Use goreleaser version if available, otherwise buildinfo

version.go

@@ -0,0 +1,41 @@
+package main
+
+import (
+	"runtime/debug"
+	"time"
+)
+
+var (
+	version = "unknown"
+	commit  = "unknown"
+	date    = "unknown"
+	dirty   = false
+)
+
+func init() {
+	// if not set by goreleaser, use buildinfo instead
+	if version == "unknown" {
+		info, ok := debug.ReadBuildInfo()
+		if !ok {
+			return
+		}
+		if info.Main.Version != "" {
+			version = info.Main.Version
+		}
+
+		for _, kv := range info.Settings {
+			if kv.Value == "" {
+				continue
+			}
+			switch kv.Key {
+			case "vcs.revision":
+				commit = kv.Value
+			case "vcs.time":
+				d, _ := time.Parse(time.RFC3339, kv.Value)
+				date = d.String()
+			case "vcs.modified":
+				dirty = kv.Value == "true"
+			}
+		}
+	}
+}