tractor/flake.nix

71 lines
2.0 KiB
Nix

# An "impure" template thx to `pyproject.nix`,
# https://pyproject-nix.github.io/pyproject.nix/templates.html#impure
# https://github.com/pyproject-nix/pyproject.nix/blob/master/templates/impure/flake.nix
{
description = "An impure overlay using `uv` with Nix(OS)";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
};
outputs =
{ nixpkgs, ... }:
let
inherit (nixpkgs) lib;
forAllSystems = lib.genAttrs lib.systems.flakeExposed;
in
{
devShells = forAllSystems (
system:
let
pkgs = nixpkgs.legacyPackages.${system};
# XXX NOTE XXX, for now we overlay specific pkgs via
# a major-version-pinned-`cpython`
cpython = "python313";
venv_dir = "py313";
pypkgs = pkgs."${cpython}Packages";
in
{
default = pkgs.mkShell {
packages = with pkgs; [
# XXX, ensure sh completions activate!
bashInteractive
bash-completion
# on nixos, use pkg(s)
ruff
pypkgs.ruff
uv
python313 # ?TODO^ how to set from `cpython` above?
];
shellHook = ''
# unmask to debug **this** dev-shell-hook
# set -e
# link-in c++ stdlib for various AOT-ext-pkgs (numpy, etc.)
LD_LIBRARY_PATH="${pkgs.stdenv.cc.cc.lib}/lib:$LD_LIBRARY_PATH"
export LD_LIBRARY_PATH
# RUNTIME-SETTINGS
# ------ uv ------
# - always use the ./py313/ venv-subdir
# - sync env with all extras
export UV_PROJECT_ENVIRONMENT=${venv_dir}
uv sync --dev --all-extras --no-group lint
# ------ TIPS ------
# NOTE, to launch the py-venv installed `xonsh` (like @goodboy)
# run the `nix develop` cmd with,
# >> nix develop -c uv run xonsh
'';
};
}
);
};
}