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feat: introduce Nix flake

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CRIU currently requires a number of dependencies in order to build from
source. The package names vary across distributions and package
managers. A Nix flake allows developers to spin up a dev environment
with `nix develop`, eliminating the hassle of manual dependency
management. It also prevents polluting the global package set on the
machine.

Signed-off-by: Prajwal S N <prajwalnadig21@gmail.com>
This commit is contained in:
Prajwal S N 2025-04-14 14:06:40 +05:30 • committed by Andrei Vagin
parent 5f18ca1bbe
commit fbfed312e0
3 changed files with 139 additions and 1 deletions
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{
description = "CRIU development environment";
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
flake-utils.url = "github:numtide/flake-utils";
};
outputs = { self, nixpkgs, flake-utils }:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = nixpkgs.legacyPackages.${system};
# Dependencies for CRIU
criuDeps = with pkgs; [
# Compiler and build essentials
gcc
gnumake
pkg-config
# Protocol Buffers
protobuf
protobufc
python3Packages.protobuf
# Other required libraries
libuuid
libbsd
iproute2
nftables
libcap
libnet
libnl
libaio
gnutls
libdrm
# ZDTM
python3Packages.pyyaml
];
# Multilib support for 32-bit compatibility
# criuDeps32bit = with pkgs; [
# glibc.dev
# glibc
# gcc-unwrapped
# ];
devShell = pkgs.mkShell {
buildInputs = criuDeps; # ++ (if pkgs.stdenv.isx86_64 then criuDeps32bit else []);
shellHook = ''
echo "CRIU development environment"
echo "=============================="
echo ""
echo "Useful commands:"
echo " make - Build CRIU"
echo " make test - Run tests (requires ZDTM dependencies)"
echo ""
'';
# Add proper flags for multilib support
# NIX_CFLAGS_COMPILE = pkgs.lib.optional pkgs.stdenv.isx86_64 "-m32";
# Make sure the shell can find headers for multilib
# PKG_CONFIG_PATH = pkgs.lib.makeSearchPath "lib/pkgconfig" criuDeps;
};
in
{
# Export the development shell
devShells.default = devShell;
# Build CRIU package as well
packages.default = pkgs.criu;
}
);
}