Evan Reichard
a7941db240
Update llama-cpp from tagged release b9196 to HEAD build dated 2026-05-19 (rev b28a2f37). Switch to date-based versioning for HEAD builds and update source/webui hashes. Also clarify update-package-hashes skill: always use lib.fakeHash instead of literal sha256 placeholder strings.
108 lines
3.6 KiB
Nix
108 lines
3.6 KiB
Nix
{ pkgs }:
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let
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# Version MUST be an integer string.
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# For tagged releases use the tag number (e.g. "9222").
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# For HEAD builds use YYYYMMDD (e.g. "20260519").
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version = "20260519";
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src = pkgs.fetchFromGitHub {
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owner = "ggml-org";
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repo = "llama.cpp";
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rev = "b28a2f372a4a470a90ad10f93654e5dc33e78949";
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hash = "sha256-SXOpTS3q5Vaik76fg2WQ1mmwAk9+KSMdLe4AErQQlOA=";
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leaveDotGit = true;
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postFetch = ''
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git -C "$out" rev-parse --short HEAD > $out/COMMIT
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find "$out" -name .git -print0 | xargs -0 rm -rf
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'';
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};
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# Pre-Built WebUI Assets
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# As of b9151 llama.cpp removed the prebuilt WebUI from the repo and tries to
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# curl them from a HuggingFace bucket at build time. That fails in the Nix
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# sandbox. We build the UI from source in a separate derivation and drop the
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# 4 output files into build/tools/ui/dist/ so cmake's "Priority 1: local
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# assets present" branch short-circuits the network fetch.
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#
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# As of b9180 the source dir was renamed tools/server/webui -> tools/ui, and
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# the vite plugin now writes to ../../build/tools/ui/dist relative to tools/ui.
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webuiNpmDeps = pkgs.fetchNpmDeps {
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name = "llama-webui-${version}-npm-deps";
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inherit src;
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sourceRoot = "${src.name}/tools/ui";
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hash = "sha256-Iyg8FpcTKf2UYHuK7mA3cTAqVaLcQPcS0YCa5Qf01Gc=";
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};
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webui = pkgs.buildNpmPackage {
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pname = "llama-webui";
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inherit version src;
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# Custom unpack: the vite plugin writes to ../../build/tools/ui/dist, so
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# the whole tree from the repo root must be writable. Plain sourceRoot
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# leaves the parent dirs in the read-only Nix store.
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unpackPhase = ''
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runHook preUnpack
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cp -r ${src} llama-src
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chmod -R u+w llama-src
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cd llama-src/tools/ui
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runHook postUnpack
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'';
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npmDeps = webuiNpmDeps;
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# The vite plugin writes to ../../build/tools/ui/dist; ensure it exists.
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preBuild = ''
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mkdir -p ../../build/tools/ui/dist
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'';
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installPhase = ''
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runHook preInstall
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mkdir -p $out
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install -Dm644 ../../build/tools/ui/dist/index.html $out/index.html
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install -Dm644 ../../build/tools/ui/dist/bundle.js $out/bundle.js
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install -Dm644 ../../build/tools/ui/dist/bundle.css $out/bundle.css
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install -Dm644 ../../build/tools/ui/dist/loading.html $out/loading.html
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runHook postInstall
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'';
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};
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in
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(pkgs.llama-cpp.override {
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cudaSupport = true;
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blasSupport = true;
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rocmSupport = false;
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metalSupport = false;
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vulkanSupport = true;
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}).overrideAttrs
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(oldAttrs: {
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inherit version src;
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# Add SPIR-V Headers for Vulkan Backend
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# Newer llama.cpp requires spirv/unified1/spirv.hpp which isn't
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# pulled in by vulkan-headers alone.
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buildInputs = (oldAttrs.buildInputs or [ ]) ++ [ pkgs.spirv-headers ];
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# Auto CPU Optimizations
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cmakeFlags = (oldAttrs.cmakeFlags or [ ]) ++ [
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"-DGGML_CUDA_ENABLE_UNIFIED_MEMORY=1"
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"-DCMAKE_CUDA_ARCHITECTURES=61;86" # GTX 1070 / GTX 1080ti / RTX 3090
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];
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# Disable Nix's march=native Stripping
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preConfigure = ''
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export NIX_ENFORCE_NO_NATIVE=0
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${oldAttrs.preConfigure or ""}
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'';
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# Drop pre-built UI assets into build/tools/ui/dist/ so cmake's
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# Priority 1 path picks them up and skips the HF Bucket fetch.
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postPatch = ''
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${oldAttrs.postPatch or ""}
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mkdir -p build/tools/ui/dist
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cp ${webui}/* build/tools/ui/dist/
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'';
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# Expose the WebUI sub-derivation so it can be built/tested in isolation:
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# nix build .#llama-cpp.webui --builders ''
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passthru = (oldAttrs.passthru or { }) // { inherit webui; };
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})
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