60 lines
2.2 KiB
Nix
60 lines
2.2 KiB
Nix
{
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perSystem = { lib, config, pkgs, ... }: {
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# https://flake.parts/options/nix-cargo-integration
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nci.projects.nix-bindings = {
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path = ./.;
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drvConfig = {
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mkDerivation = {
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buildInputs = [
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config.packages.nix
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# stdbool.h
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pkgs.stdenv.cc
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];
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nativeBuildInputs = [
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pkgs.pkg-config
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];
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# Prepare the environment for Nix to work.
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# Nix does not provide a suitable environment for running itself in
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# the sandbox - not by default. We configure it to use a relocated store.
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preCheck = ''
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# nix needs a home directory
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export HOME="$(mktemp -d $TMPDIR/home.XXXXXX)"
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# configure a relocated store
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store_data=$(mktemp -d $TMPDIR/store-data.XXXXXX)
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export NIX_REMOTE="$store_data"
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export NIX_BUILD_HOOK=
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export NIX_CONF_DIR=$store_data/etc
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export NIX_LOCALSTATE_DIR=$store_data/nix/var
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export NIX_LOG_DIR=$store_data/nix/var/log/nix
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export NIX_STATE_DIR=$store_data/nix/var/nix
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echo "Configuring relocated store at $NIX_REMOTE..."
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# Init ahead of time, because concurrent initialization is flaky
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${# Not using nativeBuildInputs because this should (hopefully) be
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# the only place where we need a nix binary. Let's stay in control.
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pkgs.buildPackages.nix}/bin/nix-store --init
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echo "Store initialized."
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'';
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};
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# NOTE: duplicated in flake.nix devShell
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env = {
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LIBCLANG_PATH =
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if pkgs.stdenv.cc.isClang then
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null # don't set the variable
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else
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lib.makeLibraryPath [ pkgs.buildPackages.llvmPackages.clang-unwrapped ];
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BINDGEN_EXTRA_CLANG_ARGS =
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if pkgs.stdenv.cc.isClang then
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null # don't set the variable
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else
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"-I${pkgs.stdenv.cc.libc.dev}/include"
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+ " -I${lib.getDev pkgs.stdenv.cc.cc}/lib/gcc/${pkgs.stdenv.hostPlatform.config}/${pkgs.stdenv.cc.cc.version}/include"
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;
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};
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};
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};
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};
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}
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