 at 13:00):Yes, it looks like interface/module resolution has one or more ways to get silently stuck, which is frustrating for app developers (as is having to put all interfaces in the same directory as your app)
Ayaz Hafiz (Oct 04 2022 at 13:46):This should all be fixed by https://github.com/roc-lang/roc/pull/4125
Ayaz Hafiz (Oct 04 2022 at 13:47):I was going to mark this topic as resolved but looks like I don't have sufficient permissions
Notification Bot (Oct 04 2022 at 13:50):Anton has marked this topic as resolved.
jan kili (Oct 04 2022 at 19:22)::tada: Thank you, @Ayaz Hafiz & @Folkert de Vries !
Last updated: Jul 26 2025 at 12:14 UTC