thermostat/flake.nix

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{
description = "Firmware for the Sinara 8451 Thermostat";
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inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-24.05";
inputs.rust-overlay = {
url = "github:oxalica/rust-overlay";
inputs.nixpkgs.follows = "nixpkgs";
};
outputs =
{
self,
nixpkgs,
rust-overlay,
}:
let
pkgs = import nixpkgs {
system = "x86_64-linux";
overlays = [ (import rust-overlay) ];
};
rust = pkgs.rust-bin.stable."1.66.0".default.override {
extensions = [ "rust-src" ];
targets = [ "thumbv7em-none-eabihf" ];
};
rustPlatform = pkgs.makeRustPlatform {
rustc = rust;
cargo = rust;
};
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thermostat = rustPlatform.buildRustPackage {
name = "thermostat";
version = "0.0.0";
src = self;
cargoLock = {
lockFile = ./Cargo.lock;
outputHashes = {
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"stm32-eth-0.2.0" = "sha256-48RpZgagUqgVeKm7GXdk3Oo0v19ScF9Uby0nTFlve2o=";
};
};
nativeBuildInputs = [ pkgs.llvm ];
buildPhase = ''
cargo build --release --bin thermostat
'';
installPhase = ''
mkdir -p $out $out/nix-support
cp target/thumbv7em-none-eabihf/release/thermostat $out/thermostat.elf
echo file binary-dist $out/thermostat.elf >> $out/nix-support/hydra-build-products
llvm-objcopy -O binary target/thumbv7em-none-eabihf/release/thermostat $out/thermostat.bin
echo file binary-dist $out/thermostat.bin >> $out/nix-support/hydra-build-products
'';
dontFixup = true;
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auditable = false;
};
pythermostat = pkgs.python3Packages.buildPythonPackage {
pname = "pythermostat";
version = "0.0.0";
src = "${self}/pythermostat";
propagatedBuildInputs =
with pkgs.python3Packages; [
numpy
matplotlib
];
};
pythermostat-dev-wrappers = pkgs.runCommandNoCC "pythermostat-dev-wrappers" { } ''
mkdir -p $out/bin
for program in ${self}/pythermostat/*.py; do
if [ -x $program ]; then
progname=`basename -s .py $program`
outname=$out/bin/thermostat_$progname
echo "#!${pkgs.bash}/bin/bash" >> $outname
echo "exec python -m $progname \"\$@\"" >> $outname
chmod 755 $outname
fi
done
'';
in
{
packages.x86_64-linux = {
inherit thermostat pythermostat;
default = thermostat;
};
hydraJobs = {
inherit thermostat;
};
devShells.x86_64-linux.default = pkgs.mkShellNoCC {
name = "thermostat-dev-shell";
packages =
with pkgs;
[
rust
llvm
openocd
dfu-util
rlwrap
pythermostat-dev-wrappers
]
++ (with python3Packages; [
numpy
matplotlib
]);
shellHook = ''
export PYTHONPATH=`git rev-parse --show-toplevel`/pythermostat:$PYTHONPATH
'';
};
formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixfmt-rfc-style;
};
}