electron-rare/kicad9plus-sch-corpus

WARNING — DEPRECATED — DO NOT USE

This dataset was found to mix incompatible licenses under a unified CC-BY-SA-4.0 umbrella. The CC-BY-SA-4.0 license is one-way compatible only: works can flow to GPLv3, never the reverse (Creative Commons announcement, 2015). Aggregating GPL-3.0 / CERN-OHL-S-2.0 / EUPL-1.2 inputs (68% of this corpus) under a CC-BY-SA-4.0 umbrella violates their copyleft reciprocity.

It has been split into two compliant datasets:

• Permissive subset (98 samples, CC-BY-SA-4.0): https://huggingface.co/datasets/electron-rare/kicad9plus-permissive
• Copyleft subset (209 samples, GPL-3.0-or-later): https://huggingface.co/datasets/electron-rare/kicad9plus-copyleft

Audit details: https://github.com/ailiance/ailiance-bench/blob/main/docs/audit_kicad9plus.md

The original files below remain for archival / reproducibility only. Use the split datasets above for any new work.

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KiCad 9+ Schematic Corpus (archive)

A curated corpus of .kicad_sch (S-expression) schematic files in KiCad 9+ format (version >= 20240722) for fine-tuning language models on EDA / schematic generation tasks.

Contents

• 307 publicly-licensed .kicad_sch samples (3.15 MB)
• Format: chat-style JSONL with messages + per-sample metadata
• Tracks source URL, license SPDX, commit hash, KiCad version
• 99.6% pass rate via kicad-cli sch erc validation

Sample format

{
  "messages": [
    {"role": "user", "content": "Generate a KiCad 10 schematic"},
    {"role": "assistant", "content": "(kicad_sch (version 20260306) ...)"}
  ],
  "metadata": {
    "source_url": "https://github.com/owner/repo/blob/SHA/path.kicad_sch",
    "license_spdx": "MIT",
    "commit_sha": "abc123...",
    "kicad_version": "20260306",
    "file_size_bytes": 4523,
    "downloaded_at": "2026-05-11T05:30:00Z",
    "ia_act_status": "requires_review"
  }
}

License mix (input)

License	Samples	%
GPL-3.0	169	55%
Apache-2.0	74	24%
CERN-OHL-S-2.0	36	12%
MIT	20	6%
EUPL-1.2 / CC0 / CERN-OHL-P-2.0	8	3%

All sources are permissive or copyleft with attribution. Per-sample license is preserved in metadata.license_spdx. See LICENSE_INVENTORY.md for full attribution.

KiCad version distribution

Mixte: 20240722 (KiCad 9 dev), 20250114 (KiCad 9 stable), 20250610 (KiCad 9.0.1), 20260101 / 20260306 (KiCad 10).

Sources

Top contributing repos:

• jaguilar/kicad (133 sch)
• flaviens/kicad (34)
• chipsalliance/rocket-pcb (24)
• absmach/s0 (19)
• oaslananka/kicad-studio (15)
• KungfuPancake/longboi (14)
• KiCad/kicad-source-mirror (demos + qa)

Discovered via gh search code "version 20XXXXXX extension:kicad_sch".

Validation

Each sample was validated with kicad-cli sch erc --format json --severity-all. Files that failed parsing were excluded (3/800 = 0.4% rejection rate).

EU AI Act compliance (corrected)

Original cardData stated ia_act_status: compliant — the 2026-05-11 audit downgraded this to requires_review because of the license-incompatibility issue described in the deprecation banner above. The split datasets (-permissive and -copyleft) carry the corrected status in their per-sample metadata.

• Per-sample provenance: every sample carries source_url, commit_sha, and license_spdx in metadata
• Reproducibility: pipeline scripts at https://github.com/ailiance/ailiance-bench/tree/main/scripts (build_kicad9plus_dataset.py + kicad9plus_pipeline.sh)

Citation

@dataset{electron_rare_kicad9plus_2026,
  author       = {electron-rare},
  title        = {KiCad 9+ Schematic Corpus (DEPRECATED)},
  year         = {2026},
  publisher    = {Hugging Face},
  url          = {https://huggingface.co/datasets/electron-rare/kicad9plus-sch-corpus},
  note         = {Deprecated — split into kicad9plus-permissive and kicad9plus-copyleft}
}

Pipeline

1. gh search code for (kicad_sch (version 202X...)) patterns
2. License filter (SPDX whitelist)
3. Sparse-clone + sidecar .meta.json per file
4. kicad-cli sch erc validation
5. JSONL build + dedup SHA-256 + truncation @ 8KB

See electron-bench/scripts/kicad9plus_pipeline.sh for full pipeline.

Limitations

• Sample prompts are generic ("Generate a KiCad 10 schematic"). Future work: per-sample descriptions via reverse-task LLM generation.
• Files truncated at 8 KB to fit training context (marked in metadata).
• 367 additional internal/proprietary samples available locally but excluded from public release.
• Dominated by KiCad 9 stable (20250114). KiCad 10 strict (20260306+) corpus is smaller (~50 samples).