SDK 0.3.5.1 Bug - "missing field ui" Error When Building Packages [SOLVED: Add ui: false]

Services Support
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Hi Start9 Community,

I’ve spent 50+ hours trying to package a working Electrs-SSL service for StartOS and discovered a critical bug in SDK 0.3.5.1 that blocks all package development.

The Problem

When running start-sdk pack with any valid manifest, the SDK throws:

Deserialization Error: missing field `ui`

This field doesn’t exist in the official Start9 manifest specification.

The Solution

Add ui: false as a top-level field in your manifest.yaml:

yaml

id: your-package-id
version: 0.1.0
title: Your Package Title
ui: false  # <-- This fixes the SDK error
release-notes: Your release notes
license: MIT
# ... rest of manifest

What I Tried

  1. SDK 0.3.5.1 - Requires the undocumented ui: false field
  2. SDK 0.3.4.2 - Won’t build due to missing dependencies (emver package)
  3. Manual packaging - Creates correct tar structure but wrong binary format
  4. Pre-built SDK binaries - Don’t exist (404 errors)

My Working Service

I’ve successfully built a production-ready Electrs server with SSL/TLS support via stunnel. The Docker image works perfectly, providing secure Electrum connections on port 50002. The only barrier is the SDK packaging bug.

Questions for the Community

  1. Has anyone successfully built packages with SDK 0.3.5.1?
  2. Is there a working SDK binary available somewhere?
  3. Can Start9 team build packages on their infrastructure for community developers?

Full Technical Details

Working Dockerfile:

dockerfile

FROM getumbrel/electrs:v0.9.10 AS electrs-base
FROM debian:bullseye

COPY --from=electrs-base /bin/electrs /usr/local/bin/electrs

RUN apt-get update && \
    apt-get install -y stunnel4 openssl && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

RUN mkdir -p /etc/stunnel /var/run/stunnel /data

COPY docker_entrypoint.sh /usr/local/bin/
RUN chmod +x /usr/local/bin/docker_entrypoint.sh

EXPOSE 50001 50002
ENTRYPOINT ["/usr/local/bin/docker_entrypoint.sh"]

The service is ready for the community but blocked by this SDK issue. Any help or insights would be greatly appreciated!

Tags: #sdk Development #packaging #bug #electrs

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