Package directive #6342
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Package directive #6342
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pditommaso
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Aug 14, 2025
| The conda provider supports: | ||
| - Package specifications with version constraints | ||
| - Custom channels | ||
| - Environment files (`.yml`, `.yaml`) |
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I'm tempted to get rid of env files with the new directive. Tool requirements should be strictly the ones required by the task, not bloated env files
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Which part of env files do you not like?
- The extra file
- The separation of the packages from the process
People having bloated Nextflow processes is just a part of migrating old scripts to Nextflow. Because their scripts, prior the "business" logic, was mixed with the actual implementation logic, it can be a pain to separate out.
Task batching or grouping would help people organize the logic; sometimes, it's a performance concern, like piping BWA into Samtools.
I personally like the environment.yamls, and I find once you get over three packages(which happens in an R script) and add in the channels, you can't read the conda directive. 😅
So, compromise, what if we made the environment.yml magically picked up like Dockerfiles are with wave? I just want to get rid of the conda "${moduleDir/environment.yml}" line.
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- Introduced PixiConfig and PixiCache classes for managing Pixi environments. - Updated Session class to include PixiConfig retrieval. - Enhanced CmdRun with options to enable/disable Pixi environments. - Modified ConfigBuilder to apply Pixi environment settings based on command-line options. - Updated BashWrapperBuilder to include Pixi activation in the execution script. - Added pixiEnv property to TaskBean and methods in TaskRun for Pixi environment handling. - Updated ProcessConfig to include 'pixi' in process configuration options. This commit integrates Pixi environment management into the Nextflow framework, allowing users to specify and control Pixi environments during execution. Signed-off-by: Edmund Miller <edmund.miller@seqera.io>
- Introduced PixiCacheTest and PixiConfigTest classes to validate Pixi environment functionality. - Added tests for TOML and lock file detection, environment prefix path creation, and command execution handling. - Implemented checks for configuration options and cache directory retrieval in PixiConfig. This commit enhances the test coverage for Pixi environment management, ensuring robust functionality within the Nextflow framework. Signed-off-by: Edmund Miller <edmund.miller@seqera.io>
- Introduced PixiCacheIntegrationTest class to validate PixiCache behavior with various environment specifications. - Implemented tests for creating environments from package specifications, TOML files, and lock files. - Added checks for handling custom cache directories and validating TOML and lock file detection. - Enhanced coverage for existing prefix directory handling and environment variable cache directory usage. This commit strengthens the testing framework for PixiCache, ensuring reliable environment management within the Nextflow ecosystem. Signed-off-by: Edmund Miller <edmund.miller@seqera.io>
- Changed the environment specification from 'python=3.8' to 'cowpy'. - Updated the script to utilize cowpy for output instead of a Python command. This modification enhances the testing of Pixi environments by leveraging cowpy for greeting functionality. Signed-off-by: Edmund Miller <edmund.miller@seqera.io>
Introduces the `nextflow.preview.package` feature flag to enable the unified package management system. This allows users to opt-in to the new `package` directive while maintaining backward compatibility with existing `conda` and `pixi` directives. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com> Signed-off-by: Edmund Miller <edmund.miller@seqera.io>
Creates the foundation for unified package management with: - PackageSpec: Unified specification for packages across providers - PackageProvider: Interface for package manager implementations - PackageManager: Central coordinator for package providers - PackageProviderExtension: Plugin extension point for providers This abstraction layer enables consistent package management across different tools (conda, pixi, mamba, etc.) while supporting both simple and advanced configuration patterns. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com> Signed-off-by: Edmund Miller <edmund.miller@seqera.io>
Extends process configuration to support the unified package directive: - ProcessConfig: Adds 'package' to the list of valid directives - TaskRun: Implements getPackageSpec() method with caching - TaskBean: Adds packageSpec field for task execution Also adds deprecation warnings when conda/pixi directives are used with the preview.package feature enabled, encouraging migration to the new unified syntax. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com> Signed-off-by: Edmund Miller <edmund.miller@seqera.io>
Enhances the bash wrapper system to support the new package directive:
- BashWrapperBuilder: Adds getPackageActivateSnippet() method that
creates package environments using the PackageManager
- command-run.txt: Adds {{package_activate}} template variable
for package environment activation
The new system works alongside existing conda/pixi activation,
enabling gradual migration while maintaining backward compatibility.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
Signed-off-by: Edmund Miller <edmund.miller@seqera.io>
Creates the nf-conda plugin that implements conda support for the unified package management system: - CondaPlugin: Main plugin class - CondaPackageProvider: Implements PackageProvider interface - CondaProviderExtension: Registers the provider with Nextflow - Includes existing CondaCache and CondaConfig implementations This plugin enables conda package management through the new unified 'package' directive while maintaining all existing conda functionality and configuration options. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com> Signed-off-by: Edmund Miller <edmund.miller@seqera.io>
Creates the nf-pixi plugin that implements pixi support for the unified package management system: - PixiPlugin: Main plugin class - PixiPackageProvider: Implements PackageProvider interface - PixiProviderExtension: Registers the provider with Nextflow - Includes existing PixiCache and PixiConfig implementations This plugin enables pixi package management through the new unified 'package' directive, providing fast conda-compatible package resolution with lockfile support. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com> Signed-off-by: Edmund Miller <edmund.miller@seqera.io>
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Integrates the unified package management system with Wave for container building: - Add PackageSpec to Wave PackagesSpec conversion in WaveClient - Support provider mapping (conda/mamba/pixi -> CONDA type in Wave) - Enable package directive processing through Wave container builds - Use HxClient API for HTTP requests (aligned with lib-httpx refactor) - Add comprehensive package management documentation - Remove deprecated Pixi implementation in favor of unified system - Add integration tests for package management workflows This enables the `package` directive to work seamlessly with Wave for building containers with the specified package dependencies. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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PoC of a package directive.
Moved conda into a plugin, and the Pixi code from #6157. Hoping that by making them plugins, we can support things like #1526 in the community, etc.
I also wanted to keep
condafor now(it might throw a deprecation, but it shouldn't yet) and tried to gate it behind a feature flag.