[SOLVED] Rust E0463 building Dioxus Fullstack but wasm32-unknown-unknown Target is Installed

Rust E0463 building Dioxus Fullstack but wasm32-unknown-unknown Target is Installed

Running dx build --features web --release or cargo build --target wasm32-unknown-unknown returns the following error:

[INFO] 🚅 Running build command...
error: Broken pipe (os error 32)
Error: 🚫 Building project failed: error[E0463]: can't find crate for `std`
  |
  = note: the `wasm32-unknown-unknown` target may not be installed
  = help: consider downloading the target with `rustup target add wasm32-unknown-unknown`

However, when I run rustup target add wasm32-unknown-unknown, it prints

info: component 'rust-std' for target 'wasm32-unknown-unknown' is up to date

The target appears to be installed when I run rustup show:

Default host: aarch64-apple-darwin
rustup home:  /Users/myhomedir/.rustup

installed targets for active toolchain
--------------------------------------

aarch64-apple-darwin
wasm32-unknown-unknown

active toolchain
----------------

stable-aarch64-apple-darwin (default)
rustc 1.76.0 (07dca489a 2024-02-04)

I don't understand why the std lib isn't compiled for this target.

Solution

Turns out Rust was installed via both homebrew and rustup. Removing the homebrew installation fixed this. Credit to this answer: https://stackoverflow.com/a/74549777/22985331