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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 0dd7c5a87a
commit fd353fdd8e
3 changed files with 139 additions and 1 deletions
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2
CONTRIBUTING.md
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@ -34,7 +34,7 @@ To clone CRIU repo and switch to the proper branch, run:
### Compile
First, you need to install compile-time dependencies. Check [Installation dependencies](https://criu.org/Installation#Dependencies) for more info.
First, you need to install compile-time dependencies. Check [Installation dependencies](https://criu.org/Installation#Dependencies) for more info. Alternatively, you can use the Nix flake to set up a development environment by running `nix develop`.
To compile CRIU, run:

61
flake.lock generated Normal file
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@ -0,0 +1,61 @@
{
"nodes": {
"flake-utils": {
"inputs": {
"systems": "systems"
},
"locked": {
"lastModified": 1731533236,
"narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1744463964,
"narHash": "sha256-LWqduOgLHCFxiTNYi3Uj5Lgz0SR+Xhw3kr/3Xd0GPTM=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "2631b0b7abcea6e640ce31cd78ea58910d31e650",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"flake-utils": "flake-utils",
"nixpkgs": "nixpkgs"
}
},
"systems": {
"locked": {
"lastModified": 1681028828,
"narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
"owner": "nix-systems",
"repo": "default",
"rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
"type": "github"
},
"original": {
"owner": "nix-systems",
"repo": "default",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

77
flake.nix Normal file
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@ -0,0 +1,77 @@
{
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;
}
);
}