feat: add version flag with ldflags injection and git fallback

Author: klaidliadon

.goreleaser.yml

@@ -11,7 +11,7 @@ builds:
       - amd64
       - arm64
     ldflags:
-      - -s -w
+      - -s -w -X github.com/warriorscode/deck.Version={{ .Version }}
 
 archives:
   - formats:

Makefile

@@ -1,6 +1,6 @@
 ## Build binary
 build:
-	go build -o bin/deck ./cmd/deck
+	go build -ldflags="-s -w -X github.com/warriorscode/deck.Version=$$(git describe --tags)" -o bin/deck ./cmd/deck
 
 ## Run tests
 test:

cmd/deck/main.go

@@ -12,6 +12,7 @@ import (
 
 	"github.com/spf13/cobra"
 
+	deck "github.com/warriorscode/deck"
 	"github.com/warriorscode/deck/config"
 	"github.com/warriorscode/deck/engine"
 	"github.com/warriorscode/deck/status"
@@ -21,8 +22,9 @@ var configFile string
 
 func main() {
 	root := &cobra.Command{
-		Use:   "deck",
-		Short: "Lightweight local dev orchestrator",
+		Use:     "deck",
+		Short:   "Lightweight local dev orchestrator",
+		Version: deck.Version,
 	}
 
 	root.PersistentFlags().StringVarP(&configFile, "file", "f", "deck.yaml", "config file path")

version.go

@@ -0,0 +1,21 @@
+package deck
+
+import (
+	"os/exec"
+	"strings"
+)
+
+// Version is injected at build time via ldflags:
+//
+//	go build -ldflags="-s -w -X github.com/warriorscode/deck.Version=$(git describe --tags)" ./cmd/deck
+var Version = ""
+
+func init() {
+	if Version == "" {
+		if out, _ := exec.Command("git", "describe", "--tags").Output(); len(out) > 0 {
+			Version = strings.TrimSpace(string(out))
+		} else {
+			Version = "dev"
+		}
+	}
+}