Divide project into library and binary parts, round 2

Cargo.toml

@@ -1,20 +1,30 @@
 [workspace]
 members = [
+	"crates/rustc_codegen_spirv-cache",
+	"crates/cargo-gpu-build",
 	"crates/cargo-gpu",
 	"crates/xtask",
 ]
 
 exclude = [
 	# This currently needs to be excluded because it depends on a version of `rust-gpu` that
 	# uses a toolchain whose Cargo version doesn't recognise version 4 of `Cargo.lock`.
-	"crates/shader-crate-template"
+	"crates/shader-crate-template",
 ]
 
 resolver = "2"
 
+[workspace.package]
+version = "0.1.0"
+edition = "2021"
+repository = "https://github.com/Rust-GPU/cargo-gpu"
+keywords = ["gpu", "compiler", "rust-gpu"]
+license = "MIT OR Apache-2.0"
+
 [workspace.dependencies]
-spirv-builder = { git = "https://github.com/Rust-GPU/rust-gpu", rev = "3df836eb9d7b01344f52737bf9a310d1fb5a0c26", default-features = false }
+spirv-builder = { git = "https://github.com/Rust-GPU/rust-gpu", rev = "13a80b7ed9fbd5738746ef31ab8ddfee3f403551", default-features = false }
 anyhow = "1.0.98"
+thiserror = "2.0.12"
 clap = { version = "4.5.41", features = ["derive"] }
 crossterm = "0.29.0"
 directories = "6.0.0"
@@ -28,7 +38,6 @@ tempfile = "3.22"
 test-log = "0.2.18"
 cargo_metadata = "0.21.0"
 cargo-util-schemas = "0.8.2"
-semver = "1.0.26"
 dunce = "1.0.5"
 
 # This crate MUST NEVER be upgraded, we need this particular "first" version to support old rust-gpu builds

crates/cargo-gpu-build/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "cargo-gpu-build"
+description = "Builder of `rust-gpu` shader crates"
+version.workspace = true
+edition.workspace = true
+repository.workspace = true
+keywords.workspace = true
+license.workspace = true
+
+[dependencies]
+rustc_codegen_spirv-cache = { path = "../rustc_codegen_spirv-cache" }
+dunce.workspace = true
+thiserror.workspace = true
+log.workspace = true
+
+[features]
+# Rebuilds target shader crate upon changes
+watch = ["rustc_codegen_spirv-cache/watch"]
+# Enables `clap` support for public structs
+clap = ["rustc_codegen_spirv-cache/clap"]
+
+[lints]
+workspace = true