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Document language_version inferring for Python and Go #2241

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j178 merged 1 commit into from
Jun 23, 2026
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Document language_version inferring for Python and Go #2241

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8 changes: 7 additions & 1 deletion docs/languages.md
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Expand Up @@ -273,6 +273,9 @@ Supported formats:

Pre-release strings (for example `go1.22rc1`) are not supported yet.

For remote hook repositories, `language_version` may be inferred from the `go`
and `toolchain` directives in the hook repository's `go.mod`.

### haskell

prek installs Haskell hooks via Cabal and runs the configured entry. Please ensure the repository contains a `.cabal` file or configured `additional_dependencies` for proper dependency management.
Expand Down Expand Up @@ -359,6 +362,9 @@ Supported formats:

prek uses `uv` for virtual environments and dependency installs, and can auto-install Python toolchains based on `language_version`.

For remote hook repositories, `language_version` may be inferred from
`[project].requires-python` in the hook repository's `pyproject.toml`.

#### Dependency management with `uv`

prek uses `uv` for creating virtual environments and installing dependencies:
Expand Down Expand Up @@ -409,7 +415,7 @@ main()

- The first part of the `entry` field must be a path to a local Python script
- If `additional_dependencies` is specified in `.pre-commit-config.yaml`, script metadata will be ignored
- When both `language_version` (in config) and `requires-python` (in script) are set, `language_version` takes precedence
- When both `language_version` (in config) and `requires-python` (in script) are set, script metadata takes precedence
- Only `dependencies` and `requires-python` fields are supported; other metadata like `tool.uv` is ignored

### r
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