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+We install some stuff on Nix (as much as we can) and the rest with `uv pip`.
+
+That works well. Which means it installs. But the `venv`, which is in `.venv`, also has a python runtime there, and as we're using the nix store python runtime, it won't see the venv packages. So you gotta do `source .venv/bin/activate` which is pretty weird but it does work.
+
+
+21-9-2025- Long convo with ChatGPT about torch and numpy and tensors and ndarrays. idgi but interesting, should revisit.
+Apparently transformers need the with torch.no_grad(): thing all the time but sentence transformers don't. at all
+
+
+
+
+## DIM creating the DB table is retarded damn you chatgpt
+>>  he says
+TL;DR
+
+DIM = number of floats per embedding vector (fixed by the model).
+
+sqlite-vec needs it at table creation.
+
+You don’t restart the DB every run — you just make sure new embeddings match the stored DIM.
+
+Best practice: store model+dim in a meta table so you don’t accidentally mix dimensions.