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{
buildNpmPackage,
fetchFromGitHub,
inter,
nixosTests,
lib,
# This is a app can only be used in a browser and starts a web server only accessible at
# localhost/127.0.0.1 from the local computer at the given port.
defaultHostname ? "127.0.0.1",
defaultPort ? 3000,
# Where to find the Ollama service; this url gets baked into the Nix package
ollamaUrl ? "http://127.0.0.1:11434",
...
}:
let
version = "1.0.1";
in
buildNpmPackage {
pname = "nextjs-ollama-llm-ui";
inherit version;
src = fetchFromGitHub {
owner = "jakobhoeg";
repo = "nextjs-ollama-llm-ui";
rev = "v${version}";
hash = "sha256-pZJgiopm0VGwaZxsNcyRawevvzEcK1j5WhngX1Pn6YE=";
};
npmDepsHash = "sha256-wtHOW0CyEOszgiZwDkF2/cSxbw6WFRLbhDnd2FlY70E=";
patches = [
# Update to a newer nextjs version that buildNpmPackage is able to build.
# Remove at nextjs update.
./0001-update-nextjs.patch
# nextjs tries to download google fonts from the internet during buildPhase and fails in Nix sandbox.
# We patch the code to expect a local font from src/app/Inter.ttf that we load from Nixpkgs in preBuild phase.
./0002-use-local-google-fonts.patch
# Modify next.config.js to produce a production "standalone" output at .next/standalone.
# This output is easy to package with Nix and run with "node .next/standalone/server.js" later.
./0003-add-standalone-output.patch
];
# Adjust buildNpmPackage phases with nextjs quirk workarounds.
# These are adapted from
# https://github.com/NixOS/nixpkgs/blob/485125d667747f971cfcd1a1cfb4b2213a700c79/pkgs/servers/homepage-dashboard/default.nix
#######################3
preBuild = ''
# We have to pass and bake in the Ollama URL into the package
echo "NEXT_PUBLIC_OLLAMA_URL=${ollamaUrl}" > .env
# Replace the googleapis.com Inter font with a local copy from nixpkgs
cp "${inter}/share/fonts/truetype/InterVariable.ttf" src/app/Inter.ttf
'';
postBuild = ''
# Add a shebang to the server js file, then patch the shebang to use a nixpkgs nodejs binary.
sed -i '1s|^|#!/usr/bin/env node\n|' .next/standalone/server.js
patchShebangs .next/standalone/server.js
'';
installPhase = ''
runHook preInstall
mkdir -p $out/{share,bin}
cp -r .next/standalone $out/share/homepage/
cp -r .env $out/share/homepage/
cp -r public $out/share/homepage/public
mkdir -p $out/share/homepage/.next
cp -r .next/static $out/share/homepage/.next/static
chmod +x $out/share/homepage/server.js
# we set a default port to support "nix run ..."
makeWrapper $out/share/homepage/server.js $out/bin/nextjs-ollama-llm-ui \
--set-default PORT ${toString defaultPort} \
--set-default HOSTNAME ${defaultHostname}
runHook postInstall
'';
doDist = false;
#######################
passthru = {
tests = {
inherit (nixosTests) nextjs-ollama-llm-ui;
};
};
meta = {
description = "Simple chat web interface for Ollama LLMs";
changelog = "https://github.com/jakobhoeg/nextjs-ollama-llm-ui/releases/tag/v${version}";
mainProgram = "nextjs-ollama-llm-ui";
homepage = "https://github.com/jakobhoeg/nextjs-ollama-llm-ui";
license = lib.licenses.mit;
maintainers = with lib.maintainers; [ malteneuss ];
platforms = lib.platforms.all;
};
}
|
