Hrishikesh Dharam (Dec 03 2024 at 16:59): Hrishikesh Dharam (Dec 03 2024 at 16:59):I was picking up a stale PR and started getting this failure when trying to build the compiler
Compiling roc_bitcode_bc v0.0.1 (/Users/hdharam/Documents/dev/roc/crates/compiler/builtins/bitcode/bc)
error: failed to run custom build command for `roc_bitcode v0.0.1 (/Users/hdharam/Documents/dev/roc/crates/compiler/builtins/bitcode)`
Caused by:
process didn't exit successfully: `/Users/hdharam/Documents/dev/roc/target/debug/build/roc_bitcode-e1214b17feff2496/build-script-build` (exit status: 1)
--- stdout
cargo:rerun-if-changed=build.rs
Compiling zig object `object` to: /Users/hdharam/Documents/dev/roc/crates/compiler/builtins/bitcode/zig-out/builtins-host.o
--- stderr
An internal compiler expectation was broken.
This is definitely a compiler bug.
Please file an issue here: <https://github.com/roc-lang/roc/issues/new/choose>
zig build object -Drelease=true failed with:
error: Unexpected
Location: crates/compiler/builtins/bitcode/build.rs:188:21
this is after running cargo clean and nix develop. I saw that other folks ran into similar issues while doing manual installs with an incorrect zig version, but I confirmed my zig version in the nix shell is correct.
$ which zig
/nix/store/xvw8ikyvk7jn2f3vj6xd9n1yxpgvk02r-zig-0.11.0/bin/zig
Can you execute git clean -X -d -f and try again?
Hrishikesh Dharam (Dec 03 2024 at 17:17):that worked, thanks! just curious, do you have a guess why?
Notification Bot (Dec 03 2024 at 17:17):Hrishikesh Dharam has marked this topic as resolved.
Anton (Dec 03 2024 at 17:19):Your previous compilation outside of nix could have done weird stuff and cargo clean does not remove all files
Last updated: Jul 26 2025 at 12:14 UTC