Stream: beginners

Topic: Fresh build fails on NixOS

dank (Jan 25 2023 at 09:00):

Hello everyone! For the first time, I tried to build the compiler. I cloned the repository, ran nix develop, then cargo run help.
The cargo build seems to fail with

error[E0432]: unresolved import `crate::expr::AccessorData`
  --> crates/compiler/can/src/def.rs:14:5
   |
14 | use crate::expr::AccessorData;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ no `AccessorData` in `expr`

error[E0425]: cannot find function, tuple struct or tuple variant `Accessor` in this scope
    --> crates/compiler/can/src/def.rs:2324:25
     |
2324 |                         Accessor(AccessorData {
     |                         ^^^^^^^^ not found in this scope

   Compiling target-lexicon v0.12.4
   Compiling strum_macros v0.24.3
   Compiling crossbeam-epoch v0.9.9
Some errors have detailed explanations: E0425, E0432.
For more information about an error, try `rustc --explain E0425`.
error: could not compile `roc_can` due to 2 previous errors
warning: build failed, waiting for other jobs to finish...

Anton (Jan 25 2023 at 09:04):

Hi @dank, there's a build failure on main because we have not found a good merge queue solution yet, it should be resolved soon.
In the meantime you can check out the branch fix-record-accessor which contains the fix.

dank (Jan 25 2023 at 09:12):

Anton said:

Hi dank, there's a build failure on main because we have not found a good merge queue solution yet, it should be resolved soon.
In the meantime you can check out the branch fix-record-accessor which contains the fix.

thank you! Now that I've checked out the fix-record-accessor branch, build fails with a different error;

error: linking with `cc` failed: exit status: 1
  |
...
  = note: Terminated
          collect2: error: ld returned 143 exit status


error: could not compile `roc_cli` due to previous error

perhaps you can help me with this error aswell?
thanks for the reply!

Anton (Jan 25 2023 at 10:34):

Hmm, I can't reproduce this error and I'm on NixOS as well. I assume this second error was thrown when using the command cargo run help?

dank (Jan 25 2023 at 10:44):

Anton said:

Hmm, I can't reproduce this error and I'm on NixOS as well. I assume this second error was thrown when using the command cargo run help?

yes

Anton (Jan 25 2023 at 10:45):

Are you on NixOS 22.11?

dank (Jan 25 2023 at 10:46):

22.11.1705.b83e7f5a04a (Raccoon)

Anton (Jan 25 2023 at 10:47):

Quite the mystery :p can you do cargo clean followed by cargo build --release?

Anton (Jan 25 2023 at 10:59):

Can you share the output of the lscpu command?

dank (Jan 25 2023 at 11:04):

Anton said:

Quite the mystery :p can you do cargo clean followed by cargo build --release?

wow that actually worked

dank (Jan 25 2023 at 11:06):

Anton said:

Can you share the output of the lscpu command?

if you wanna see anyway it's here https://termbin.com/e14x

Anton (Jan 25 2023 at 11:06):

Great :) does cargo run help work as well now?

dank (Jan 25 2023 at 11:07):

let me see.. (slow computer)

dank (Jan 25 2023 at 11:11):

yes that works aswell

dank (Jan 25 2023 at 11:12):

weird that issue's just gone lol

dank (Jan 25 2023 at 11:12):

but thanks a lot!!

Anton (Jan 25 2023 at 11:14):

Happy to help :)

dank (Jan 25 2023 at 22:15):

Anton said:

Happy to help :)

Hey Anton, this is half related but- I want to start contributing to Roc . so now to PR it means I would need to checkout fix-record-accessor and then you guys cherry pick my commit from the new branch? like what's the workflow now with main being broken?

Folkert de Vries (Jan 25 2023 at 22:18):

main is fixed again

Folkert de Vries (Jan 25 2023 at 22:19):

so if you use latest main, you should be good

dank (Jan 25 2023 at 22:20):

Folkert de Vries said:

so if you use latest main, you should be good

ahh great. thanks

Anton (Jan 26 2023 at 08:34):

Hey Anton, this is half related but- I want to start contributing to Roc .

@dank awesome :) feel free to post something to #contributing if you need help!

Last updated: Jul 26 2025 at 12:14 UTC