4 files changed, 71 insertions, 32 deletions
diff --git a/2024/PHP/.envrc b/2024/PHP/.envrc
index 0a722d7..cffc922 100644
--- a/2024/PHP/.envrc
+++ b/2024/PHP/.envrc
@@ -1 +1 @@
-use nix;
+use flake . --impure
diff --git a/2024/PHP/flake.lock b/2024/PHP/flake.lock
new file mode 100644
index 0000000..b7695d9
--- /dev/null
+++ b/2024/PHP/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1741010256,
+        "narHash": "sha256-WZNlK/KX7Sni0RyqLSqLPbK8k08Kq7H7RijPJbq9KHM=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "ba487dbc9d04e0634c64e3b1f0d25839a0a68246",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/2024/PHP/flake.nix b/2024/PHP/flake.nix
new file mode 100644
index 0000000..2be5644
--- /dev/null
+++ b/2024/PHP/flake.nix
@@ -0,0 +1,43 @@
+{
+  description = "Advent of Code 2024: PHP";
+
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  };
+
+  outputs =
+    { nixpkgs, ... }:
+    let
+      pkgs = import nixpkgs {
+        config.allowUnfree = true;
+      };
+    in
+    {
+      devShells.x86_64-linux.default =
+        let
+          phpVersion = "php84";
+
+          phpPackage = pkgs.lib.attrByPath [ phpVersion ] null pkgs;
+          phpPackages = pkgs.lib.attrByPath [ "${phpVersion}Packages" ] null pkgs;
+          phpExtensions = pkgs.lib.attrByPath [ "${phpVersion}Extensions" ] null pkgs;
+        in
+        pkgs.mkShell {
+          # build tools
+          nativeBuildInputs = with pkgs; [
+            phpPackage
+            nodejs_18
+          ];
+          # dependencies
+          buildInputs = with pkgs; [
+            intelephense
+            phpunit
+            phpPackages.php-cs-fixer
+            phpPackages.phpstan
+            phpExtensions.xdebug
+
+            gh # GitHub CLI
+          ];
+        };
+
+    };
+}
diff --git a/2024/PHP/shell.nix b/2024/PHP/shell.nix
deleted file mode 100644
index 8b25fa1..0000000
--- a/2024/PHP/shell.nix
+++ /dev/null
@@ -1,31 +0,0 @@
-{ }:
-
-let
-  config = {
-    allowUnfree = true;
-  };
-  pkgs = import <nixpkgs> { inherit config; };
-
-  phpVersion = "php84";
-
-  phpPackage = pkgs.lib.attrByPath [ phpVersion ] null pkgs;
-  phpPackages = pkgs.lib.attrByPath [ "${phpVersion}Packages" ] null pkgs;
-  phpExtensions = pkgs.lib.attrByPath [ "${phpVersion}Extensions" ] null pkgs;
-in
-pkgs.mkShell {
-  # build tools
-  nativeBuildInputs = with pkgs; [
-    phpPackage
-    nodejs_18
-  ];
-  # dependencies
-  buildInputs = with pkgs; [
-    intelephense
-    phpunit
-    phpPackages.php-cs-fixer
-    phpPackages.phpstan
-    phpExtensions.xdebug
-
-    gh # GitHub CLI
-  ];
-}