flake: init

.gitignore

@@ -1,3 +1,4 @@
 **/.DS_Store
 env
 *.pyc
+result*

flake.lock

@@ -0,0 +1,26 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1701189068,
+        "narHash": "sha256-Z84Km4ILllusI9IPI9qFRKN4Ss5893Ntbp1TcMCFIds=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "6fc4c1c40c98de86565acdb3fe43c6ba3efb3115",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,23 @@
+{
+  description = "An air quality monitoring service with a Raspberry Pi and a SDS011 sensor.";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs";
+
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
+    systems = ["aarch64-linux"];
+    forEachSystem = nixpkgs.lib.genAttrs systems;
+    pkgsForEach = nixpkgs.legacyPackages;
+  in rec {
+    packages = forEachSystem (system: {
+      default = pkgsForEach.${system}.callPackage ./nix {};
+    });
+
+    devShells = forEachSystem (system: {
+      default = pkgsForEach.${system}.callPackage ./nix/shell.nix {};
+    });
+
+    hydraJobs = packages;
+  };
+}

nix/default.nix

@@ -0,0 +1,62 @@
+{
+  lib,
+  python3Packages,
+  makeWrapper,
+  python3,
+  ...
+}: let
+  pname = "pi_air_quality_monitor";
+  version = "0.0.1";
+in
+  python3Packages.buildPythonApplication {
+    inherit pname version;
+    format = "other";
+
+    src = ../src;
+
+    pythonPath = with python3Packages; [
+      pyserial
+      flask
+      redis
+      ipython
+      apscheduler
+      flask-cors
+      (
+        buildPythonPackage rec {
+          pname = "python-aqi";
+          version = "0.6.1";
+          src = fetchPypi {
+            inherit pname version;
+            hash = "sha256-FBoDoP7UiIDchwbKV7A/MPqRq2DpMwR0v5yaj7m5YCA=";
+          };
+        }
+      )
+    ];
+
+    nativeBuildInputs = [makeWrapper];
+    installFlags = ["prefix=$(out/bin)"];
+
+    postUnpack = ''
+      mkdir -p $out/bin
+      cp -rvf $src/* $out
+    '';
+
+    preFixup = ''
+      buildPythonPath "$pythonPath"
+      gappsWrapperArgs+=(
+        --prefix PYTHONPATH : "$program_PYTHONPATH"
+      )
+      makeWrapper ${lib.getExe python3} $out/bin/${pname} \
+          --add-flags $out/app.py \
+          --prefix PYTHONPATH : "$program_PYTHONPATH" \
+          --chdir $out/bin
+    '';
+
+    meta = {
+      description = "An air quality monitoring service with a Raspberry Pi and a SDS011 sensor. ";
+      homepage = "https://github.com/rydercalmdown/pi_air_quality_monitor";
+      mainProgram = pname;
+      platforms = with lib.platforms; ["aarch64-linux"];
+      maintainers = with lib.maintainers; [NotAShelf];
+    };
+  }

nix/shell.nix

@@ -0,0 +1,13 @@
+{
+  callPackage,
+  mkShellNoCC,
+  python3,
+  ...
+}: let
+  defaultPackage = callPackage ./default.nix;
+in
+  mkShellNoCC {
+    packages = [
+      (python3.withPackages defaultPackage.propagatedBuildInputs)
+    ];
+  }