diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..c6dd147
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1785975029,
+        "narHash": "sha256-X44cn5rzytELc3NNoQsh0aLkjWA/QzPfc6HPQmsG3sU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "70ce234312134a463ba7728e94da2486a1d237ac",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..2dc0d71
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,40 @@
+{
+  description = "Fixing OptiFine, until something better comes.";
+
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
+    system = "x86_64-linux";
+    pkgs = nixpkgs.legacyPackages.${system};
+    inherit (pkgs) lib;
+
+    gradleJdk = pkgs.temurin-bin-26;
+    gameJdk = pkgs.temurin-bin-8;
+  in {
+    devShells.${system}.default = pkgs.mkShell {
+      name = "OptiNotFine";
+
+      packages = [gradleJdk gameJdk pkgs.xrandr];
+
+      env = {
+        GRADLE_OPTS = toString [
+          "-Dorg.gradle.java.installations.paths=${gradleJdk},${gameJdk}"
+          "-Dorg.gradle.java.installations.auto-detect=false"
+          "-Dorg.gradle.java.installations.auto-download=false"
+        ];
+
+        LD_LIBRARY_PATH = lib.makeLibraryPath (with pkgs; [
+          libXcursor
+          libXrandr
+          libXxf86vm
+          libGL
+          openal
+          libpulseaudio
+        ]);
+      };
+    };
+  };
+}