Switch to Flakes and mkShell

flake.lock

@@ -0,0 +1,60 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1694529238,
+        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1695272228,
+        "narHash": "sha256-4uw2OdJPVyjdB+xcDst9SecrNIpxKXJ2usN3M5HVa7o=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "55ac2a9d2024f15c56adf20da505b29659911da8",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "ref": "nixos-23.05",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

@@ -0,0 +1,13 @@
+{
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-23.05";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system: {
+      devShells.default = import ./shell.nix {
+        pkgs = nixpkgs.legacyPackages.${system};
+      };
+    });
+}

shell.nix

@@ -1,18 +1,14 @@
 { pkgs ? import <nixpkgs> {} }:
 
-(
-  pkgs.buildFHSUserEnv {
-    name = "openrs2-natives";
-    targetPkgs = pkgs: (
-      with pkgs; [
-        gcc
-        jdk11
-        libglvnd.dev
-        maven
-        xorg.libX11.dev
-        xorg.libXt.dev
-        xorg.xorgproto
-      ]
-    );
-  }
-).env
+pkgs.mkShell {
+  name = "openrs2-natives";
+  packages = with pkgs; [
+    gcc
+    jdk11
+    libglvnd.dev
+    maven
+    xorg.libX11.dev
+    xorg.libXt.dev
+    xorg.xorgproto
+  ];
+}