Pacsomatic

pacsomatic

Overview

This skill provides a reproducible execution workflow for nf-core/pacsomatic, centered on a single helper entrypoint that handles validation, artifact generation, and optional execution.

Primary entrypoint:

• scripts/run_pacsomatic.py

The helper script:

• validates required identifiers, files, reference mode, and runtime prerequisites
• writes a pacsomatic-compatible samplesheet (patient,sample,status,bam,pbi)
• generates a params YAML and launch script for reproducible reruns
• supports dry-run validation and run/submit execution paths

Use this skill as the default path for pacsomatic operations. Do not bypass it with manually assembled nextflow run nf-core/pacsomatic commands unless the user explicitly asks for manual command construction.

When to Use This Skill

Invoke this skill when the user asks to:

• run matched tumor-normal analysis from BAM files
• generate or fix pacsomatic samplesheet and launch artifacts
• execute locally or submit to schedulers (LSF/Slurm/PBS/SGE)
• perform dry-run validation before execution
• troubleshoot launch failures or summarize run outputs

Do not use this skill for:

• deep biological interpretation beyond run-level sanity checks
• editing pipeline internals unless explicitly requested

Typical trigger phrases:

• "run nf-core/pacsomatic for this tumor-normal pair"
• "prepare pacsomatic samplesheet and launch script"
• "do a dry run first and tell me what is missing"
• "submit pacsomatic to slurm/lsf and return the job id"
• "why did pacsomatic submission fail"

Routing and Execution Rules

1. Always collect required run inputs first.
2. Always route through scripts/run_pacsomatic.py for validation and artifact generation.
3. Default to --dry-run when the user asks for checks/validation only.
4. Use --run only when the user asks to execute/submit.
5. For scheduler modes, include executor-specific resource arguments and return detected job ID when available.
6. If execution fails, report first failure point and next triage target (.nextflow.log, pipeline_info, failing task logs).

Inputs Required

Required:

• tumor BAM path
• normal BAM path
• patient ID
• tumor sample ID
• normal sample ID
• output directory
• exactly one reference mode: --fasta or --genome
• pipeline revision (--pipeline-version, passed to Nextflow as -r)

Optional:

• profile, resources, scheduler account/queue
• params file, resume/report/dag flags
• --dry-run and/or --run

Upstream revision. nf-core/pacsomatic has no tagged release. Its default branch main is still the nf-core template: assets/schema_input.json there requires sample,fastq_1,fastq_2, so it rejects the BAM samplesheet this skill writes. The matched tumor-normal BAM schema (patient,sample,status,bam,pbi) lives on dev. run_pacsomatic.py therefore refuses to build a command without --pipeline-version. dev is a moving branch — pass a commit SHA from it when a run must be reproducible, and read assets/schema_input.json at that revision before launching.

Workflow

1. Validate identity and input constraints.
2. Validate required local paths (BAM, optional PBI, optional FASTA).
3. Resolve runtime and dependency checks.
4. Build samplesheet and generated params YAML.
5. Generate launch script for selected executor.
6. If --dry-run and not --run, stop after artifact generation.
7. If --run, execute locally or submit to scheduler.
8. Return command/script path, validation status, and job ID (if detected).

Agent Response Contract

Every response after invocation should include:

• exact command used or generated script path
• confirmation that validation checks ran
• run type (dry-run vs run)
• scheduler job ID when available
• one concrete next step for validation/triage

Quick Start

Dry run:

python scripts/run_pacsomatic.py \
  --tumor-bam /path/to/tumor.bam \
  --normal-bam /path/to/normal.bam \
  --patient-id P001 \
  --tumor-sample-id P001_T \
  --normal-sample-id P001_N \
  --outdir /path/to/output \
  --genome GRCh38 \
  --profile singularity,sanger \
  --pipeline-version dev \
  --dry-run

Scheduler execution example (Slurm):

python scripts/run_pacsomatic.py \
  --tumor-bam /path/to/tumor.bam \
  --normal-bam /path/to/normal.bam \
  --patient-id P001 \
  --tumor-sample-id P001_T \
  --normal-sample-id P001_N \
  --outdir /path/to/output \
  --genome GRCh38 \
  --profile singularity,sanger \
  --pipeline-version dev \
  --executor slurm \
  --queue compute \
  --project my_account \
  --cpus 16 \
  --memory-gb 64 \
  --walltime 48:00 \
  --run

Configuration

Use config.yaml as the baseline for profile/executor/runtime defaults. Override at invocation time when user requirements differ.

Testing

Run unit tests from skill root:

python -m unittest discover -s tests -v

References

• references/agent-playbook.md
• references/config-and-output.md
• references/pacsomatic_guide.md
• scripts/run_pacsomatic.py