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{
description = "Focaccia: A Symbolic Tester for QEMU";
inputs = {
self.submodules = true;
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
flake-utils.url = "github:numtide/flake-utils";
pyproject-nix = {
url = "github:pyproject-nix/pyproject.nix";
inputs.nixpkgs.follows = "nixpkgs";
};
uv2nix = {
url = "github:pyproject-nix/uv2nix";
inputs.nixpkgs.follows = "nixpkgs";
inputs.pyproject-nix.follows = "pyproject-nix";
};
pyproject-build-systems = {
url = "github:pyproject-nix/build-system-pkgs";
inputs.uv2nix.follows = "uv2nix";
inputs.nixpkgs.follows = "nixpkgs";
inputs.pyproject-nix.follows = "pyproject-nix";
};
};
outputs = {
uv2nix,
nixpkgs,
flake-utils,
pyproject-nix,
pyproject-build-systems,
...
}:
flake-utils.lib.eachSystem [ "x86_64-linux" "aarch64-linux" "aarch64-darwin" ] (system:
let
# Refine nixpkgs used in flake to system arch
pkgs = import nixpkgs {
inherit system;
};
# Pin Python version
python = pkgs.python312;
# Define workspace root and load uv workspace metadata
workspace = uv2nix.lib.workspace.loadWorkspace { workspaceRoot = ./.; };
# Create an overlay for Nix that includes extracted Python packages declared as dependencies
# in uv
overlay = workspace.mkPyprojectOverlay { sourcePreference = "wheel"; };
editableOverlay = workspace.mkEditablePyprojectOverlay {
# Use environment variable
root = "$REPO_ROOT";
members = [ "miasm" ];
};
# Another overlay layer for flake-specific overloads
# This might be needed because uv does not have sufficient metadata
# Here, uv does include metadata about build systems used by each dependency
# Ergo we need to add a nativeBuildInput to miasm because it depends on setuptools for its
# installation
pyprojectOverrides = self: super: {
miasm = super.miasm.overrideAttrs (old: {
nativeBuildInputs = (old.nativeBuildInputs or []) ++ [ self.setuptools ];
});
z3-solver = super.z3-solver.overrideAttrs (old: {
nativeBuildInputs = (old.nativeBuildInputs or []) ++ [ self.setuptools self.cmake ];
});
};
pyprojectOverridesEditable = self: super: {
miasm = super.miasm.overrideAttrs (old: {
nativeBuildInputs = (old.nativeBuildInputs or []) ++ [ self.setuptools ];
src = pkgs.lib.fileset.toSource {
root = old.src;
fileset = pkgs.lib.fileset.unions [
(old.src + "/pyproject.toml")
(old.src + "/README.md")
(old.src + "/src/miasm/__init__.py")
];
};
});
z3-solver = super.z3-solver.overrideAttrs (old: {
nativeBuildInputs = (old.nativeBuildInputs or []) ++ [ self.setuptools self.cmake ];
});
};
# Build a set of Python packages
# The call to callPackage here uses the base package set from pyproject.nix
# We inherit the Python version to ensure that the packages have the same version
#
# The overrideScope here customizes the Python package set with an overlay defined by the
# composition of three overlay functions
pythonSet = (pkgs.callPackage pyproject-nix.build.packages { inherit python; }).
overrideScope (pkgs.lib.composeManyExtensions [
pyproject-build-systems.overlays.default
overlay
pyprojectOverrides
]);
pythonSetEditable = pythonSet.overrideScope (
pkgs.lib.composeManyExtensions [
editableOverlay
pyprojectOverridesEditable
]
);
# Create a Python venv with the default dependency group
pythonEnv = pythonSet.mkVirtualEnv "miasm-env" workspace.deps.default;
# Create a Python venv with the default dependency group
pythonDevEnv = pythonSetEditable.mkVirtualEnv "miasm-env" workspace.deps.all;
uvEnv = {
UV_NO_SYNC = "1";
UV_PYTHON = python.interpreter;
UV_PYTHON_DOWNLOADS = "never";
};
uvShellHook = ''
unset PYTHONPATH
export REPO_ROOT=$(git rev-parse --show-toplevel)
'';
in rec {
# Default package just builds Focaccia
packages = rec {
miasm = pythonEnv;
dev = pythonDevEnv.overrideAttrs (old: {
propagatedBuildInputs = (old.propagatedBuildInputs or []) ++ [
pkgs.uv
];
});
default = miasm;
};
devShells = {
default = pkgs.mkShell {
packages = [ packages.dev ];
env = uvEnv;
shellHook = uvShellHook;
};
basic = pkgs.mkShell {
packages = [ pkgs.uv packages.miasm ];
env = uvEnv;
shellHook = uvShellHook;
};
};
# TODO
checks = {
miasm-tests = pkgs.stdenv.mkDerivation {
name = "miasm-tests";
src = ./.;
doCheck = true;
dontBuild = true;
nativeCheckInputs = [ packages.dev pythonDevEnv ];
checkPhase = ''
set -euo pipefail
export REPO_ROOT="$PWD"
${packages.dev}/bin/python -m 'pytest' -q tests
touch $out
'';
env = uvEnv;
shellHook = uvShellHook;
};
};
});
}
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