First working version

.gitignore

@@ -12,3 +12,5 @@
 
 # Project-local glide cache, RE: https://github.com/Masterminds/glide/issues/736
 .glide/
+
+task

task.go

@@ -1 +1,63 @@
-package task
+package main
+
+import (
+	"io/ioutil"
+	"log"
+	"os"
+	"os/exec"
+	"path/filepath"
+
+	"github.com/kardianos/osext"
+	"gopkg.in/yaml.v2"
+)
+
+var (
+	CurrentDirectory, _ = osext.ExecutableFolder()
+	TaskFilePath        = filepath.Join(CurrentDirectory, "Taskfile.yml")
+)
+
+type Task struct {
+	Cmds      []string
+	Deps      []string
+	Source    string
+	Generates string
+}
+
+func main() {
+	log.SetFlags(0)
+
+	args := os.Args[1:]
+	if len(args) == 0 {
+		log.Fatal("No argument given")
+	}
+
+	file, err := ioutil.ReadFile(TaskFilePath)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	tasks := make(map[string]*Task)
+	if err = yaml.Unmarshal(file, &tasks); err != nil {
+		log.Fatal(err)
+	}
+
+	task, ok := tasks[args[0]]
+	if !ok {
+		log.Fatalf(`Task "%s" not found`, args[0])
+	}
+
+	if err = RunTask(task); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func RunTask(t *Task) error {
+	for _, c := range t.Cmds {
+		cmd := exec.Command("/bin/sh", "-c", c)
+		cmd.Stdout = os.Stdout
+		if err := cmd.Run(); err != nil {
+			return err
+		}
+	}
+	return nil
+}