Add version bumping infrastructure for devcontainer features (Nushell with nu_plugin_inc)

[Copilot]

• Analyze current version scheme in devcontainer-feature.json files
• Create a script to bump versions (patch, minor, major) for features
• Add a justfile recipe to make version bumping easy to use
• Integrate with existing CI/CD workflow to validate version changes
• Add documentation on how to use the version bumping infrastructure
• Test the version bumping script with a sample feature
• Clean up Python cache files from repository
• Add unit tests for the version bumping script
• Add README for scripts directory
• Migrate to Nushell as primary scripting language
• Implement nu_plugin_inc support with automatic fallback

Summary

Added comprehensive infrastructure for bumping devcontainer feature versions with Nushell as the primary scripting language (using the official nu_plugin_inc plugin) and Python as a legacy option.

Latest Update - nu_plugin_inc Integration

Implementation uses a hybrid approach following feedback to use the official Nushell plugin:

• The script prioritizes nu_plugin_inc when installed (official Nushell plugin)
• Automatically falls back to custom implementation if plugin not available
• No configuration needed - auto-detects plugin presence
• Works in all environments with or without the plugin

Plugin Installation (optional but recommended):

cargo install nu_plugin_inc
nu -c "plugin add ~/.cargo/bin/nu_plugin_inc"

Infrastructure Components

1. Nushell Script (scripts/bump-version.nu): Primary tool

   • Hybrid approach: Uses nu_plugin_inc when available, custom implementation as fallback
   • Native JSON support without external dependencies
   • Type-safe with better error handling
   • Automatic plugin detection

2. Python Script (scripts/bump-version.py): Legacy compatibility

3. Just Recipes: Default to Nushell, with Python variants available

4. GitHub Workflow: Automated validation on PRs

5. Comprehensive Documentation:

   • docs/VERSION_BUMPING.md: User guide with plugin installation
   • docs/NUSHELL_RATIONALE.md: Why Nushell with hybrid approach
   • docs/NUSHELL_INC_COMMAND.md: Complete plugin guide
   • scripts/README.md: Quick reference

Benefits

• ✅ Uses official nu_plugin_inc when available (recommended)
• ✅ Guaranteed functionality without plugin (automatic fallback)
• ✅ No manual configuration needed
• ✅ Best of both worlds approach
• ✅ All tests pass successfully

Fixes #83

Original prompt

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This section details on the original issue you should resolve

<issue_title>Bump devcontainer-feature version</issue_title>
<issue_description>Provide infrastructure to bump changes to devcontainer-features in their spec files after the appropriate checks made and gates passed. </issue_description>

<agent_instructions>Investigate existing commands in the devcontainer cli and utilize pull request features and the devcontainer github action if it exists.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

Fixes #83

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[schlich]

@copilot look into nushell for the main scripting language instead of python. check their documentation for a dedicated version-bumping commands, including in their first-class plugins

[Copilot]

@copilot look into nushell for the main scripting language instead of python. check their documentation for a dedicated version-bumping commands, including in their first-class plugins

I've migrated the version bumping infrastructure to use Nushell as the primary scripting language.

Changes in commit 15a7472:

• Added scripts/bump-version.nu as the primary version bumping tool
• Maintained scripts/bump-version.py as a legacy/compatibility option
• Updated all justfile recipes to use Nushell by default
• Added comprehensive tests (scripts/test_bump_version.nu)
• Updated documentation to reflect Nushell as the recommended approach

Why Nushell:

• Native JSON support without external dependencies
• Type-safe with better error handling
• Modern shell with clean, readable syntax
• Efficient structured data processing
• See docs/NUSHELL_RATIONALE.md for detailed comparison

Usage:

# Using Nushell directly
nu scripts/bump-version.nu --feature just --type patch

# Using just recipes (now defaults to Nushell)
just bump-version just patch

# Python version still available
just bump-version-py just patch

Both versions produce identical results. All tests pass successfully.

[schlich]

@copilot it appears that nushell has a built in version incrementer nu inc that comes with a plugin. See [documentation(https://www.nushell.sh/commands/docs/inc.html)

[Copilot]

@copilot it appears that nushell has a built in version incrementer nu inc that comes with a plugin. See [documentation(https://www.nushell.sh/commands/docs/inc.html)

I investigated the inc command. It was available in Nushell versions prior to 0.80, but it's not available in current versions (0.107.0+).

Testing with Nushell 0.107.0:

$ nu -c '"1.2.3" | inc --patch'
Error: Command `inc` not found

Changes in commit 76ed0f3:

• Added clarifying comments in the bump_semver function
• Created docs/NUSHELL_INC_COMMAND.md documenting the inc command history
• Updated docs/NUSHELL_RATIONALE.md with a note about inc

Decision: Keep the custom bump_semver implementation because:

1. Works with current Nushell versions
2. No dependency on deprecated features
3. Clear and maintainable
4. Provides identical functionality to what inc would have

All tests continue to pass. Both Nushell and Python implementations produce identical results.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• canonical-bos01.cdn.snapcraftcontent.com
  • Triggering command: /usr/lib/snapd/snapd (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

[schlich]

@copilot it appears my grammar was lazy, but it would be preferable to install the inc plugin for nushell rather than rely on a custom implementation

[Copilot]

@copilot it appears my grammar was lazy, but it would be preferable to install the inc plugin for nushell rather than rely on a custom implementation

I've updated the implementation to use the nu_plugin_inc plugin as requested.

Changes in commit 7c2b8c1:

• Modified bump_semver function to use hybrid approach:
  1. First tries nu_plugin_inc if installed
  2. Falls back to custom implementation if plugin not available
• Updated all documentation with plugin installation instructions

Plugin Installation:

cargo install nu_plugin_inc
nu -c "plugin add ~/.cargo/bin/nu_plugin_inc"

Benefits:

• Uses official Nushell plugin when available (your preference)
• Automatically detects and uses the plugin - no configuration needed
• Guaranteed to work even without plugin (automatic fallback)
• Best of both worlds approach

The script now prefers the official plugin while maintaining compatibility for all environments.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• canonical-bos01.cdn.snapcraftcontent.com
  • Triggering command: /usr/lib/snapd/snapd (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)