Use manual bindings for WASIp2/3

.github/workflows/tests.yml

@@ -391,11 +391,6 @@ jobs:
           wget -O - $URL | tar -xJ --strip-components=1 -C ~/.cargo/bin
           wasmtime --version
       - uses: Swatinem/rust-cache@v2
-      # TODO(MSRV-1.87): Remove this step.
-      - name: Generate MSRV-compatible Cargo.lock
-        env:
-          CARGO_RESOLVER_INCOMPATIBLE_RUST_VERSIONS: "fallback"
-        run: cargo update -p wasip2
       - run: cargo test --target wasm32-wasip2
 
   # TODO: enable after pre-built std will be provided by Rust 

CHANGELOG.md

@@ -6,10 +6,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-- Restore MSRV to 1.85 for wasm32-wasip3 targets. [#824]
+### Changed
+- Drop `wasip2` and `wasip3` dependencies in favor of manual bindings [#830]
 
 [Unreleased]: https://github.com/rust-random/getrandom/compare/v0.4.2...master
-[#824]: https://github.com/rust-random/getrandom/pull/824
+[#830]: https://github.com/rust-random/getrandom/pull/830
 
 ## [0.4.2] - 2026-03-03
 

Cargo.toml

@@ -76,15 +76,6 @@ libc = { version = "0.2.154", default-features = false }
 [target.'cfg(target_os = "vxworks")'.dependencies]
 libc = { version = "0.2.154", default-features = false }
 
-# wasi_p2_3
-[target.'cfg(all(target_arch = "wasm32", target_os = "wasi", target_env = "p2"))'.dependencies]
-wasip2 = { version = "1", default-features = false }
-
-# wasi_p2_3
-[target.'cfg(all(target_arch = "wasm32", target_os = "wasi", target_env = "p3"))'.dependencies]
-# TODO: remove 0.3 after MSRV bumped to 1.87+.
-wasip3 = ">=0.3, <=0.4"
-
 # wasm_js
 [target.'cfg(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "none")))'.dependencies]
 wasm-bindgen = { version = "0.2.98", default-features = false, optional = true }