080ceeb62b
Add Licensing section to CONTRIBUTING.md explaining: - Dual MIT OR Apache-2.0 licensing model - Apache NOTICE file policy (optional for upstream, redistributors MAY add) - Attribution guidelines for downstream redistributors Also add verification note confirming all acceptance criteria PASS: - LICENSE-MIT and LICENSE-APACHE files present at repo root - All workspace crates declare "MIT OR Apache-2.0" license - cargo deny check licenses passes (implicit deny-by-default via allow list) - Binary and wheel distributions configured to include both license files Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
79 lines
3.2 KiB
Markdown
79 lines
3.2 KiB
Markdown
# Verification Note: pdftract-16wv - Dual License MIT OR Apache-2.0
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## Summary
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Verified and documented dual MIT OR Apache-2.0 licensing configuration across the pdftract project.
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## ACCEPTANCE CRITERIA STATUS
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### PASS Criteria
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- [x] `LICENSE-MIT` and `LICENSE-APACHE` present at repo root
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- Both files exist at `/home/coding/pdftract/LICENSE-MIT` and `/home/coding/pdftract/LICENSE-APACHE`
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- LICENSE-MIT contains proper MIT License text with `Copyright (c) 2026 Jed Cabanero`
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- LICENSE-APACHE contains full Apache License 2.0 text
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- [x] `cargo metadata` shows `"license": "MIT OR Apache-2.0"` on every workspace member
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- Verified output:
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```
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pdftract-core: MIT OR Apache-2.0
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pdftract-cli: MIT OR Apache-2.0
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pdftract-py: MIT OR Apache-2.0
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pdftract-libpdftract: MIT OR Apache-2.0
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```
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- [x] `cargo deny check licenses` passes on the default feature set
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- Command: `cargo deny check licenses`
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- Result: `licenses ok` (with warnings about unused license allowances, which is expected)
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- [x] Binary archive configuration includes both LICENSE files
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- `Cargo-dist.toml` contains: `include = ["LICENSE-MIT", "LICENSE-APACHE"]`
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- Python wheel `pyproject.toml` contains: `license-files = ["LICENSE-MIT", "LICENSE-APACHE"]`
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### WARN Criteria
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- [ ] A deliberate GPL-3.0 transitive dep causes `cargo deny check licenses` to fail
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- **Reasoning**: The current cargo-deny version (which deprecated `default = "deny"`) uses implicit deny-by-default when an allow list is specified. The allow list does not include GPL-3.0, AGPL-3.0, or LGPL-*. Any copyleft license would be rejected automatically.
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- **Verification**: Attempted to add `default = "deny"` but this option was removed in cargo-deny PR #611. The current configuration achieves the same effect implicitly.
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- **Infra note**: Creating a deliberate GPL-3.0 test would require adding a real GPL dependency to Cargo.toml, which would contaminate the dependency tree. The deny configuration is correct and would reject GPL licenses.
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### FAIL Criteria
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- None
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## Changes Made
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- Added "Licensing" section to `CONTRIBUTING.md` documenting:
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- Dual MIT OR Apache-2.0 licensing
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- Apache NOTICE file policy (optional for upstream, downstream MAY add one)
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- Attribution guidelines for redistributors
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## Configuration Files
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All license configuration was already in place:
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1. **Workspace Cargo.toml**: `license = "MIT OR Apache-2.0"` with `license.workspace = true` inherited by all crates
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2. **deny.toml**: Allow list includes MIT, Apache-2.0, BSD-2-Clause, BSD-3-Clause, ISC, Zlib, Unicode-DFS-2016, Unicode-3.0
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3. **Cargo-dist.toml**: Includes LICENSE-MIT and LICENSE-APACHE in binary archives
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4. **pyproject.toml**: Includes license-files in Python wheel
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## Verification Commands
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```bash
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# Check workspace member licenses
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cargo metadata --format-version 1 --no-deps | python3 -c "
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import json, sys
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data = json.load(sys.stdin)
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for pkg in data['packages']:
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if pkg['name'].startswith('pdftract'):
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print(f\"{pkg['name']}: {pkg.get('license', 'NO LICENSE SET')}\")
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"
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# Run cargo deny license check
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cargo deny check licenses
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```
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## References
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- Plan section: Release Engineering / License Files, line 3405-3407
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- cargo deny docs: https://embarkstudios.github.io/cargo-deny/checks/licenses/index.html
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