dank (Feb 21 2023 at 21:53): dank (Feb 21 2023 at 21:53):there seems to be a nixos issue when testing code in a path that differs from the roc compiler directory
https://gist.githubusercontent.com/dankeyy/6497117f3f1550df6340733ed5de74d0/raw/39678d9d8133e11ce149fec6cc005bd93d6b545b/patherr.txt
I guess this is more of a nixos error than roc error? but still perhaps we could come to a solution for it
dank (Feb 22 2023 at 07:31):is it planned for the roc compiler itself to ever statically link with musl?
that would be so convenient
Anton (Feb 22 2023 at 08:32):I think we've talked about it before but I don't remember what we concluded.
Anton (Feb 22 2023 at 08:45):dank said:
there seems to be a nixos issue when testing code in a path that differs from the roc compiler directory
https://gist.githubusercontent.com/dankeyy/6497117f3f1550df6340733ed5de74d0/raw/39678d9d8133e11ce149fec6cc005bd93d6b545b/patherr.txtI guess this is more of a nixos error than roc error? but still perhaps we could come to a solution for it
Can you make an issue for this to improve the error message?
For now I think we should recommend using nix-build (using the default.nix). For a nicer long-term fix I expect we can patch the binary with the path we set in NIX_GLIBC_PATH but that may not be straightforward.
dank (Feb 22 2023 at 08:49):sure
Richard Feldman (Feb 22 2023 at 16:15)::thinking: is there any reason we shouldn't statically link it with musl?
Richard Feldman (Feb 22 2023 at 16:15):my immediate thought is "yeah let's do it!" but maybe there's a reason not to which I'm missing :big_smile:
Ayaz Hafiz (Feb 22 2023 at 16:16):we should consider a different default allocator then. and probably measure the perf
Richard Feldman (Feb 22 2023 at 16:22):I thought we already switched to a nonstandard one awhile ago
Richard Feldman (Feb 22 2023 at 16:22):could be misremembering
Brendan Hansknecht (Feb 22 2023 at 17:18):We use mimalloc currently
Brendan Hansknecht (Feb 22 2023 at 17:18):Also tested tcmalloc and jemalloc.
Brendan Hansknecht (Feb 22 2023 at 17:18):Tcmalloc was the fastest for me, but Linux only and more of a pain to get working, so mimalloc was chosen in the end.
Richard Feldman (Feb 22 2023 at 17:50):nice! So is there any reason we shouldn't switch to musl on Linux?
Brendan Hansknecht (Feb 22 2023 at 18:29):not that I know of.
dank (Feb 22 2023 at 19:01):I was actually excited about https://github.com/thiagokokada/nix-alien
but it doesn't seem to work on the Roc binary (fails with an exception that originates from ldd's corrupted output)
maybe the roc binary depends on some stuff other than libgcc/glibc (for example who provides __snprintf_chk? one would've guessed glibc, but I have it installed..), I do not know
dank (Feb 23 2023 at 12:09):could be useful to just write up somewhere the total roc dependencies
right now it's kinda confusing at least to me which are roc compiler (as in building roc) dependencies and which are roc binary (dynamic) dependencies
dank (Feb 23 2023 at 12:11):it would also help avoiding issues like the rodio/ alsa dep in the future
Richard Feldman (Feb 23 2023 at 13:39)::thinking: I wonder if we could have CI run ldd on the executable and then if the output isn't exactly what we expect, fail the test - so that you couldn't accidentally introduce a new dynamic dep, you'd have to explicitly change that test
Anton (Feb 24 2023 at 08:24):I've made #5067 for this
Last updated: Jul 26 2025 at 12:14 UTC