Stub out day 1

Author: fwcd

day01/derivation.nix

@@ -0,0 +1,10 @@
+{ stdenv, powershell }:
+  stdenv.mkDerivation {
+    name = "advent-of-code-2024-day01";
+    src = ./src;
+
+    installPhase = ''
+      mkdir -p $out/bin
+      cp day01.ps1 $out/bin/day01
+    '';
+  }

day01/flake.lock

@@ -0,0 +1,28 @@
+{
+  description = "Advent of Code 2024 - Day 01 solution";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  };
+
+  outputs = { self, nixpkgs }:
+    let
+      supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
+      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+    in {
+      packages = forAllSystems (system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+        in {
+          default = pkgs.callPackage ./derivation.nix {};
+        }
+      );
+
+      apps = forAllSystems (system: {
+        default = {
+          type = "app";
+          program = "${self.packages.${system}.default}/bin/day01";
+        };
+      });
+    };
+}

day01/flake.nix

@@ -0,0 +1,3 @@
+#!/usr/bin/env pwsh
+
+Write-Output "Hello, world!"

day01/src/day01.ps1

@@ -1 +1,9 @@
-[]
+[
+  {
+    "lang": {
+      "codemirror": "powershell",
+      "name": "PowerShell"
+    },
+    "path": "day01/src/day01.ps1"
+  }
+]