wit: sort packages in topological order when rendering WIT

CHANGELOG.md

@@ -15,6 +15,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 
 - Method `wit.(*Package).WIT()` now interprets the non-empty string `name` argument as signal to render in single-file, multi-package braced form.
 - `wit.(*Resolve).WIT()` and `wit.(*Package).WIT()` now accept a `*wit.World` as context to filter serialized WIT to a specific world.
+- Packages are now sorted topologically by dependency in generated WIT files. For example, `wasi:cli` would be followed by its dependencies like `wasi:io`, `wasi:filesystem`, or `wasi:random`.
 
 ## [v0.2.4] — 2024-10-06
 
@@ -165,7 +166,7 @@ Initial version, supporting [TinyGo](https://tinygo.org/) + [WASI](https://wasi.
 - Support for mainline [Go](https://go.dev/).
 
 [Unreleased]: <https://github.com/bytecodealliance/wasm-tools-go/compare/v0.2.4..HEAD>
-[v0.2.3]: <https://github.com/bytecodealliance/wasm-tools-go/compare/v0.2.3..v0.2.4>
+[v0.2.4]: <https://github.com/bytecodealliance/wasm-tools-go/compare/v0.2.3..v0.2.4>
 [v0.2.3]: <https://github.com/bytecodealliance/wasm-tools-go/compare/v0.2.2..v0.2.3>
 [v0.2.2]: <https://github.com/bytecodealliance/wasm-tools-go/compare/v0.2.1..v0.2.2>
 [v0.2.1]: <https://github.com/bytecodealliance/wasm-tools-go/compare/v0.2.0...v0.2.1>

cmd/wit-bindgen-go/main.go

@@ -58,7 +58,7 @@ func main() {
 
 	err := cmd.Run(context.Background(), os.Args)
 	if err != nil {
-		fmt.Printf("error: %v\n", err)
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
 		os.Exit(1)
 	}
 }

internal/witcli/witcli.go

@@ -26,7 +26,7 @@ func LoadWIT(ctx context.Context, forceWIT bool, path string) (*wit.Resolve, err
 			return wit.ParseWIT(bytes)
 		}
 	}
-	if forceWIT || !strings.HasSuffix(path, ".json") {
+	if forceWIT || (path != "" && path != "-" && !strings.HasSuffix(path, ".json")) {
 		return wit.LoadWIT(path)
 	}
 	return wit.LoadJSON(path)