Hi, I am trying to use system dev-lang/rust (current stable 1.59) while developing in IntelliJ IDEA with the Rust plugin. The problem I've found is that code couldn't be run under coverage (regular builds and execution are OK). I'm getting the following error: >cargo can't find crate for `profiler_builtins` I'm pretty newbie with rust, but looks like the problem is in current ebuild, where profiler option is always set to `false` (anyway, I didn't notice if any existing USE-flags should change this switch). I've done some *homework* and created ebuild in local overlay with just `profiler=true` option and currently I am able to run project under coverage. But I have two main concerns about such a solution: 1. Looks like it won't work for any platform (as I've found on github, some rustc targets doesn't support profiling and it will cause failures during emerge). 2. Maybe this feature isn't needed as separate USE-flag and will fit perfectly to current `debug` flag. P.S. I didn't check rust-bin
hi, looking at it right now. looks like we also want to install rust-demangler tool if profiler is enabled.
as for rust-bin - does not look possible. there are nightly tarballs with profiler enabled, but not release ones. I'm still not sure if profiler requires USE=nightly, so that's something else to test.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=2823c9e4b8bdda0b1adb9d534f316f18ee069fae commit 2823c9e4b8bdda0b1adb9d534f316f18ee069fae Author: Georgy Yakovlev <gyakovlev@gentoo.org> AuthorDate: 2022-05-24 17:21:11 +0000 Commit: Georgy Yakovlev <gyakovlev@gentoo.org> CommitDate: 2022-05-24 18:08:27 +0000 dev-lang/rust: add profiler useflag Bug: https://bugs.gentoo.org/843815 Signed-off-by: Georgy Yakovlev <gyakovlev@gentoo.org> dev-lang/rust/metadata.xml | 1 + dev-lang/rust/rust-1.60.0.ebuild | 11 +++++++++-- 2 files changed, 10 insertions(+), 2 deletions(-) https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=dab3bc4a74628a8666248c3757089e67f3241289 commit dab3bc4a74628a8666248c3757089e67f3241289 Author: Georgy Yakovlev <gyakovlev@gentoo.org> AuthorDate: 2022-05-24 17:22:18 +0000 Commit: Georgy Yakovlev <gyakovlev@gentoo.org> CommitDate: 2022-05-24 18:08:26 +0000 profiles/base: stable-mask rust[profiler] Bug: https://bugs.gentoo.org/843815 Signed-off-by: Georgy Yakovlev <gyakovlev@gentoo.org> profiles/base/package.use.stable.mask | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
added to 1.60.0, please test if it works for you if possible. if no negative feedback received I might port it back to 1.59.0, since it's going to be stable until llvm-14 is stable.
I will be adding rust 1.61.0 today btw, so that one is probably better to test than 1.60.0
Hi! I've emerged rust-1.61.0 with 'profiler' USE-flag and everything works fine on my amd64 machine. Thanks a lot!
thanks for testing! I'll close this one now. I tested profiler on different arches, works for far on amd64, ppc64, arm64. So I don't think we need a mask right now, but if someone reports an arch specific failure/incompatibility - we'll mask this flag on that arch. It's stable-masked for now (which does not matter if you use ~arch rust). I'll look at removing stable-mask after llvm14/rust-1.60+ go stable.
