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Export LLVM version in Nix shells

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This commit is contained in:
Jarred Sumner
2025-10-10 05:51:11 -07:00
parent 012a2bab92
commit 6802331b4c
2 changed files with 25 additions and 0 deletions
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12
flake.nix
View File

@@ -30,6 +30,10 @@
llvm = pkgs.llvm_19;
clang = pkgs.clang_19;
lld = pkgs.lld_19;
llvmVersion = llvm.version;
llvmVersionMajor = pkgs.lib.versions.major llvmVersion;
llvmVersionMinor = pkgs.lib.versions.minor llvmVersion;
llvmVersionPatch = pkgs.lib.versions.patch llvmVersion;
# Node.js 24 - matching the bootstrap script (targets 24.3.0, actual version from nixpkgs-unstable)
nodejs = pkgs.nodejs_24;
@@ -132,6 +136,10 @@
}) {
inherit packages;
# Disable fortify hardening so Bun's debug build (which uses -O0)
# doesn't trip over glibc's _FORTIFY_SOURCE requirement.
hardeningDisable = [ "fortify" ];
shellHook = ''
# Set up build environment
export CC="${pkgs.lib.getExe clang}"
@@ -144,6 +152,10 @@
export CMAKE_RANLIB="$RANLIB"
export CMAKE_SYSTEM_PROCESSOR="$(uname -m)"
export TMPDIR="''${TMPDIR:-/tmp}"
export LLVM_VERSION="${llvmVersion}"
export LLVM_VERSION_MAJOR="${llvmVersionMajor}"
export LLVM_VERSION_MINOR="${llvmVersionMinor}"
export LLVM_VERSION_PATCH="${llvmVersionPatch}"
'' + pkgs.lib.optionalString pkgs.stdenv.isLinux ''
export LD="${pkgs.lib.getExe' lld "ld.lld"}"
export NIX_CFLAGS_LINK="''${NIX_CFLAGS_LINK:+$NIX_CFLAGS_LINK }-fuse-ld=lld"

13
shell.nix
View File

@@ -3,6 +3,12 @@
# This uses unpinned <nixpkgs> for simplicity; flake.nix provides version pinning via flake.lock
{ pkgs ? import <nixpkgs> {} }:
let
llvmVersion = pkgs.llvm_19.version;
llvmVersionMajor = pkgs.lib.versions.major llvmVersion;
llvmVersionMinor = pkgs.lib.versions.minor llvmVersion;
llvmVersionPatch = pkgs.lib.versions.patch llvmVersion;
in
pkgs.mkShell rec {
packages = with pkgs; [
# Core build tools (matching bootstrap.sh)
@@ -76,6 +82,9 @@ pkgs.mkShell rec {
gdk-pixbuf
];
# Disable fortify hardening since Bun's debug build compiles with -O0.
hardeningDisable = [ "fortify" ];
shellHook = ''
export CC="${pkgs.lib.getExe pkgs.clang_19}"
export CXX="${pkgs.lib.getExe' pkgs.clang_19 "clang++"}"
@@ -87,6 +96,10 @@ pkgs.mkShell rec {
export CMAKE_RANLIB="$RANLIB"
export CMAKE_SYSTEM_PROCESSOR=$(uname -m)
export TMPDIR=''${TMPDIR:-/tmp}
export LLVM_VERSION="${llvmVersion}"
export LLVM_VERSION_MAJOR="${llvmVersionMajor}"
export LLVM_VERSION_MINOR="${llvmVersionMinor}"
export LLVM_VERSION_PATCH="${llvmVersionPatch}"
'' + pkgs.lib.optionalString pkgs.stdenv.isLinux ''
export LD="${pkgs.lib.getExe' pkgs.lld_19 "ld.lld"}"
export NIX_CFLAGS_LINK="''${NIX_CFLAGS_LINK:+$NIX_CFLAGS_LINK }-fuse-ld=lld"