From 208801aecb8a8d3dbf56a160659f584844a211d4 Mon Sep 17 00:00:00 2001
From: David Fridrich <49119790+gauron99@users.noreply.github.com>
Date: Wed, 20 Aug 2025 17:08:50 +0200
Subject: [PATCH] fix-of-a-fix (#2994)

---
 pkg/builders/buildpacks/builder.go | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/pkg/builders/buildpacks/builder.go b/pkg/builders/buildpacks/builder.go
index ca47c4648..e703f18de 100644
--- a/pkg/builders/buildpacks/builder.go
+++ b/pkg/builders/buildpacks/builder.go
@@ -217,7 +217,14 @@ func (b *Builder) Build(ctx context.Context, f fn.Function, platforms []fn.Platf
 
 		if f.Runtime == "python" {
 			if fi, _ := os.Lstat(filepath.Join(f.Root, "Procfile")); fi == nil {
-				cli = pyScaffoldInjector{cli, f.Invoke}
+				// HACK (of a hack): need to get the right invocation signature
+				// the standard scaffolding does this in toSignature() func.
+				// we know we have python here.
+				invoke := f.Invoke
+				if invoke == "" {
+					invoke = "http"
+				}
+				cli = pyScaffoldInjector{cli, invoke}
 			}
 		}