feat: Update CheckVersion to accept a libDir in case of non-std install

examples/protobuf-message/protobuf_provider_test.go

@@ -26,7 +26,7 @@ func TestPluginMessageProvider(t *testing.T) {
 	err := pactlog.SetLogLevel("TRACE")
 	assert.NoError(t, err)
 
-	pactversion.CheckVersion()
+	pactversion.CheckVersion("/tmp")
 
 	verifier := provider.NewVerifier()
 

internal/checker/checker.go

@@ -5,14 +5,16 @@ import (
 	"github.com/pact-foundation/pact-go/v2/internal/native"
 )
 
-func CheckInstall() error {
+func CheckInstall(libDir string) error {
 	// initialised the lib registry. It just needs one of the main lib interfaces Version() here
 	installer.LibRegistry[installer.FFIPackage] = &native.MockServer{}
 
 	i, err := installer.NewInstaller()
 	if err != nil {
 		return err
 	}
-
+	if libDir != "" {
+		i.SetLibDir(libDir)
+	}
 	return i.CheckInstallation()
 }

version/version.go

@@ -9,8 +9,8 @@ import (
 // CheckVersion checks if the currently installed version is within semver range
 // and will attempt to download the files to the default or configured directory if
 // incorrect
-func CheckVersion() {
-	if err := checker.CheckInstall(); err != nil {
+func CheckVersion(libDir string) {
+	if err := checker.CheckInstall(libDir); err != nil {
 		log.Fatal("check version failed:", err)
 	}