diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..5999137
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,7 @@
+{
+  "nodes": {
+    "root": {}
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..4a66abe
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,9 @@
+{
+  description = "Development Environment for JMU's CS345";
+
+  outputs = _: {
+    nixosModules = {
+      bernstdh = import ./modules;
+    };
+  };
+}
diff --git a/modules/default.nix b/modules/default.nix
new file mode 100644
index 0000000..71a41be
--- /dev/null
+++ b/modules/default.nix
@@ -0,0 +1,48 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+let
+  inherit (pkgs.eclipses) eclipse-java eclipseWithPlugins plugins;
+
+  # Eclipse IDE for Java Developers 2024-06 R Package
+  eclipse-v2024-06 = eclipse-java.overrideAttrs (oldAttrs: rec {
+    version = "2024-06";
+    src = pkgs.fetchurl {
+      url = "https://www.eclipse.org/downloads/download.php?file=/technology/epp/downloads/release/${version}/R/eclipse-java-${version}-R-linux-gtk-x86_64.tar.gz";
+      sha256 = "1dgqbpsk6a6y3w58fkp4h5w804gcmvril6j97nkxvj96yb8f6xvx";
+    };
+  });
+
+  # The Eclipse plugin for Checkstyle v10.17.
+  checkstyle-v10-17 = plugins.buildEclipseUpdateSite {
+    name = "checkstyle-v10.17";
+    src = ../plugins/checkstyle-v10.17;
+  };
+
+  # A custom derivation of Eclipse with CS345's requirements.
+  eclipse-cs345 = eclipseWithPlugins {
+    eclipse = eclipse-v2024-06;
+    plugins = [
+      checkstyle-v10-17
+      plugins.color-theme
+    ];
+  };
+
+in
+with lib;
+{
+  options.programs.nix-jmu-cs345 = {
+    enable = mkEnableOption "nix-jmu-cs345";
+  };
+
+  config = mkIf config.programs.nix-jmu-cs345.enable {
+    environment.systemPackages = with pkgs; [
+      jdk21_headless
+      eclipse-cs345
+    ];
+  };
+}
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