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|
{
inputs.nixpkgs.url = "nixpkgs/nixos-21.11";
inputs.flake-utils.url = "github:numtide/flake-utils";
inputs.flake-utils.inputs.nixpkgs.follows = "nixpkgs";
outputs = { self, nixpkgs, flake-utils }:
let
ebus-rust-derivation = { lib, runCommandNoCC, rustPlatform, pkg-config, openssl }:
rustPlatform.buildRustPackage rec {
name = "ebus-rust";
# not sure why this hack is needed to make sourceRoot work
src = runCommandNoCC "source" { } ''
mkdir -p $out
cp -r ${./.}/* $out
'';
cargoLock = {
lockFile = ./ebus-rust/Cargo.lock;
};
nativeBuildInputs = [ pkg-config ];
buildInputs = [ openssl ];
sourceRoot = "source/ebus-rust";
};
in
flake-utils.lib.eachDefaultSystem
(system:
let
pkgs = nixpkgs.legacyPackages.${system};
in
rec {
packages = {
ebus-rust = pkgs.callPackage ebus-rust-derivation { };
};
devShell = pkgs.mkShell {
nativeBuildInputs = with pkgs; [
cargo
rustc
pkg-config
rustfmt
rls
clippy
bashInteractive
nixpkgs-fmt
gitFull
xxd
influxdb
#
racket
#
gnumake
libxml2
libxslt
pandoc
];
buildInputs = with pkgs; [
openssl
];
RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
};
})
//
{
nixosModules = {
ebus-rust = { config, lib, pkgs, ... }:
let
cfg = config.services.ebus-rust;
ebus-rust = pkgs.callPackage ebus-rust-derivation { };
in
{
options = {
services.ebus-rust = {
enable = lib.mkEnableOption "enable ebus parser";
user = lib.mkOption {
default = "root";
description = "user to run the ebus process";
};
device = lib.mkOption {
default = "/dev/ttyUSB0";
};
};
};
config = lib.mkIf cfg.enable {
systemd.services.ebus = {
description = "ebus protocol parser and influxdb inserter";
wantedBy = [ "multi-user.target" ];
after = [ "networking.target" "influxdb.service" ];
script = ''
${pkgs.coreutils}/bin/stty 9600 < ${cfg.device}
RUST_LOG=info ${ebus-rust}/bin/ebus --enhanced influxdb < ${cfg.device}
'';
serviceConfig = { User = cfg.user; };
};
};
};
};
};
}
|
