added oneapi ollama

flake.nix

@@ -25,6 +25,7 @@
             inputs.home-manager.nixosModules.default
             inputs.stylix.nixosModules.stylix
             nixos-hardware.nixosModules.lenovo-thinkpad-x13-yoga
+	    (import ./overlays/ollama.nix)
           ];
         };
 
@@ -34,6 +35,7 @@
             ./hosts/server/configuration.nix
             inputs.home-manager.nixosModules.default
             nixos-hardware.nixosModules.system76
+	    (import ./overlays/ollama.nix)
           ];
         };
 

hosts/server/service.nix

@@ -31,10 +31,8 @@
 
     ollama = {
       enable = true;
-      package = pkgs.ollama.overrideAttrs (oldAttrs: {
-        NIX_CFLAGS_COMPILE = "${oldAttrs.NIX_CFLAGS_COMPILE or ""} -mavx2 -mfma -march=native -O3";
-      });
-    };
+      package = pkgs.ollama-intel;
+      };
 
     gitea = {
       enable = true;

overlays/ollama.nix

@@ -0,0 +1,40 @@
+{ config, pkgs, lib, ... }:
+
+{
+  nixpkgs.overlays = [
+    (final: prev: {
+      ollama-intel = prev.ollama.overrideAttrs (oldAttrs: {
+        buildInputs = oldAttrs.buildInputs or [ ]
+          ++ [ prev.intel-compute-runtime.drivers ];
+        propagatedBuildInputs = oldAttrs.propagetedBuildInputs or [ ]
+          ++ [ prev.intel-compute-runtime.drivers ];
+
+        NIX_CFLAGS_COMPILE =
+          "${oldAttrs.NIX_CFLAGS_COMPILE or ""} -mavx2 -mfma -O3";
+        cmakeFlags = [
+          "GGML_NATIVE=true"
+          "BUILD_SHARED_LIBS=true"
+          "GGML_BLAS=true"
+          "GGML_SYCL=true"
+          "GGML_SYCL_F16=false"
+          "CMAKE_C_COMPILER=icx"
+          "CMAKE_CXX_COMPILER=icpx"
+        ];
+
+        postInstall = (oldAttrs.postInstall or "") + ''
+          mkdir -p "$out/bin"
+          cat << EOF > "$out/bin/ollama-wrapped"
+          #!/bin/sh
+          export LD_LIBRARY_PATH="${prev.intel-compute-runtime.drivers}/lib"
+          export OLLAMA_INTEL_GPU=-1
+          exec "$out/bin/ollama-base" "\$@"
+          EOF
+          chmod +x "$out/bin/ollama-wrapped"
+          mv $out/bin/ollama $out/bin/ollama-base
+          ln -s "$out/bin/ollama-wrapped" "$out/bin/ollama"
+        '';
+      });
+    })
+  ];
+}
+