Dioxus

Dioxus is a full-stack Rust app framework for web, desktop, mobile, and more.

Troubleshooting

wasm-bindgen mismatch

A common issue when using the dioxus-cli version from Nixpkgs is encountering the following error:

it looks like the Rust project used to create this Wasm file was linked against
version of wasm-bindgen that uses a different bindgen format than this binary:

  rust Wasm file schema version: 0.2.99
     this binary schema version: 0.2.97

There are two solutions to solving this:

1. Downgrade wasm-bindgen to the version the dioxus-cli expects.
2. Update dioxus-cli to use a newer lock file.

Downgrading wasm-bindgen

Within your Cargo.toml file, force wasm-bindgen to use the expected version.

[dependencies]
wasm-bindgen = "=0.2.97"

Run cargo update, and you should see the version being downgraded.

Downgrading wasm-bindgen v0.2.99 -> v0.2.97 (available: v0.2.99)

You will also want to ensure the version of wasm-bindgen-cli matches, which can be done via looking up the current version from the lock file.

cargoLock = builtins.fromTOML (builtins.readFile ./Cargo.lock);

wasmBindgen = pkgs.lib.findFirst
  (pkg: pkg.name == "wasm-bindgen")
  (throw "Could not find wasm-bindgen package")
  cargoLock.package;

wasm-bindgen-cli = pkgs.wasm-bindgen-cli.override {
  version = wasmBindgen.version;
  hash = pkgs.lib.fakeHash;
  cargoHash = pkgs.lib.fakeHash;
};