From 83033e2d0a68340c4330550a658b7d1bcf935681 Mon Sep 17 00:00:00 2001
From: Juan Ignacio Rios <juani.rios.99@gmail.com>
Date: Tue, 17 Mar 2026 14:02:12 -0300
Subject: [PATCH] fix: move cdylib to separate float-wasm crate

The `cdylib` crate-type on `rain-math-float` causes Cargo to produce
output artifacts with colliding filenames (rlib and cdylib both generate
`librain_math_float.*`). On Linux, this results in `alloy_primitives`
being compiled as two separate crate instances, causing type mismatches
for any downstream crate that imports both `alloy_primitives` and
`rain_math_float`:

    expected `FixedBytes<32>`, found a different `FixedBytes<32>`
    note: two different versions of crate `alloy_primitives` are being used

See: https://github.com/rust-lang/cargo/issues/6313

The fix moves `cdylib` to a dedicated `rain-math-float-wasm` wrapper
crate (`crates/float-wasm`), keeping the core library as `rlib`-only.
WASM consumers should depend on `rain-math-float-wasm` instead. Native
consumers are unaffected.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 crates/float-wasm/Cargo.toml | 12 ++++++++++++
 crates/float-wasm/src/lib.rs |  8 ++++++++
 crates/float/Cargo.toml      |  2 +-
 3 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 crates/float-wasm/Cargo.toml
 create mode 100644 crates/float-wasm/src/lib.rs

diff --git a/crates/float-wasm/Cargo.toml b/crates/float-wasm/Cargo.toml
new file mode 100644
index 0000000..0cd5dec
--- /dev/null
+++ b/crates/float-wasm/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "rain-math-float-wasm"
+version = "0.1.0"
+edition = "2021"
+license = "LicenseRef-DCL-1.0"
+homepage = "https://github.com/rainlanguage/rain.math.float"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+rain-math-float = { path = "../float" }
diff --git a/crates/float-wasm/src/lib.rs b/crates/float-wasm/src/lib.rs
new file mode 100644
index 0000000..0b62700
--- /dev/null
+++ b/crates/float-wasm/src/lib.rs
@@ -0,0 +1,8 @@
+//! WASM cdylib wrapper for `rain-math-float`.
+//!
+//! This crate exists solely to produce the cdylib artifact for WASM targets.
+//! The core library (`rain-math-float`) is rlib-only to avoid output filename
+//! collisions that cause duplicate dependency compilation in downstream
+//! consumers.
+
+pub use rain_math_float::*;
diff --git a/crates/float/Cargo.toml b/crates/float/Cargo.toml
index 8294076..02c178a 100644
--- a/crates/float/Cargo.toml
+++ b/crates/float/Cargo.toml
@@ -6,7 +6,7 @@ license = "LicenseRef-DCL-1.0"
 homepage = "https://github.com/rainlanguage/rain.math.float"
 
 [lib]
-crate-type = ["rlib", "cdylib"]
+crate-type = ["rlib"]
 
 [dependencies]
 alloy = { version = "1.0.9", features = ["sol-types", "json-rpc"] }