feat: allow building distro with external providers (#1967)

# What does this PR do?

We can now build a distribution that includes external providers.
Closes: https://github.com/meta-llama/llama-stack/issues/1948

## Test Plan

Build a distro with an external provider following the doc instructions.

[//]: # (## Documentation)

Added.

Rendered:


![Screenshot 2025-04-18 at 11 26
39](https://github.com/user-attachments/assets/afcf3d50-8d30-48c3-8d24-06a4b3662881)

Signed-off-by: Sébastien Han <seb@redhat.com>
This commit is contained in:
Sébastien Han 2025-04-18 17:18:28 +02:00 committed by GitHub
parent c4570bcb48
commit 94f83382eb
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11 changed files with 137 additions and 69 deletions

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@ -12,7 +12,6 @@ from typing import Any, Dict, List
import yaml
from pydantic import BaseModel
from llama_stack.distribution.datatypes import StackRunConfig
from llama_stack.log import get_logger
from llama_stack.providers.datatypes import (
AdapterSpec,
@ -97,7 +96,9 @@ def _load_inline_provider_spec(spec_data: Dict[str, Any], api: Api, provider_nam
return spec
def get_provider_registry(config: StackRunConfig | None = None) -> Dict[Api, Dict[str, ProviderSpec]]:
def get_provider_registry(
config=None,
) -> Dict[Api, Dict[str, ProviderSpec]]:
"""Get the provider registry, optionally including external providers.
This function loads both built-in providers and external providers from YAML files.
@ -122,7 +123,7 @@ def get_provider_registry(config: StackRunConfig | None = None) -> Dict[Api, Dic
llama-guard.yaml
Args:
config: Optional StackRunConfig containing the external providers directory path
config: Optional object containing the external providers directory path
Returns:
A dictionary mapping APIs to their available providers
@ -142,7 +143,8 @@ def get_provider_registry(config: StackRunConfig | None = None) -> Dict[Api, Dic
except ImportError as e:
logger.warning(f"Failed to import module {name}: {e}")
if config and config.external_providers_dir:
# Check if config has the external_providers_dir attribute
if config and hasattr(config, "external_providers_dir") and config.external_providers_dir:
external_providers_dir = os.path.abspath(config.external_providers_dir)
if not os.path.exists(external_providers_dir):
raise FileNotFoundError(f"External providers directory not found: {external_providers_dir}")