nixcfg/systems/x86_64-linux/sgx/litellm.nix
Harald Hoyer 95668b71a7 feat(sgx): add CLI RAG stack (Qdrant + embeddings gateway + rag tool)
Stand up document retrieval as shared, client-agnostic primitives rather
than locking it inside Open WebUI:

- Qdrant as the LAN-reachable vector store
- LiteLLM gains a bge-m3 route so sgx:4000 also serves /v1/embeddings
- a thin `rag` CLI (ingest/query, optional coder synthesis) usable from
  any machine and from scripts

Embeddings and synthesis run on halo via the gateway; the CLI is
configured entirely through RAG_* env vars.
2026-05-22 00:35:54 +02:00

53 lines
1.7 KiB
Nix

{ config, ... }:
{
# OpenAI-compatible gateway in front of halo's llama-server, exposed as a
# shared endpoint across the Tailnet (per-key routing, logging, future cloud
# fallback) so clients hit sgx:4000 instead of hardcoding halo's address.
services.litellm = {
enable = true;
host = "0.0.0.0";
port = 4000; # 8080 is Open WebUI, 8081 is searx
openFirewall = true; # reachable across the LAN
environmentFile = config.sops.secrets."litellm/env".path;
settings = {
model_list = [
{
# halo exposes the `[coder]` preset from systems/.../halo/models.ini.
# llama-server speaks the OpenAI API, so route it as an openai/* model.
model_name = "coder";
litellm_params = {
model = "openai/coder";
api_base = "http://halo:8000/v1";
api_key = "none"; # llama-server requires no key; value is ignored
};
}
{
# Multilingual embeddings, also served by halo's router (the `[bge-m3]`
# preset). Exposes /v1/embeddings on this gateway for the rag CLI.
model_name = "bge-m3";
litellm_params = {
model = "openai/bge-m3";
api_base = "http://halo:8000/v1";
api_key = "none";
};
}
];
general_settings = {
master_key = "os.environ/LITELLM_MASTER_KEY";
};
litellm_settings = {
drop_params = true;
};
};
};
# Decrypted file must contain the env line: LITELLM_MASTER_KEY=sk-...
# Read by systemd (as root) before dropping to litellm's DynamicUser.
sops.secrets."litellm/env" = {
sopsFile = ../../../.secrets/sgx/litellm.yaml;
restartUnits = [ "litellm.service" ];
};
}