refactor: decouple fingerprinting from executor (#1039)

internal/env/env.go

@@ -0,0 +1,31 @@
+package env
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/go-task/task/v3/taskfile"
+)
+
+func Get(t *taskfile.Task) []string {
+	if t.Env == nil {
+		return nil
+	}
+
+	environ := os.Environ()
+
+	for k, v := range t.Env.ToCacheMap() {
+		str, isString := v.(string)
+		if !isString {
+			continue
+		}
+
+		if _, alreadySet := os.LookupEnv(k); alreadySet {
+			continue
+		}
+
+		environ = append(environ, fmt.Sprintf("%s=%s", k, str))
+	}
+
+	return environ
+}