diff --git a/flake.nix b/flake.nix
deleted file mode 100644
index aecb7ec..0000000
--- a/flake.nix
+++ /dev/null
@@ -1,34 +0,0 @@
-# SPDX-License-Identifier: MPL-2.0
-# SPDX-FileCopyrightText: 2026 Jonathan D.A. Jewell
-#
-# Development environment for claude-integrations.
-#
-# Estate policy is Guix primary / Nix fallback (hyperpolymath/standards).
-# This is the Nix fallback tier. It is a dev shell, not a package build:
-# it declares the toolchain needed to work on this repo, pinned to an
-# exact nixpkgs revision per the estate SHA-pinning rule.
-#
-# Packages mirror the build tooling actually present in this repo
-# (just) — not a generic estate default.
-#
-#   nix develop      # enter the shell
-#   nix flake check  # verify this file evaluates (run before committing)
-{
-  description = "claude-integrations development environment";
-
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/b134951a4c9f3c995fd7be05f3243f8ecd65d798";
-
-  outputs = { self, nixpkgs }:
-    let
-      systems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
-      forAllSystems = f:
-        nixpkgs.lib.genAttrs systems (system: f nixpkgs.legacyPackages.${system});
-    in
-    {
-      devShells = forAllSystems (pkgs: {
-        default = pkgs.mkShell {
-          packages = with pkgs; [ just ];
-        };
-      });
-    };
-}