adeelahmad · Oct 19, 2026 · Oct 19, 2026
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
@@ -77,7 +77,7 @@ jobs:
             out="dist/$target"
             mkdir -p "$out"
             CGO_ENABLED=0 GOOS=linux GOARCH="$goarch" GOARM="$goarm" \
-              go build -trimpath -ldflags "-s -w -X main.version=$VERSION" -o "$out/gadgetcast" ./cmd/gadgetcast
+              go build -trimpath -ldflags "-s -w -X github.com/adeelahmad/gadgetcast/internal/server.Version=${VERSION#v}" -o "$out/gadgetcast" ./cmd/gadgetcast
             cp install.sh "$out/"
             tar -czf "dist/gadgetcast_linux_$target.tar.gz" -C "$out" gadgetcast install.sh
           done

diff --git a/cmd/gadgetcast/version_test.go b/cmd/gadgetcast/version_test.go
@@ -0,0 +1,29 @@
+package main
+
+import (
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+// releaseLdflag is the -X flag release.yml stamps the tag with; keep the two in step.
+const releaseLdflag = "-X github.com/adeelahmad/gadgetcast/internal/server.Version="
+
+// The v0.1.1 release binary reported 0.1.0: the stamp named a symbol that did
+// not exist, which the linker ignores. Build the way the release does and check
+// the binary reports the stamped version.
+func TestReleaseStampSetsVersion(t *testing.T) {
+	bin := filepath.Join(t.TempDir(), "gadgetcast")
+	build := exec.Command("go", "build", "-ldflags", releaseLdflag+"9.8.7-test", "-o", bin, ".")
+	if out, err := build.CombinedOutput(); err != nil {
+		t.Fatalf("go build: %v\n%s", err, out)
+	}
+	out, err := exec.Command(bin, "-version").Output()
+	if err != nil {
+		t.Fatalf("-version: %v", err)
+	}
+	if got := strings.TrimSpace(string(out)); got != "9.8.7-test" {
+		t.Fatalf("-version = %q, want the stamped 9.8.7-test", got)
+	}
+}
diff --git a/docs/api.md b/docs/api.md
@@ -8,7 +8,7 @@ to its bundled mock data and shows an "offline / demo" badge.
 
 | Method | Path | Body / Response |
 | --- | --- | --- |
-| GET | `/api/health` | `{"ok":true,"version":"0.1.0"}` |
+| GET | `/api/health` | `{"ok":true,"version":"0.1.1"}` (the release tag without its "v"; `0.0.0-dev` in unstamped builds) |
 | GET | `/api/nodes` | `NodeGroup[]` — the node catalogue |
 | GET | `/api/pipelines` | `Pipeline[]` |
 | GET | `/api/pipelines/{id}` | `Pipeline` or 404 |

diff --git a/internal/server/server_test.go b/internal/server/server_test.go
@@ -161,7 +161,7 @@ func TestHealth(t *testing.T) {
 	resp, body := e.do(t, "GET", "/api/health", nil)
 	wantStatus(t, resp, body, 200)
 	got := decode[map[string]any](t, body)
-	if got["ok"] != true || got["version"] != "0.1.0" {
+	if got["ok"] != true || got["version"] != Version {
 		t.Fatalf("health = %s", body)
 	}
 }

diff --git a/internal/server/static.go b/internal/server/static.go
@@ -7,12 +7,14 @@ import (
 	"strings"
 )
 
-const noUINotice = `GadgetCast server ` + Version + `
+func noUINotice() string {
+	return `GadgetCast server ` + Version + `
 
 The Studio UI has not been built into this binary (web/dist/index.html is missing).
 Build the UI into web/dist and rebuild the server, or run the UI dev server
 against this API. The API is available under /api/ and signaling at /ws.
 `
+}
 
 // staticHandler serves the embedded SPA: real files as-is, any other path
 // falls back to index.html so client-side routes work on reload.
@@ -37,7 +39,7 @@ func (s *Server) staticHandler() http.Handler {
 		}
 		if index == nil {
 			w.Header().Set("Content-Type", "text/plain; charset=utf-8")
-			_, _ = w.Write([]byte(noUINotice))
+			_, _ = w.Write([]byte(noUINotice()))
 			return
 		}
 		w.Header().Set("Content-Type", "text/html; charset=utf-8")

diff --git a/internal/server/types.go b/internal/server/types.go
@@ -5,8 +5,9 @@ import (
 	"regexp"
 )
 
-// Version is the server version reported by /api/health.
-const Version = "0.1.0"
+// Version is the server version reported by /api/health, without the leading
+// "v". Release builds stamp it with -ldflags "-X <this package>.Version=1.2.3".
+var Version = "0.0.0-dev"
 
 // idPattern is the contract's id rule for path segments (docs/api.md).
 var idPattern = regexp.MustCompile(`^[a-zA-Z0-9_-]{1,64}$`)