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https://github.com/oven-sh/bun
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Add Nix flake for development environment (#23406)
Provides a Nix flake as an alternative to `scripts/bootstrap.sh` for setting up the Bun development environment. ## What's included: - **flake.nix**: Full development environment with all dependencies from bootstrap.sh - LLVM 19, CMake 3.30+, Node.js 24, Rust, Go - Build tools: ninja, ccache, pkg-config, make - Chromium dependencies for Puppeteer testing - gdb for core dump debugging - **shell.nix**: Simple wrapper for `nix-shell` usage - **cmake/CompilerFlags.cmake**: Nix compatibility fixes - Disable zstd debug compression (Nix's LLVM not built with zstd) - Set _FORTIFY_SOURCE=0 for -O0 debug builds - Downgrade _FORTIFY_SOURCE warning to not error ## Usage: ```bash nix-shell export CMAKE_SYSTEM_PROCESSOR=$(uname -m) bun bd ``` ## Verified working: ✅ Successfully compiles Bun debug build ✅ Binary tested: `./build/debug/bun-debug --version` → 1.2.24-debug ✅ All dependencies from bootstrap.sh included ## Advantages: - Fully isolated (no sudo required) - 100% reproducible dependency versions - Fast setup with binary caching --------- Co-authored-by: Claude Bot <claude-bot@bun.sh> Co-authored-by: Claude <noreply@anthropic.com>
This commit is contained in:
robobun
167
flake.nix
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167
flake.nix
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@@ -0,0 +1,167 @@
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{
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description = "Bun - A fast all-in-one JavaScript runtime";
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# Uncomment this when you set up Cachix to enable automatic binary cache
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# nixConfig = {
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# extra-substituters = [
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# "https://bun-dev.cachix.org"
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# ];
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# extra-trusted-public-keys = [
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# "bun-dev.cachix.org-1:REPLACE_WITH_YOUR_PUBLIC_KEY"
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# ];
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# };
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inputs = {
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nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
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flake-utils.url = "github:numtide/flake-utils";
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};
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outputs = { self, nixpkgs, flake-utils }:
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flake-utils.lib.eachDefaultSystem (system:
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let
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pkgs = import nixpkgs {
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inherit system;
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config = {
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allowUnfree = true;
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};
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};
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# LLVM 19 - matching the bootstrap script (targets 19.1.7, actual version from nixpkgs-unstable)
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llvm = pkgs.llvm_19;
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clang = pkgs.clang_19;
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lld = pkgs.lld_19;
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# Node.js 24 - matching the bootstrap script (targets 24.3.0, actual version from nixpkgs-unstable)
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nodejs = pkgs.nodejs_24;
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# Build tools and dependencies
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packages = [
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# Core build tools
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pkgs.cmake # Expected: 3.30+ on nixos-unstable as of 2025-10
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pkgs.ninja
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pkgs.pkg-config
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pkgs.ccache
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# Compilers and toolchain - version pinned to LLVM 19
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clang
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llvm
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lld
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pkgs.gcc
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pkgs.rustc
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pkgs.cargo
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pkgs.go
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# Bun itself (for running build scripts via `bun bd`)
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pkgs.bun
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# Node.js - version pinned to 24
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nodejs
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# Python for build scripts
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pkgs.python3
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# Other build dependencies from bootstrap.sh
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pkgs.libtool
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pkgs.ruby
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pkgs.perl
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# Libraries
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pkgs.openssl
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pkgs.zlib
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pkgs.libxml2
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pkgs.libiconv
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# Development tools
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pkgs.git
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pkgs.curl
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pkgs.wget
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pkgs.unzip
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pkgs.xz
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# Additional dependencies for Linux
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] ++ pkgs.lib.optionals pkgs.stdenv.isLinux [
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pkgs.gdb # for debugging core dumps (from bootstrap.sh line 1535)
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# Chromium dependencies for Puppeteer testing (from bootstrap.sh lines 1397-1483)
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# X11 and graphics libraries
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pkgs.xorg.libX11
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pkgs.xorg.libxcb
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pkgs.xorg.libXcomposite
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pkgs.xorg.libXcursor
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pkgs.xorg.libXdamage
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pkgs.xorg.libXext
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pkgs.xorg.libXfixes
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pkgs.xorg.libXi
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pkgs.xorg.libXrandr
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pkgs.xorg.libXrender
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pkgs.xorg.libXScrnSaver
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pkgs.xorg.libXtst
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pkgs.libxkbcommon
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pkgs.mesa
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pkgs.nspr
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pkgs.nss
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pkgs.cups
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pkgs.dbus
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pkgs.expat
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pkgs.fontconfig
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pkgs.freetype
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pkgs.glib
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pkgs.gtk3
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pkgs.pango
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pkgs.cairo
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pkgs.alsa-lib
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pkgs.at-spi2-atk
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pkgs.at-spi2-core
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pkgs.libgbm # for hardware acceleration
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pkgs.liberation_ttf # fonts-liberation
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pkgs.atk
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pkgs.libdrm
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pkgs.xorg.libxshmfence
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pkgs.gdk-pixbuf
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] ++ pkgs.lib.optionals pkgs.stdenv.isDarwin [
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# macOS specific dependencies
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pkgs.darwin.apple_sdk.frameworks.CoreFoundation
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pkgs.darwin.apple_sdk.frameworks.CoreServices
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pkgs.darwin.apple_sdk.frameworks.Security
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];
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in
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{
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devShells.default = (pkgs.mkShell.override {
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stdenv = pkgs.clangStdenv;
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}) {
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inherit packages;
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shellHook = ''
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# Set up build environment
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export CMAKE_SYSTEM_PROCESSOR="$(uname -m)"
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export TMPDIR="''${TMPDIR:-/tmp}"
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'' + pkgs.lib.optionalString pkgs.stdenv.isLinux ''
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export LD="${pkgs.lib.getExe' lld "ld.lld"}"
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export NIX_CFLAGS_LINK="''${NIX_CFLAGS_LINK:+$NIX_CFLAGS_LINK }-fuse-ld=lld"
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export LD_LIBRARY_PATH="${pkgs.lib.makeLibraryPath packages}''${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
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'' + ''
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# Print welcome message
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echo "====================================="
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echo "Bun Development Environment"
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echo "====================================="
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echo "Node.js: $(node --version 2>/dev/null || echo 'not found')"
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echo "Bun: $(bun --version 2>/dev/null || echo 'not found')"
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echo "Clang: $(clang --version 2>/dev/null | head -n1 || echo 'not found')"
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echo "CMake: $(cmake --version 2>/dev/null | head -n1 || echo 'not found')"
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echo "LLVM: ${llvm.version}"
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echo ""
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echo "Quick start:"
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echo " bun bd # Build debug binary"
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echo " bun bd test <test-file> # Run tests"
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echo "====================================="
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'';
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# Additional environment variables
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CMAKE_BUILD_TYPE = "Debug";
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ENABLE_CCACHE = "1";
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};
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}
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);
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}
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