SIFR-PYENV-0003: A package graph requires Python but no root environment is selected. - Sifr

SIFR-PYENV-0003 belongs to the Embedded CPython environment diagnostic family. It means: a package graph requires Python but no root environment is selected.

Why It Happens

The selected Python environment is missing, malformed, ambiguous, or fails probe/ABI checks. Configure exactly one root-application uv environment and ensure the interpreter, site-packages, and declared imports are available.

Use sifr --explain SIFR-PYENV-0003 locally to see the renderer’s exact message template and any machine-applicable suggestions for the compiler version you are running.

Details

Field	Value
Code	`SIFR-PYENV-0003`
Family	`PYENV`
Severity	Error
Stability	stable
Owner	`sifr_package::python`
Representative fixture	`crates/sifr_package/src/python/tests.rs::missing_uv_environment_selection_reports_pyenv_0003`

See the Error Codes index for the complete catalog.