Automatically install rust toolchain for CI

.gitea/workflows/ci.yml

@@ -1,6 +1,7 @@
 name: "CI"
 on:
   push:
+  pull_request:
   workflow_dispatch:
 
 jobs:
@@ -31,4 +32,4 @@ jobs:
       - uses: actions/checkout@v6
       - uses: actions-rust-lang/setup-rust-toolchain@v1
       - run: cargo install --git https://github.com/rust-gpu/rust-gpu cargo-gpu
-      - run: cargo gpu check --auto-install-rust-toolchain -p enkou-shaders
+      - run: cargo gpu check -p enkou-shaders

enkou-shaders-tests/build.rs

@@ -9,9 +9,11 @@ pub fn main() -> anyhow::Result<()> {
         .copied()
         .collect::<PathBuf>();
 
-    let install = Install::from_shader_crate(crate_path.clone())
-        .within_build_script()
-        .run()?;
+    let mut install = Install::from_shader_crate(crate_path.clone());
+    install.build_script = true;
+    install.auto_install_rust_toolchain = true;
+    let install = install.run()?;
+
     let mut builder = install.to_spirv_builder(crate_path, "spirv-unknown-vulkan1.3");
     builder.build_script.defaults = true;
     builder.shader_panic_strategy = ShaderPanicStrategy::SilentExit;