License Matrix

The runtime code is MIT. Fixture and reference-reader licenses vary and are tracked per format under samples/.

Runtime Rule

The Rust crates, Python package, R package and reverse-lab code are MIT. Runtime parser dependencies must remain permissive. Current container helpers include pure-Rust crates such as calamine, hdf5-reader, matfile and cfb; the added cfb OLE2 reader is MIT, with immediate transitive dependencies under MIT / Apache-2.0-compatible terms. flate2 is used for zlib-compressed MAT v5 blocks and is MIT / Apache-2.0-compatible. R workspace support uses rds2rust (MIT) plus xz2 / lzma-sys (MIT / Apache-2.0) for XZ-compressed .RData payloads.

Reference Reader Rule

Reference readers may be:

• permissive and usable as development dependencies;

• GPL and usable only through isolated subprocess conformance jobs;

• unavailable or vendor-only, requiring clean-room reverse engineering.

No GPL package is imported by the runtime Python package or linked into the Rust core.

Fixture Rule

Every committed fixture needs source, license and hash documentation. Private or non-redistributable fixtures must stay outside the public repository and be referenced only by local manifest entries.

Horiba / JobinYvon fixtures are split across GPL-3.0 RosettaSciIO XML samples and MIT text/map samples from SpectroChemPy data and ccoverstreet/horiba-raman. They are test fixtures only; no GPL reader code is linked or imported by the runtime.

Renishaw WDF fixtures are split across GPL-3.0 RosettaSciIO samples and MIT SpectroChemPy data samples. They are test fixtures only; reference readers stay outside the runtime.

Princeton TriVista TVF fixtures come from GPL-3.0 RosettaSciIO test data. They are committed as conformance fixtures only; rsciio.trivista is used for layout comparison outside the runtime.

DigitalSurf SUR/PRO fixtures come from GPL-3.0 RosettaSciIO test data. They are committed as conformance fixtures only; rsciio.digitalsurf is used for layout and value comparison outside the runtime.

Hamamatsu IMG fixtures come from GPL-3.0 RosettaSciIO test data. They are committed as conformance fixtures only; rsciio.hamamatsu is used for layout, axis and value comparison outside the runtime.

mzML fixtures come from MIT-licensed pymzML test data. They are committed for format detection and non-NIRS refusal tests.

ANDI/MS NetCDF fixtures come from GPL-2.0 PyMassSpec test data. They are committed as format-detection and non-NIRS refusal fixtures only; PyMassSpec is not vendored or imported by runtime code.