diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
new file mode 100644
index 000000000..f4d8491cf
--- /dev/null
+++ b/.github/workflows/nix.yml
@@ -0,0 +1,43 @@
+name: Nix
+on:
+  pull_request:
+    branches:
+      - main
+jobs:
+  nix-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install Nix
+        uses: cachix/install-nix-action@v30
+        with:
+          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Run Flake Check
+        run: nix flake check --all-systems
+  nix-darwin:
+    runs-on: macos-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install Nix
+        uses: cachix/install-nix-action@v30
+        with:
+          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Prepare system files
+        run: |
+          sudo mv /etc/nix/nix.conf /etc/nix/nix.conf.before-nix-darwin || true
+          sudo mv /etc/shells /etc/shells.before-nix-darwin || true
+      - name: Run Nix Darwin
+        run: make update
+  nix-format:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install Nix
+        uses: cachix/install-nix-action@v30
+        with:
+          github_access_token: ${{ secrets.GITHUB_TOKEN }}
+      - name: Check formatting
+        run: make nix-format-check
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 000000000..093ddb0f1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,60 @@
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+*~
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~
+
+# AI
+.aider*
+
+# Nix
+.nix-defexpr
+.nix-profile
+.nix-store
+.nix-channels
+
+# Ignore 
+result
+ref
diff --git a/Makefile b/Makefile
new file mode 100644
index 000000000..325dd5b8b
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,167 @@
+##@ Variables
+
+# Detect architecture and OS
+ARCH := $(shell uname -m)
+OS := $(shell uname -s)
+
+# Nix configuration system
+NIX_SYSTEM := $(shell if [ "$(OS)" = "Darwin" ] && [ "$(ARCH)" = "arm64" ]; then \
+		echo "aarch64-darwin"; \
+	elif [ "$(OS)" = "Darwin" ] && [ "$(ARCH)" = "x86_64" ]; then \
+		echo "x86_64-darwin"; \
+	elif [ "$(OS)" = "Linux" ] && [ "$(ARCH)" = "x86_64" ]; then \
+		echo "x86_64-linux"; \
+	elif [ "$(OS)" = "Linux" ] && [ "$(ARCH)" = "aarch64" ]; then \
+		echo "aarch64-linux"; \
+	else \
+		echo "unsupported"; \
+	fi)
+NIX_CONFIG_TYPE := $(shell if [ "$(OS)" = "Darwin" ]; then \
+		echo "darwinConfigurations"; \
+	else \
+		echo "nixosConfigurations"; \
+	fi)
+NIX_ENV := $(shell . ~/.nix-profile/etc/profile.d/nix.sh 2>/dev/null || echo "not_found")
+NIX_FLAGS := --extra-experimental-features 'flakes nix-command'
+
+# User's home directory
+HOME_DIR := $(shell echo $$HOME)
+CONFIG_DIR := $(HOME_DIR)/.config
+
+##@ Help
+
+# Default target
+.PHONY: default
+default: help
+
+# Help target
+.PHONY: help
+help:
+	@echo "Available targets:"
+	@echo "  install      - Set up full environment"
+	@echo "  build        - Build Nix configuration"
+	@echo "  switch       - Apply Nix configuration"
+	@echo "  update       - Update Nix flake and configurations"
+	@echo "  format       - Format Nix files"
+	@echo "  format-check - Check Nix formatting"
+	@echo "  pr           - Create and push a PR (usage: make pr m='commit message' b='branch-name' t='PR title')"
+
+##@ General
+
+.PHONY: install
+install: nix-install
+
+.PHONY: build
+build: nix-build
+
+.PHONY: check
+check: nix-check
+
+.PHONY: format
+format: nix-format
+
+.PHONY: switch
+switch: nix-switch
+
+.PHONY: update
+update: nix-update
+
+##@ Nix
+
+.PHONY: nix-check
+nix-check:
+	@echo "Checking Nix environment..."
+	@if [ "$(NIX_ENV)" = "not_found" ]; then \
+		echo "❌ Nix environment not found. Please ensure Nix is installed and run:"; \
+		exit 1; \
+	fi
+	@echo "✅ Nix environment found!"
+
+.PHONY: nix-install
+nix-install:
+	@if [ "$(NIX_ENV)" = "not_found" ]; then \
+		echo "Installing Nix environment..."; \
+		curl -L https://nixos.org/nix/install | sh; \
+	fi
+	@echo "✅ Nix environment installed!"
+
+.PHONY: nix-update
+nix-update: nix-flake-update nix-switch
+
+.PHONY: nix-flake-update
+nix-flake-update:
+	@echo "🔄 Updating flake.lock..."
+	@if [ "$$CI" = "true" ]; then \
+		echo "Bypassing flake update in CI"; \
+	else \
+		nix flake update $(NIX_FLAGS); \
+	fi
+	@echo "✨ flake.lock updated!"
+
+.PHONY: nix-format
+nix-format:
+	@echo "Formatting Nix files..."
+	@nix fmt
+	@echo "✨ Formatting complete"
+
+.PHONY: nix-format-check
+nix-format-check:
+	@echo "Checking Nix formatting..."
+	@nix fmt -- --fail-on-change
+	@echo "✅ All Nix files are properly formatted"
+
+.PHONY: nix-build
+nix-build:
+	@echo "🔄 Building Nix configuration..."
+	@if [ "$$CI" = "true" ]; then \
+		echo "Running in CI"; \
+		nix build .#darwinConfigurations.runner.system $(NIX_FLAGS) --show-trace; \
+	else \
+		if [ "$(NIX_SYSTEM)" = "unsupported" ]; then \
+			echo "❌ Unsupported system architecture: $(OS) $(ARCH)"; \
+			exit 1; \
+		fi; \
+		nix build .#$(NIX_CONFIG_TYPE).$(NIX_SYSTEM).system $(NIX_FLAGS) --show-trace; \
+	fi
+	@echo "✅ Nix configuration built successfully!"
+
+.PHONY: nix-switch
+nix-switch: nix-build
+	@echo "🔄 Applying Nix configuration..."
+	@if [ "$$CI" = "true" ]; then \
+		./result/sw/bin/darwin-rebuild switch --flake .#runner; \
+	elif [ "$(OS)" = "Darwin" ]; then \
+		./result/sw/bin/darwin-rebuild switch --flake .#$(NIX_SYSTEM); \
+	else \
+		sudo nixos-rebuild switch --flake .#$(NIX_SYSTEM); \
+	fi
+	@echo "✨ Configuration applied successfully!"
+
+##@ GitHub
+
+.PHONY: pr
+pr:
+	@if ! command -v gh &> /dev/null; then \
+		echo "❌ GitHub CLI not found. Please run 'make install' to install it."; \
+		exit 1; \
+	fi
+	@if [ -z "$(b)" ]; then \
+		echo "❌ Branch name required. Usage: make pr m='commit message' b='branch-name' t='PR title'"; \
+		exit 1; \
+	fi
+	@if [ -z "$(m)" ]; then \
+		echo "❌ Commit message required. Usage: make pr m='commit message' b='branch-name' t='PR title'"; \
+		exit 1; \
+	fi
+	@echo "Creating PR branch and pushing changes..."
+	@git checkout -b feature/$(b)
+	@git add .
+	@git commit -m "$(m)"
+	@git push -u origin feature/$(b)
+	@echo "Creating PR..."
+	@if [ -z "$(t)" ]; then \
+		gh pr create --fill; \
+	else \
+		gh pr create --title "$(t)" --body "$(m)"; \
+	fi
+	@echo "✨ PR created successfully!"
diff --git a/README.md b/README.md
index 27ef622f0..be51c9c1a 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,187 @@
-# dotfiles
\ No newline at end of file
+# Dotfiles
+
+Cross-platform dotfiles management using Nix Home Manager for macOS and Ubuntu.
+
+## Features
+
+- Cross-platform configuration management using Nix Home Manager
+- Consistent development environment across macOS and Ubuntu
+- Declarative configuration for reproducible setups
+- Version controlled dotfiles and package management
+- Automated installation and setup process
+
+## Prerequisites
+
+- Nix Package Manager
+- Git
+- Home Manager
+
+## Installation
+
+### 1. Install Nix Package Manager
+
+#### macOS
+```bash
+sh <(curl -L https://nixos.org/nix/install) --daemon
+```
+
+#### Ubuntu
+```bash
+sh <(curl -L https://nixos.org/nix/install) --daemon
+```
+
+### 2. Install Home Manager
+
+After installing Nix, set up your environment:
+
+```bash
+# Source Nix environment (add this to your shell's rc file)
+source ~/.nix-profile/etc/profile.d/nix.sh
+```
+
+Home Manager will be automatically installed when needed.
+
+### 3. Clone and Setup
+
+1. Clone this repository:
+```bash
+git clone https://github.com/shunkakinoki/dotfiles.git ~/.dotfiles
+cd ~/.dotfiles
+```
+
+2. Apply the Home Manager configuration:
+```bash
+# Ensure Nix environment is sourced
+source ~/.nix-profile/etc/profile.d/nix.sh
+
+# Apply configuration (will install Home Manager if needed)
+make switch
+```
+
+## Synchronization
+
+To sync changes across machines:
+
+1. On the source machine:
+```bash
+git add .
+git commit -m "Update configuration"
+git push
+```
+
+2. On other machines:
+```bash
+cd ~/.dotfiles
+git pull
+home-manager switch
+```
+
+## Included Tools and Configurations
+
+- Shell: Zsh with Oh My Zsh
+- Editor: Neovim with essential plugins
+- Version Control: Git with sensible defaults
+- Terminal Multiplexer: Tmux
+- Development Tools:
+  - ripgrep
+  - fd
+  - fzf
+  - jq
+  - tree
+- Programming Languages:
+  - Node.js
+  - Python 3
+  - Rust
+
+## Troubleshooting
+
+If you encounter issues:
+
+1. Ensure Nix and Home Manager are properly installed:
+```bash
+nix --version
+home-manager --version
+```
+
+2. Check for configuration errors:
+```bash
+home-manager build
+```
+
+3. View Home Manager logs:
+```bash
+journalctl -u home-manager-shunkakinoki
+```
+
+## License
+
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
+
+## Contributing
+
+You can contribute in two ways:
+
+### Quick PR Creation
+
+Use our one-line command to create PRs directly:
+```bash
+# Basic usage (auto-fills PR title and body from commit)
+make pr m='Your commit message' b='your-branch-name'
+
+# With custom PR title
+make pr m='Your commit message' b='your-branch-name' t='Your PR title'
+```
+
+For example:
+```bash
+# Auto-filled PR title/body
+make pr m='Add new zsh aliases' b='zsh-aliases'
+
+# Custom PR title
+make pr m='Add new zsh aliases' b='zsh-aliases' t='feat: Enhanced ZSH Configuration'
+```
+
+This will:
+1. Create a new feature branch
+2. Add all changes
+3. Commit with your message
+4. Push to GitHub
+5. Create a PR using GitHub CLI
+   - If no title (`t`) is provided, it will auto-fill from the commit
+   - If title is provided, it will use that with the commit message as the PR body
+
+Prerequisites:
+- GitHub CLI is included in the Nix configuration
+- Authenticate with GitHub:
+```bash
+gh auth login
+```
+
+### Manual Process
+
+1. Fork the repository
+2. Create your feature branch (`git checkout -b feature/amazing-feature`)
+3. Commit your changes (`git commit -m 'Add some amazing feature'`)
+4. Push to the branch (`git push origin feature/amazing-feature`)
+5. Open a Pull Request
+
+### Before Submitting
+
+Make sure to:
+- Run `make format` to format Nix files
+- Run `make format-check` to verify formatting
+- Test your changes with `make switch`
+
+## Acknowledgments
+
+- [Nix](https://nixos.org/)
+- [Home Manager](https://github.com/nix-community/home-manager)
+- [Oh My Zsh](https://ohmyz.sh/)
+
+## Development Workflow
+
+This repository follows a PR-based workflow to ensure configuration stability.
+
+### Code Formatting
+
+All Nix files must be formatted using `nixpkgs-fmt`
\ No newline at end of file
diff --git a/REFERENCES.md b/REFERENCES.md
new file mode 100644
index 000000000..747746b4c
--- /dev/null
+++ b/REFERENCES.md
@@ -0,0 +1,6 @@
+# References
+
+- Mitchell Hashimoto's [nixos-config](https://github.com/mitchellh/nixos-config)
+- Dustin Lyons' [nixos-config](https://github.com/dustinlyons/nixos-config)
+- takeokunn's [nix-configuration](https://github.com/takeokunn/nixos-configuration) 
+- Carlos's [dotfiles](https://github.com/caarlos0/dotfiles)
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 000000000..dc0c85115
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,138 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1738453229,
+        "narHash": "sha256-7H9XgNiGLKN1G1CgRh0vUL4AheZSYzPm+zmZ7vxbJdo=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "32ea77a06711b758da0ad9bd6a844c5740a87abd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "type": "github"
+      }
+    },
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1739381933,
+        "narHash": "sha256-4gvobxITgcrNGfwsVG5a46QzQCX89btIYw23p0ilbcc=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "15b59d4191b993ebdfcb1f61b834fced217882ba",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
+    "nix-darwin": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1739302241,
+        "narHash": "sha256-NXQXFU6HOschZ+8ZKrNOlwlHelez8vPl+dCiUaJ82/U=",
+        "owner": "LnL7",
+        "repo": "nix-darwin",
+        "rev": "a6746213b138fe7add88b19bafacd446de574ca7",
+        "type": "github"
+      },
+      "original": {
+        "owner": "LnL7",
+        "repo": "nix-darwin",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1739138025,
+        "narHash": "sha256-M4ilIfGxzbBZuURokv24aqJTbdjPA9K+DtKUzrJaES4=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b2243f41e860ac85c0b446eadc6930359b294e79",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "lastModified": 1738452942,
+        "narHash": "sha256-vJzFZGaCpnmo7I6i416HaBLpC+hvcURh/BQwROcGIp8=",
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/072a6db25e947df2f31aab9eccd0ab75d5b2da11.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://github.com/NixOS/nixpkgs/archive/072a6db25e947df2f31aab9eccd0ab75d5b2da11.tar.gz"
+      }
+    },
+    "nixpkgs-stable": {
+      "locked": {
+        "lastModified": 1735563628,
+        "narHash": "sha256-OnSAY7XDSx7CtDoqNh8jwVwh4xNL/2HaJxGjryLWzX8=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "b134951a4c9f3c995fd7be05f3243f8ecd65d798",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-24.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "home-manager": "home-manager",
+        "nix-darwin": "nix-darwin",
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-stable": "nixpkgs-stable",
+        "treefmt-nix": "treefmt-nix"
+      }
+    },
+    "treefmt-nix": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1738953846,
+        "narHash": "sha256-yrK3Hjcr8F7qS/j2F+r7C7o010eVWWlm4T1PrbKBOxQ=",
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "rev": "4f09b473c936d41582dd744e19f34ec27592c5fd",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "treefmt-nix",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 000000000..2051d2aaf
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,67 @@
+{
+  description = "Shun Kakinoki's Nix Configuration";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    nixpkgs-stable.url = "github:nixos/nixpkgs/nixos-24.05";
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    nix-darwin = {
+      url = "github:LnL7/nix-darwin";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+    flake-parts.url = "github:hercules-ci/flake-parts";
+    treefmt-nix = {
+      url = "github:numtide/treefmt-nix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs =
+    {
+      flake-parts,
+      treefmt-nix,
+      ...
+    }@inputs:
+
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      systems = [
+        "aarch64-darwin"
+        "aarch64-linux"
+        "x86_64-linux"
+      ];
+
+      imports = [ treefmt-nix.flakeModule ];
+
+      flake = {
+        darwinConfigurations = {
+          aarch64-darwin = import ./hosts/darwin { inherit inputs; };
+          runner = import ./hosts/darwin {
+            inherit inputs;
+            hostname = "runner";
+            username = "runner";
+          };
+        };
+      };
+
+      perSystem =
+        { ... }:
+        {
+          treefmt = {
+            projectRootFile = "flake.nix";
+            programs = {
+              actionlint.enable = true;
+              biome.enable = true;
+              jsonfmt.enable = true;
+              nixfmt.enable = true;
+              shfmt.enable = true;
+              stylua.enable = true;
+              taplo.enable = true;
+              yamlfmt.enable = true;
+            };
+          };
+        };
+    };
+}
diff --git a/home-manager/default.nix b/home-manager/default.nix
new file mode 100644
index 000000000..d664b800b
--- /dev/null
+++ b/home-manager/default.nix
@@ -0,0 +1,51 @@
+{
+  system,
+  nixpkgs,
+  lib ? nixpkgs.lib,
+}:
+let
+  # nvfetcher
+  # sources = pkgs.callPackage ../_sources/generated.nix { };
+
+  # packages
+  overlay = import ./overlay;
+  pkgs = import nixpkgs {
+    inherit system;
+    config.allowUnfree = true;
+    overlays = overlay;
+  };
+  packages = import ./packages { inherit pkgs; };
+
+  # misc
+  misc = import ./misc;
+
+  # modules
+  modules = import ./modules;
+
+  # Import programs
+  programs = import ./programs {
+    inherit lib pkgs;
+    sources = { };
+  };
+
+  # services
+  services = import ./services {
+    inherit pkgs;
+  };
+
+in
+{
+  imports = misc ++ modules ++ programs ++ services;
+
+  home.stateVersion = "24.11";
+  home.packages = packages;
+
+  accounts.email.accounts = {
+    Gmail = {
+      primary = true;
+      flavor = "gmail.com";
+      realName = "Shun Kakinoki";
+      address = "shunkakinoki@gmail.com";
+    };
+  };
+}
diff --git a/home-manager/misc/default.nix b/home-manager/misc/default.nix
new file mode 100644
index 000000000..2bc15e204
--- /dev/null
+++ b/home-manager/misc/default.nix
@@ -0,0 +1,3 @@
+[
+  ./nix
+]
diff --git a/home-manager/misc/nix/default.nix b/home-manager/misc/nix/default.nix
new file mode 100644
index 000000000..12e689e73
--- /dev/null
+++ b/home-manager/misc/nix/default.nix
@@ -0,0 +1,8 @@
+{
+  nix = {
+    enable = true;
+    extraOptions = ''
+      experimental-features = nix-command flakes
+    '';
+  };
+}
diff --git a/home-manager/modules/default.nix b/home-manager/modules/default.nix
new file mode 100644
index 000000000..2a5648efd
--- /dev/null
+++ b/home-manager/modules/default.nix
@@ -0,0 +1,3 @@
+[
+  ./dust
+]
diff --git a/home-manager/modules/dust/default.nix b/home-manager/modules/dust/default.nix
new file mode 100644
index 000000000..dd45e785e
--- /dev/null
+++ b/home-manager/modules/dust/default.nix
@@ -0,0 +1,25 @@
+{
+  pkgs,
+  lib,
+  config,
+  ...
+}:
+let
+  cfg = config.programs.dust;
+in
+with lib;
+{
+  options.programs.dust = {
+    enable = mkEnableOption "A more intuitive version of du in rust";
+    package = mkPackageOption pkgs "du-dust" { };
+    config = mkOption {
+      type = types.lines;
+      default = "";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = [ cfg.package ];
+    xdg.configFile."dust/config.toml".text = cfg.config;
+  };
+}
diff --git a/home-manager/overlay/default.nix b/home-manager/overlay/default.nix
new file mode 100644
index 000000000..1e3ec7217
--- /dev/null
+++ b/home-manager/overlay/default.nix
@@ -0,0 +1 @@
+[ ]
diff --git a/home-manager/packages/default.nix b/home-manager/packages/default.nix
new file mode 100644
index 000000000..841404ae9
--- /dev/null
+++ b/home-manager/packages/default.nix
@@ -0,0 +1,11 @@
+{ pkgs }:
+with pkgs;
+[
+  dust
+  gh
+  ghq
+  go
+  neofetch
+  ollama
+  rustup
+]
diff --git a/home-manager/programs/default.nix b/home-manager/programs/default.nix
new file mode 100644
index 000000000..2c40e9f5f
--- /dev/null
+++ b/home-manager/programs/default.nix
@@ -0,0 +1,17 @@
+{
+  lib,
+  pkgs,
+  sources,
+}:
+let
+  dust = import ./dust;
+  gh = import ./gh;
+  starship = import ./starship;
+  zsh = import ./zsh { inherit lib pkgs; };
+in
+[
+  dust
+  gh
+  starship
+  zsh
+]
diff --git a/home-manager/programs/dust/default.nix b/home-manager/programs/dust/default.nix
new file mode 100644
index 000000000..6c4a0b44c
--- /dev/null
+++ b/home-manager/programs/dust/default.nix
@@ -0,0 +1,5 @@
+{
+  programs.gh = {
+    enable = true;
+  };
+}
diff --git a/home-manager/programs/gh/default.nix b/home-manager/programs/gh/default.nix
new file mode 100644
index 000000000..ef9521319
--- /dev/null
+++ b/home-manager/programs/gh/default.nix
@@ -0,0 +1,9 @@
+{
+  programs.gh = {
+    enable = true;
+    settings = {
+      git_protocol = "ssh";
+      prompt = "enabled";
+    };
+  };
+}
diff --git a/home-manager/programs/starship/default.nix b/home-manager/programs/starship/default.nix
new file mode 100644
index 000000000..0432971bd
--- /dev/null
+++ b/home-manager/programs/starship/default.nix
@@ -0,0 +1,6 @@
+{
+  programs.starship = {
+    enable = true;
+    enableZshIntegration = true;
+  };
+}
diff --git a/home-manager/programs/zsh/default.nix b/home-manager/programs/zsh/default.nix
new file mode 100644
index 000000000..17e1892fa
--- /dev/null
+++ b/home-manager/programs/zsh/default.nix
@@ -0,0 +1,42 @@
+{ lib, pkgs, ... }:
+
+{
+  programs.zsh = {
+    enable = true;
+    enableCompletion = true;
+    autosuggestion.enable = true;
+    syntaxHighlighting.enable = true;
+    historySubstringSearch.enable = true;
+
+    history = {
+      size = 50000;
+      save = 50000;
+      path = "$HOME/.zsh_history";
+      ignoreDups = true;
+      share = true;
+      extended = true;
+    };
+
+    initExtra = ''
+      # Initialize Starship
+      eval "$(starship init zsh)"
+
+      eval "$(sheldon source)"
+      eval "$(direnv hook zsh)"
+      eval "$(/opt/homebrew/bin/brew shellenv)"
+      source "$HOME/.rye/env"
+
+      # FNM (Fast Node Manager) configuration
+      export FNM_DIR="$HOME/Library/Application Support/fnm"
+      export FNM_COREPACK_ENABLED="false"
+      export FNM_ARCH="arm64"
+      export FNM_RESOLVE_ENGINES="false"
+      export FNM_LOGLEVEL="info"
+      export FNM_NODE_DIST_MIRROR="https://nodejs.org/dist"
+      export FNM_VERSION_FILE_STRATEGY="local"
+
+      # OpenRouter API Key
+      export OPENROUTER_API_KEY_AVANTE=$(security find-generic-password -a "avante" -s "shunkakinoki" -w)
+    '';
+  };
+}
diff --git a/home-manager/services/default.nix b/home-manager/services/default.nix
new file mode 100644
index 000000000..7a79ac474
--- /dev/null
+++ b/home-manager/services/default.nix
@@ -0,0 +1,7 @@
+{ pkgs }:
+let
+  ollamaModule = import ./ollama { inherit pkgs; };
+in
+[
+  ollamaModule
+]
diff --git a/home-manager/services/ollama/default.nix b/home-manager/services/ollama/default.nix
new file mode 100644
index 000000000..e31b64bf9
--- /dev/null
+++ b/home-manager/services/ollama/default.nix
@@ -0,0 +1,6 @@
+{ pkgs }:
+{
+  services.ollama = {
+    enable = pkgs.stdenv.isLinux;
+  };
+}
diff --git a/hosts/darwin/default.nix b/hosts/darwin/default.nix
new file mode 100644
index 000000000..d113c41fe
--- /dev/null
+++ b/hosts/darwin/default.nix
@@ -0,0 +1,34 @@
+{
+  inputs,
+  username ? "shunkakinoki",
+  hostname ? "aarch64-darwin",
+}:
+let
+  inherit (inputs) nix-darwin home-manager;
+  system = "aarch64-darwin";
+  configuration =
+    { ... }:
+    {
+      networking.hostName = hostname;
+      users.users.${username}.home = "/Users/${username}";
+    };
+in
+nix-darwin.lib.darwinSystem {
+  inherit system;
+  inherit (inputs.nixpkgs) lib;
+  specialArgs = {
+    inherit username;
+  };
+  modules = [
+    configuration
+    ../../nix-darwin
+    home-manager.darwinModules.home-manager
+    {
+      home-manager.useUserPackages = true;
+      home-manager.users."${username}" = import ../../home-manager {
+        inherit system;
+        nixpkgs = inputs.nixpkgs;
+      };
+    }
+  ];
+}
diff --git a/install.sh b/install.sh
new file mode 100755
index 000000000..78beff289
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+# Exit on error
+set -e
+
+# Detect OS
+if [[ $OSTYPE == "darwin"* ]]; then
+  OS="macos"
+elif [[ $OSTYPE == "linux-gnu"* ]]; then
+  OS="linux"
+else
+  echo "Unsupported operating system: $OSTYPE"
+  exit 1
+fi
+
+# Install Nix if not already installed
+if ! command -v nix &>/dev/null; then
+  echo "Installing Nix..."
+  if [[ $OS == "macos" ]]; then
+    sh <(curl -L https://nixos.org/nix/install) --daemon
+  else
+    sh <(curl -L https://nixos.org/nix/install) --daemon
+  fi
+fi
diff --git a/nix-darwin/config/dock.nix b/nix-darwin/config/dock.nix
new file mode 100644
index 000000000..a4d164b1e
--- /dev/null
+++ b/nix-darwin/config/dock.nix
@@ -0,0 +1,31 @@
+{
+  imports = [
+    ./dock
+  ];
+
+  local = {
+    dock.enable = true;
+    dock.entries = [
+      { path = "/Applications/Slack.app/"; }
+      { path = "/System/Applications/Messages.app/"; }
+      { path = "/System/Applications/Facetime.app/"; }
+      { path = "/Applications/Telegram.app/"; }
+      { path = "/System/Applications/Music.app/"; }
+      { path = "/System/Applications/News.app/"; }
+      { path = "/System/Applications/Photos.app/"; }
+      { path = "/System/Applications/Photo Booth.app/"; }
+      { path = "/System/Applications/TV.app/"; }
+      { path = "/System/Applications/Home.app/"; }
+      {
+        path = "${config.users.users.${user}.home}/.local/share/";
+        section = "others";
+        options = "--sort name --view grid --display folder";
+      }
+      {
+        path = "${config.users.users.${user}.home}/.local/share/downloads";
+        section = "others";
+        options = "--sort name --view grid --display stack";
+      }
+    ];
+  };
+}
diff --git a/nix-darwin/config/fonts.nix b/nix-darwin/config/fonts.nix
new file mode 100644
index 000000000..3b71fdff5
--- /dev/null
+++ b/nix-darwin/config/fonts.nix
@@ -0,0 +1,9 @@
+{ pkgs }:
+{
+  fonts = {
+    packages = [
+      pkgs.fira-code
+      pkgs.jetbrains-mono
+    ];
+  };
+}
diff --git a/nix-darwin/config/homebrew.nix b/nix-darwin/config/homebrew.nix
new file mode 100644
index 000000000..d4757759b
--- /dev/null
+++ b/nix-darwin/config/homebrew.nix
@@ -0,0 +1,45 @@
+{
+  homebrew = {
+    enable = true;
+    onActivation = {
+      autoUpdate = true;
+      upgrade = true;
+      cleanup = "zap";
+      extraFlags = [ "--force" ];
+    };
+    taps = [
+      "homebrew/cask"
+      "homebrew/services"
+    ];
+    brews = [
+      "direnv"
+      "gnupg"
+      "mas"
+      "pinentry-mac"
+      "sheldon"
+    ];
+    casks = [
+      "chatgpt"
+      "cursor"
+      "discord"
+      "docker"
+      "figma"
+      "ghostty"
+      "google-chrome"
+      "google-drive"
+      "hammerspoon"
+      "linear-linear"
+      "notion"
+      "raycast"
+      "screen-studio"
+      "sf-symbols"
+      "slack"
+      "visual-studio-code"
+      "zoom"
+    ];
+    masApps = {
+      "Notability" = 360593530;
+      "Xcode" = 497799835;
+    };
+  };
+}
diff --git a/nix-darwin/config/launchd.nix b/nix-darwin/config/launchd.nix
new file mode 100644
index 000000000..65922631d
--- /dev/null
+++ b/nix-darwin/config/launchd.nix
@@ -0,0 +1,14 @@
+{ pkgs }:
+{
+  launchd.agents.ollama = {
+    serviceConfig = {
+      ProgramArguments = [
+        "${pkgs.ollama}/bin/ollama"
+        "serve"
+      ];
+      KeepAlive = true;
+      RunAtLoad = true;
+      EnvironmentVariables.OLLAMA_HOST = "0.0.0.0";
+    };
+  };
+}
diff --git a/nix-darwin/config/networking.nix b/nix-darwin/config/networking.nix
new file mode 100644
index 000000000..9319bb717
--- /dev/null
+++ b/nix-darwin/config/networking.nix
@@ -0,0 +1,14 @@
+{
+  networking = {
+    knownNetworkServices = [
+      "Wi-Fi"
+      "Ethernet Adaptor"
+      "Thunderbolt Ethernet"
+    ];
+    dns = [
+      "8.8.8.8"
+      "8.8.4.4"
+      "1.1.1.1"
+    ];
+  };
+}
diff --git a/nix-darwin/config/nix.nix b/nix-darwin/config/nix.nix
new file mode 100644
index 000000000..6ad3171ea
--- /dev/null
+++ b/nix-darwin/config/nix.nix
@@ -0,0 +1,9 @@
+{
+  nix = {
+    optimise.automatic = true;
+    settings = {
+      experimental-features = "nix-command flakes";
+      max-jobs = 8;
+    };
+  };
+}
diff --git a/nix-darwin/config/security.nix b/nix-darwin/config/security.nix
new file mode 100644
index 000000000..cf0471d38
--- /dev/null
+++ b/nix-darwin/config/security.nix
@@ -0,0 +1,9 @@
+{ username }:
+{
+  security = {
+    sudo.extraConfig = ''
+      ${username} ALL=NOPASSWD: ALL
+    '';
+    pam.enableSudoTouchIdAuth = true;
+  };
+}
diff --git a/nix-darwin/config/system.nix b/nix-darwin/config/system.nix
new file mode 100644
index 000000000..5c8374e35
--- /dev/null
+++ b/nix-darwin/config/system.nix
@@ -0,0 +1,79 @@
+{ pkgs }:
+{
+  ids.gids.nixbld = 350;
+  system = {
+    stateVersion = 4;
+    defaults = {
+      SoftwareUpdate.AutomaticallyInstallMacOSUpdates = true;
+      LaunchServices.LSQuarantine = false;
+      CustomSystemPreferences = {
+        "com.apple.screensaver" = {
+          askForPassword = true;
+          askForPasswordDelay = 0;
+        };
+        "com.apple.screencapture" = {
+          location = "~/Desktop";
+          type = "png";
+        };
+      };
+      NSGlobalDomain = {
+        AppleShowAllExtensions = true;
+        InitialKeyRepeat = 15;
+        KeyRepeat = 2;
+        NSAutomaticCapitalizationEnabled = false;
+        NSAutomaticSpellingCorrectionEnabled = false;
+        NSNavPanelExpandedStateForSaveMode = true;
+        NSNavPanelExpandedStateForSaveMode2 = true;
+        PMPrintingExpandedStateForPrint = true;
+        PMPrintingExpandedStateForPrint2 = true;
+        "com.apple.swipescrolldirection" = true;
+        "com.apple.keyboard.fnState" = false;
+      };
+      finder = {
+        AppleShowAllExtensions = true;
+        AppleShowAllFiles = true;
+        FXEnableExtensionChangeWarning = false;
+        _FXShowPosixPathInTitle = true;
+        CreateDesktop = false;
+        QuitMenuItem = true;
+        ShowPathbar = true;
+        ShowStatusBar = true;
+      };
+      dock = {
+        autohide = true;
+        persistent-apps = [
+          "/System/Applications/Reminders.app"
+          "/System/Applications/Notes.app"
+          "/System/Applications/Calendar.app"
+          "/Applications/Chrome.app"
+          "/Applications/Ghostty.app"
+          "/System/Applications/Mail.app"
+          "/System/Applications/Messages.app"
+          "/Applications/Discord.app"
+          "/System/Applications/Music.app"
+        ];
+        orientation = "bottom";
+        showhidden = true;
+        mru-spaces = false;
+        minimize-to-application = true;
+        show-recents = false;
+        static-only = true;
+        tilesize = 48;
+        magnification = false;
+      };
+      trackpad = {
+        Clicking = true;
+        Dragging = true;
+        TrackpadRightClick = true;
+        TrackpadThreeFingerDrag = false;
+        ActuationStrength = 0;
+        FirstClickThreshold = 0;
+        SecondClickThreshold = 0;
+        TrackpadThreeFingerTapGesture = 2;
+      };
+    };
+    # activationScripts.extraActivation.text = ''
+    #   softwareupdate --all --install
+    # '';
+  };
+}
diff --git a/nix-darwin/config/time.nix b/nix-darwin/config/time.nix
new file mode 100644
index 000000000..700b74bf2
--- /dev/null
+++ b/nix-darwin/config/time.nix
@@ -0,0 +1,3 @@
+{
+  # time.timeZone = "America/San_Francisco";
+}
diff --git a/nix-darwin/default.nix b/nix-darwin/default.nix
new file mode 100644
index 000000000..6efa2133d
--- /dev/null
+++ b/nix-darwin/default.nix
@@ -0,0 +1,29 @@
+{
+  pkgs,
+  lib,
+  username,
+  ...
+}:
+let
+  fonts = import ./config/fonts.nix { inherit pkgs; };
+  # homebrew = import ./config/homebrew.nix;
+  launchd = import ./config/launchd.nix { inherit pkgs; };
+  networking = import ./config/networking.nix;
+  nix = import ./config/nix.nix;
+  security = import ./config/security.nix { inherit username; };
+  system = import ./config/system.nix { inherit pkgs; };
+  time = import ./config/time.nix;
+
+in
+{
+  imports = [
+    fonts
+    # homebrew
+    launchd
+    networking
+    nix
+    security
+    system
+    time
+  ];
+}