neverblink-linkml

Fast and robust LinkML schema validation and code generation for Python, backed by LinkML-Scala compiled to a native shared library.

No JVM, no subprocess per schema, and no dependency on the linkml Python package. In our benchmarks the generators are 22.9–38.5x faster than the reference Python implementation.

Install

pip install neverblink-linkml

Usage

import linkml_scala

with linkml_scala.load_file("model.yaml") as schema:
    print(schema.json_schema())
    print(schema.shacl())
    for issue in schema.issues(linkml_scala.WARNING):
        print(issue["severity"], issue["message"])

load_file() will automatically resolve imports and parse the schema. You can reuse the Schema object for multiple generator calls, and it will automatically cache the parsed form of any imported schemas.

Generators available on a Schema: json_schema(), shacl(), rdfs(), linkml(), table_schema(), graphql(), er_diagram() and scala(), plus lint() for validation.

To work from memory instead of the file system, use load_string() for a single schema or load_path() when imports are involved:

schema = linkml_scala.load_path("model.yaml", {
    "model.yaml": "...",
    "person.yaml": "...",
})

Supported platforms

OS Architectures
Linux (glibc) x86-64, ARM64
Linux (musl) x86-64
macOS Apple silicon, Intel
Windows x86-64

Python 3.10 or newer, 64-bit only. Other platforms are currently not supported, and would require an alternative compilation path (e.g., Scala Native). Please open an issue if you need a platform that is not listed above.

Documentation

License

Apache 2.0.

Project links

Data verified by PyPI on Aug 21, 2026
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Avatar for Ostrzyciel from gravatar.com Ostrzyciel

Credits

Author: NeverBlink

GitHub Statistics

Data verified by PyPI on Aug 21, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

Apache-2.0
View SPDX License List

Requires

Python >=3.10

Tags

code-generation json-schema linkml rdf schema shacl validation

Classifiers

Report project as malware

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