Problem

The repository used WORKSPACE-based dependency management, which is legacy. Bazel is moving to Bzlmod (MODULE.bazel) as the modern standard for external dependencies.

Solution

Fully migrated to Bzlmod without WORKSPACE backwards compatibility:

• Created MODULE.bazel (v0.1.0) with:

  • Core dependency: platforms@0.0.11
  • Test dependencies: rules_python@0.40.0 with pip integration
  • Module extensions for tooling and test container repos

• Created minidock/remote_tools/extensions.bzl with two module extensions:

  • minidock_tools - Loads platform-specific binaries (merge, pusher, puller apps)
  • test_repos - Sets up external container repositories for testing

• Removed WORKSPACE support entirely:

  • Deleted all WORKSPACE files (root and test directories)
  • Removed repositories.bzl (old WORKSPACE-style load_tools())
  • Updated repository references: @com_github_bazeltools_rules_minidock → @rules_minidock

• Restructured tests:

  • Tests now run from root directory via //tests/... instead of separate workspaces
  • Consolidated test dependencies into root MODULE.bazel
  • Added manual tags to stub test targets to exclude from wildcard builds
  • Updated scripts/ci_test.py to build from root

• Updated tooling:

  • Modified update_remote_tools.sh to update extensions.bzl instead of repositories.bzl
  • Updated README with Bzlmod setup instructions

Testing

• ✅ Core rules build: ./bazel build //minidock/...
• ✅ Test targets build: ./bazel build //tests/simple_flow/...
• ✅ CI passes: python3 scripts/ci_test.py
• ✅ SHA256 reproducibility verified

Requirements: Bazel 6.0+ with Bzlmod (enabled by default in .bazelrc)