[Apple M1] Cant build Zomes on aarch64-apple-darwin

Technical Discussion Getting Started
#1

Hello everyone,

I am trying to code my first hApp on my Mac mini that has a M1 chip.

I have followed the standard instructions to get started but executing:
CARGO_TARGET_DIR=target cargo build --release --target wasm32-unknown-unknown

Fails with error:

info: syncing channel updates for '1.45.2-aarch64-apple-darwin'
info: latest update on 2020-08-03, rust version 1.45.2 (d3fb005a3 2020-07-31)
error: target 'aarch64-apple-darwin' not found in channel.  Perhaps check https://doc.rust-lang.org/nightly/rustc/platform-support.html for available targets
error: backtrace:
error:    0: backtrace::capture::Backtrace::new_unresolved
   1: error_chain::backtrace::imp::InternalBacktrace::new
   2: rustup::dist::manifest::Manifest::get_profile_components
   3: rustup::dist::dist::try_update_from_dist_
   4: rustup::install::InstallMethod::install
   5: rustup::toolchain::DistributableToolchain::install_from_dist
   6: rustup::config::Cfg::find_or_install_override_toolchain_or_default
   7: rustup_init::main
   8: std::sys_common::backtrace::__rust_begin_short_backtrace
   9: _main

I guess this is due to the lack of support of the architecture with that particular version of rust. Do you know if there is anything I can do to get going?

Thank you!

#2

Hi,

It mentions here Rust 1.49 in relation to bringing support for M1, I’m wondering if it might work for you to upgrade to that version of Rust.

#3

Thank you for your reply!!

Would you know how to do this upgrade in nix shell?

Thank you again!

1 Like
#4

Should be like…

rustup toolchain install 1.49.0

within the nix-shell

#5

Thank you for your answer!

The command works, it does install 1.49.0 but when I go back to doing

CARGO_TARGET_DIR=target cargo build --release --target wasm32-unknown-unknown

It is still 1.45 which is called.

Same when I just launch rustc, it goes back to 1.45.

That’s why I wonder if this should not be changed in default.nix before running nix-shell?

Would you have any idea?

Thank you again for taking the time!

#6

No problem.

Just use

rustup default 1.49

And you’ll actually switch to it. Till then it’s installed but not specified.

#7

Hi thank you!

This is what I did but rustc is still in 1.45.2 even after I run rustup default 1.49 :frowning:

#8

For some reason, it now works although I did not touch it in a week… Mystery.

#9

That is weird! But good!