diff --git a/nix-darwin/flake.lock b/nix-darwin/flake.lock
new file mode 100644
index 00000000..2551a964
--- /dev/null
+++ b/nix-darwin/flake.lock
@@ -0,0 +1,355 @@
+{
+  "nodes": {
+    "agenix": {
+      "inputs": {
+        "darwin": "darwin",
+        "home-manager": "home-manager",
+        "nixpkgs": [
+          "railbird-secrets",
+          "nixpkgs"
+        ],
+        "systems": "systems_2"
+      },
+      "locked": {
+        "lastModified": 1707830867,
+        "narHash": "sha256-PAdwm5QqdlwIqGrfzzvzZubM+FXtilekQ/FA0cI49/o=",
+        "owner": "ryantm",
+        "repo": "agenix",
+        "rev": "8cb01a0e717311680e0cbca06a76cbceba6f3ed6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "ryantm",
+        "repo": "agenix",
+        "type": "github"
+      }
+    },
+    "brew-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1718075954,
+        "narHash": "sha256-4TeUhv5VLEufP+Z/NkKnUk4NUaf59cMsj6NvsVbE+8w=",
+        "owner": "Homebrew",
+        "repo": "brew",
+        "rev": "3f08c75e7b950d4340dab462f3e7f77e8093fa2b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "Homebrew",
+        "ref": "4.3.5",
+        "repo": "brew",
+        "type": "github"
+      }
+    },
+    "darwin": {
+      "inputs": {
+        "nixpkgs": [
+          "railbird-secrets",
+          "agenix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1700795494,
+        "narHash": "sha256-gzGLZSiOhf155FW7262kdHo2YDeugp3VuIFb4/GGng0=",
+        "owner": "lnl7",
+        "repo": "nix-darwin",
+        "rev": "4b9b83d5a92e8c1fbfd8eb27eda375908c11ec4d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "lnl7",
+        "ref": "master",
+        "repo": "nix-darwin",
+        "type": "github"
+      }
+    },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1710146030,
+        "narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "b1d9ab70662946ef0850d488da1c9019f3a9752a",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "flake-utils_2": {
+      "inputs": {
+        "systems": "systems_3"
+      },
+      "locked": {
+        "lastModified": 1709126324,
+        "narHash": "sha256-q6EQdSeUZOG26WelxqkmR7kArjgWCdw5sfJVHPH/7j8=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "d465f4819400de7c8d874d50b982301f28a84605",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "railbird-secrets",
+          "agenix",
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1703113217,
+        "narHash": "sha256-7ulcXOk63TIT2lVDSExj7XzFx09LpdSAPtvgtM7yQPE=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "3bfaacf46133c037bb356193bd2f1765d9dc82c1",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
+    "homebrew-cask": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1722820732,
+        "narHash": "sha256-Y8TBYxYeUVvgYFylqBUtWxFuOZVstXW+yylI2wz2eQ0=",
+        "owner": "homebrew",
+        "repo": "homebrew-cask",
+        "rev": "9e3db5dd3130f9bf388409f39ce1706ca7b59efe",
+        "type": "github"
+      },
+      "original": {
+        "owner": "homebrew",
+        "repo": "homebrew-cask",
+        "type": "github"
+      }
+    },
+    "homebrew-core": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1722823168,
+        "narHash": "sha256-3sKYVUrhuS1fZJkrYAtB+O67dvaKyTvXXI9UqjAgI8A=",
+        "owner": "homebrew",
+        "repo": "homebrew-core",
+        "rev": "dd20841f7fe7375738708bc2f458152906a71f1d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "homebrew",
+        "repo": "homebrew-core",
+        "type": "github"
+      }
+    },
+    "nix-darwin": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1722609272,
+        "narHash": "sha256-Kkb+ULEHVmk07AX+OhwyofFxBDpw+2WvsXguUS2m6e4=",
+        "owner": "LnL7",
+        "repo": "nix-darwin",
+        "rev": "f7142b8024d6b70c66fd646e1d099d3aa5bfec49",
+        "type": "github"
+      },
+      "original": {
+        "owner": "LnL7",
+        "repo": "nix-darwin",
+        "type": "github"
+      }
+    },
+    "nix-darwin_2": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      },
+      "locked": {
+        "lastModified": 1716329735,
+        "narHash": "sha256-ap51w+VqG21vuzyQ04WrhI2YbWHd3UGz0e7dc/QQmoA=",
+        "owner": "LnL7",
+        "repo": "nix-darwin",
+        "rev": "eac4f25028c1975a939c8f8fba95c12f8a25e01c",
+        "type": "github"
+      },
+      "original": {
+        "owner": "LnL7",
+        "repo": "nix-darwin",
+        "type": "github"
+      }
+    },
+    "nix-homebrew": {
+      "inputs": {
+        "brew-src": "brew-src",
+        "flake-utils": "flake-utils",
+        "nix-darwin": "nix-darwin_2",
+        "nixpkgs": "nixpkgs_2"
+      },
+      "locked": {
+        "lastModified": 1719720211,
+        "narHash": "sha256-FNK5ZxmNC+V/wOuioc5HqkUy0ld4eW3NqcsZHLYg9HI=",
+        "owner": "zhaofengli-wip",
+        "repo": "nix-homebrew",
+        "rev": "0afc51fd86693c73e4b60be8ed8c782c4c09b4cc",
+        "type": "github"
+      },
+      "original": {
+        "owner": "zhaofengli-wip",
+        "repo": "nix-homebrew",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1687274257,
+        "narHash": "sha256-TutzPriQcZ8FghDhEolnHcYU2oHIG5XWF+/SUBNnAOE=",
+        "path": "/nix/store/22qgs3skscd9bmrxv9xv4q5d4wwm5ppx-source",
+        "rev": "2c9ecd1f0400076a4d6b2193ad468ff0a7e7fdc5",
+        "type": "path"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1716330097,
+        "narHash": "sha256-8BO3B7e3BiyIDsaKA0tY8O88rClYRTjvAp66y+VBUeU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "5710852ba686cc1fd0d3b8e22b3117d43ba374c2",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_3": {
+      "locked": {
+        "lastModified": 1722640603,
+        "narHash": "sha256-TcXjLVNd3VeH1qKPH335Tc4RbFDbZQX+d7rqnDUoRaY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "81610abc161d4021b29199aa464d6a1a521e0cc9",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_4": {
+      "locked": {
+        "lastModified": 1709703039,
+        "narHash": "sha256-6hqgQ8OK6gsMu1VtcGKBxKQInRLHtzulDo9Z5jxHEFY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "9df3e30ce24fd28c7b3e2de0d986769db5d6225d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "railbird-secrets": {
+      "inputs": {
+        "agenix": "agenix",
+        "flake-utils": "flake-utils_2",
+        "nixpkgs": "nixpkgs_4"
+      },
+      "locked": {
+        "lastModified": 1722639965,
+        "narHash": "sha256-ZRe5Z5s/UNaXI2piyncQ3YrFl5q3GryZAfFTyeJ/vhM=",
+        "ref": "refs/heads/master",
+        "rev": "9a92b83c3ad376620db3556c33e51a4300c5badd",
+        "revCount": 73,
+        "type": "git",
+        "url": "ssh://gitea@dev.railbird.ai:1123/railbird/secrets-flake.git"
+      },
+      "original": {
+        "type": "git",
+        "url": "ssh://gitea@dev.railbird.ai:1123/railbird/secrets-flake.git"
+      }
+    },
+    "root": {
+      "inputs": {
+        "homebrew-cask": "homebrew-cask",
+        "homebrew-core": "homebrew-core",
+        "nix-darwin": "nix-darwin",
+        "nix-homebrew": "nix-homebrew",
+        "nixpkgs": "nixpkgs_3",
+        "railbird-secrets": "railbird-secrets"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_2": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    },
+    "systems_3": {
+      "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
+}
diff --git a/nix-darwin/flake.nix b/nix-darwin/flake.nix
index 25528a17..8f5c7ff5 100644
--- a/nix-darwin/flake.nix
+++ b/nix-darwin/flake.nix
@@ -25,8 +25,6 @@
   outputs = inputs@{ self, nix-darwin, nixpkgs, ... }:
   let
     configuration = { pkgs, config, ... }: {
-      # List packages installed in system profile. To search by name, run:
-      # $ nix-env -qaP | grep wget
       environment.systemPackages = with pkgs; [
 	      emacs
         slack
@@ -35,6 +33,7 @@
         yarn
         nodePackages.prettier
         vim
+        just
       ];
 
       nixpkgs.config.allowUnfree = true;
@@ -42,7 +41,6 @@
 
       # Auto upgrade nix package and the daemon service.
       services.nix-daemon.enable = true;
-      services.yabai.enable = false;
       launchd.user.envVariables.PATH = config.environment.systemPath;
 
       programs.direnv.enable = true;
@@ -52,7 +50,6 @@
 
       # Create /etc/zshrc that loads the nix-darwin environment.
       programs.zsh.enable = true;
-      program.bash.enable = true;
 
       # Set Git commit hash for darwin-version.
       system.configurationRevision = self.rev or self.dirtyRev or null;