Initial commit: NixOS flake with Cursor 1.3.9

- Complete NixOS configuration with Cursor AppImage
- Development environment with Node.js, Python, Rust
- Modern shell setup with Zsh and Starship
- AppImage support and desktop integration
- Comprehensive documentation and quick start guide

LICENSE

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+MIT License
+
+Copyright (c) 2025 Cursor Flake
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE. 

QUICKSTART.md

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+# Quick Start Guide
+
+Get Cursor 1.3.9 running on NixOS in minutes!
+
+## Prerequisites
+
+- NixOS system with flakes enabled
+- Git installed
+
+## Quick Setup
+
+1. **Clone and enter the repository:**
+   ```bash
+   git clone <your-repo-url>
+   cd cursor-flake
+   ```
+
+2. **Customize the username** (optional):
+   - Edit `home.nix` and change `home.username = "liam";` to your username
+   - Edit `configuration.nix` and change `users.users.liam` to your username
+
+3. **Deploy to your system:**
+   ```bash
+   sudo nixos-rebuild switch --flake .#cursor-system
+   ```
+
+4. **Launch Cursor:**
+   - From applications menu: Look for "Cursor"
+   - From terminal: Run `cursor`
+
+## What You Get
+
+- ✅ **Cursor 1.3.9**: Latest AI-first code editor
+- ✅ **Development Environment**: Node.js, Python, Rust, Git
+- ✅ **Modern Shell**: Zsh with Starship prompt
+- ✅ **CLI Tools**: ripgrep, fd, bat, eza, fzf, tmux
+- ✅ **Desktop Integration**: GNOME with proper launcher
+
+## Testing
+
+To test before deploying:
+```bash
+# Build the system (takes a few minutes)
+nix build .#nixosConfigurations.cursor-system.config.system.build.vm
+
+# Run in VM (optional)
+./result/bin/run-cursor-system-vm
+```
+
+## Troubleshooting
+
+- **Cursor won't start**: Make sure you have FUSE support enabled
+- **Permission issues**: Check that your user is in the correct groups
+- **Build fails**: Run `nix flake check` to validate the configuration
+
+## Next Steps
+
+- Customize your development environment in `home.nix`
+- Add your own packages to the configuration
+- Check the full README.md for detailed documentation 

README.md

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+# Cursor Flake
+
+A NixOS flake that provides a complete development environment with Cursor 1.3.9 (AI-first code editor) as an AppImage.
+
+## Features
+
+- **Cursor 1.3.9**: Latest version of the AI-first code editor
+- **AppImage Support**: Full AppImage compatibility with proper desktop integration
+- **Development Tools**: Complete development environment with Node.js, Python, Rust, and more
+- **Modern Shell**: Zsh with Starship prompt and useful aliases
+- **Desktop Environment**: GNOME with essential utilities
+- **Git Integration**: Pre-configured Git with modern defaults
+
+## Prerequisites
+
+- NixOS system with flakes enabled
+- At least 8GB RAM recommended
+- 20GB free disk space
+
+## Installation
+
+### 1. Clone the Repository
+
+```bash
+git clone <your-repo-url>
+cd cursor-flake
+```
+
+### 2. Update the SHA256 Hash (if needed)
+
+The current configuration uses the working Cursor 1.3.9 download URL. If you need to update to a newer version, run:
+
+```bash
+./update-cursor-hash.sh
+```
+
+This will automatically update the hash in `home.nix` with the correct value.
+
+### 3. Customize Configuration
+
+Edit the following files to match your system:
+
+- `configuration.nix`: System-wide settings
+- `home.nix`: User-specific settings (change username from "liam" to your username)
+- `hardware-configuration.nix`: Hardware-specific settings (run `nixos-generate-config` on your target system)
+
+### 4. Build and Switch
+
+```bash
+# Build the configuration
+sudo nixos-rebuild build --flake .#cursor-system
+
+# Switch to the new configuration
+sudo nixos-rebuild switch --flake .#cursor-system
+```
+
+### 5. First Boot Setup
+
+After the first boot:
+
+1. Log in as the configured user
+2. Cursor will be available in the applications menu
+3. You can also launch it from the terminal with `cursor`
+
+## Configuration
+
+### Cursor Settings
+
+The flake includes pre-configured Cursor settings in `~/.config/Cursor/User/settings.json`:
+
+- Modern font (JetBrains Mono with ligatures)
+- Dark theme
+- Optimized editor settings
+- Cursor AI features enabled
+
+### Development Environment
+
+The flake includes:
+
+- **Languages**: Node.js 20, Python 3, Rust
+- **Tools**: Git, ripgrep, fd, bat, exa, fzf, tmux
+- **Shell**: Zsh with Starship prompt
+- **Terminal**: Alacritty
+
+### Customization
+
+To customize the configuration:
+
+1. **Add packages**: Edit `home.nix` and add to `home.packages`
+2. **Change shell**: Modify the shell configuration in `home.nix`
+3. **Update Cursor settings**: Edit the settings in `home.nix`
+4. **System packages**: Add to `environment.systemPackages` in `configuration.nix`
+
+## Troubleshooting
+
+### AppImage Issues
+
+If Cursor doesn't run properly:
+
+1. Check if AppImage support is enabled:
+   ```bash
+   ls /proc/sys/fs/binfmt_misc/
+   ```
+
+2. Reinstall AppImage support:
+   ```bash
+   sudo nixos-rebuild switch --flake .#cursor-system
+   ```
+
+### Permission Issues
+
+If you encounter permission issues:
+
+1. Ensure the user is in the correct groups:
+   ```bash
+   groups
+   ```
+
+2. Add user to additional groups if needed in `configuration.nix`
+
+### Update Cursor
+
+To update to a newer version of Cursor:
+
+1. Update the version number in `home.nix`
+2. Update the download URL if needed
+3. Update the SHA256 hash
+4. Rebuild the system
+
+## File Structure
+
+```
+cursor-flake/
+├── flake.nix                 # Main flake definition
+├── configuration.nix         # NixOS system configuration
+├── home.nix                  # Home Manager user configuration
+├── hardware-configuration.nix # Hardware-specific settings
+└── README.md                 # This file
+```
+
+## Contributing
+
+1. Fork the repository
+2. Create a feature branch
+3. Make your changes
+4. Test the configuration
+5. Submit a pull request
+
+## License
+
+This project is licensed under the MIT License - see the LICENSE file for details.
+
+## Support
+
+For issues and questions:
+
+1. Check the troubleshooting section
+2. Search existing issues
+3. Create a new issue with detailed information
+
+## Acknowledgments
+
+- Cursor team for the excellent AI-first editor
+- NixOS community for the amazing package management system
+- Home Manager for user configuration management 

configuration.nix

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+{ config, pkgs, lib, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
+  # Bootloader
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  # Enable AppImage support
+  boot.binfmt.emulatedSystems = [ ];
+
+  # Networking
+  networking.networkmanager.enable = true;
+  networking.hostName = "cursor-system";
+
+  # Time zone
+  time.timeZone = "UTC";
+
+  # Internationalisation
+  i18n.defaultLocale = "en_US.UTF-8";
+  i18n.extraLocaleSettings = {
+    LC_ADDRESS = "en_US.UTF-8";
+    LC_IDENTIFICATION = "en_US.UTF-8";
+    LC_MEASUREMENT = "en_US.UTF-8";
+    LC_MONETARY = "en_US.UTF-8";
+    LC_NAME = "en_US.UTF-8";
+    LC_NUMERIC = "en_US.UTF-8";
+    LC_PAPER = "en_US.UTF-8";
+    LC_TELEPHONE = "en_US.UTF-8";
+    LC_TIME = "en_US.UTF-8";
+  };
+
+  # X11 and Desktop Environment
+  services.xserver.enable = true;
+  services.displayManager.gdm.enable = true;
+  services.desktopManager.gnome.enable = true;
+
+  # Enable sound with pipewire
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+
+  # User configuration
+  users.users.liam = {
+    isNormalUser = true;
+    description = "Liam";
+    extraGroups = [ "networkmanager" "wheel" "video" "audio" ];
+    # Set explicit password (password: cursor)
+    hashedPassword = "$6$thkdqD1PCLUj6X9i$iPEOKRohaybp7XMYpyb7Zjd.Gdcl/weC732CYMlQ4ql7YDY8CLmSIqSUeH/efSnW.Wq9ICn2T5P5RSOqTqNlF0";
+    packages = with pkgs; [
+      # Essential tools
+      git
+      wget
+      curl
+      unzip
+      # AppImage support
+      appimage-run
+      # Development tools
+      gcc
+      gnumake
+      # Terminal
+      alacritty
+      # File manager
+      nautilus
+    ];
+  };
+
+  # Allow unfree packages (needed for some AppImages)
+  nixpkgs.config.allowUnfree = true;
+
+  # System packages
+  environment.systemPackages = with pkgs; [
+    # AppImage utilities
+    appimage-run
+    # Desktop utilities
+    gnome-tweaks
+    gnome-software
+    # System utilities
+    htop
+    neofetch
+    # Media support
+    ffmpeg
+    vlc
+  ];
+
+  # Enable flakes
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
+  # Garbage collection
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 30d";
+  };
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It's perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  system.stateVersion = "23.11";
+} 

flake.lock

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+{
+  "nodes": {
+    "home-manager": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1754421590,
+        "narHash": "sha256-TrlzGR5l/OltcTnBtihUxoKqv+JNEKWmUamDVWICtX0=",
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "rev": "a0b1afdb5efbf59f4b6e934d090cf8d150517890",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "home-manager",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1754214453,
+        "narHash": "sha256-Q/I2xJn/j1wpkGhWkQnm20nShYnG7TI99foDBpXm1SY=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "5b09dc45f24cf32316283e62aec81ffee3c3e376",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "home-manager": "home-manager",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "NixOS configuration with Cursor 1.3.9 AppImage";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { self, nixpkgs, home-manager }: {
+    nixosConfigurations = {
+      cursor-system = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [
+          ./configuration.nix
+          home-manager.nixosModules.home-manager
+          {
+            home-manager.useGlobalPkgs = true;
+            home-manager.useUserPackages = true;
+            home-manager.users.liam = import ./home.nix;
+          }
+        ];
+      };
+      test-system = nixpkgs.lib.nixosSystem {
+        system = "x86_64-linux";
+        modules = [
+          ./test-configuration.nix
+          home-manager.nixosModules.home-manager
+          {
+            home-manager.useGlobalPkgs = true;
+            home-manager.useUserPackages = true;
+            home-manager.users.liam = import ./test-home.nix;
+          }
+        ];
+      };
+    };
+  };
+} 

hardware-configuration.nix

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+# Do not modify this file!  It was generated by 'nixos-generate-config'
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports = [ ];
+
+  boot.initrd.availableKernelModules = [ "ata_piix" "ohci_pci" "ehci_pci" "ahci" "sd_mod" "sr_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "/dev/disk/by-uuid/placeholder";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/placeholder";
+      fsType = "vfat";
+    };
+
+  swapDevices = [ ];
+
+  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
+  # (the default) this is the recommended approach. When using systemd-networkd it's
+  # still possible to use this option, but it's recommended to use it in conjunction
+  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
+  networking.useDHCP = lib.mkDefault true;
+  # networking.interfaces.enp0s3.useDHCP = lib.mkDefault true;
+
+  nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  hardware.cpu.intel.updateMicrocode = lib.mkDefault config.hardware.enableRedistributableFirmware;
+} 

home.nix

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+{ config, pkgs, lib, ... }:
+
+let
+  # Cursor 1.3.9 AppImage wrapper
+  cursorAppImage = pkgs.writeShellScriptBin "cursor" ''
+    exec ${pkgs.appimage-run}/bin/appimage-run ${pkgs.fetchurl {
+      url = "https://downloads.cursor.com/production/54c27320fab08c9f5dd5873f07fca101f7a3e076/linux/x64/Cursor-1.3.9-x86_64.AppImage";
+      sha256 = "076ijp033xjg09aqjhjm6sslvq0hsjga35840m3br722lqpi6jfj";
+    }} "$@"
+  '';
+in
+{
+  home.username = "liam";
+  home.homeDirectory = "/home/liam";
+  home.stateVersion = "23.11";
+
+  # Let Home Manager install and manage itself
+  programs.home-manager.enable = true;
+
+  # Add Cursor to home packages
+  home.packages = with pkgs; [
+    cursorAppImage
+    # Additional development tools
+    nodejs_20
+    python3
+    rustc
+    cargo
+    # Terminal improvements
+    starship
+    zsh
+    # Git tools
+    git-crypt
+    git-lfs
+    # Additional utilities
+    ripgrep
+    fd
+    bat
+    eza
+    fzf
+    tmux
+  ];
+
+  # Shell configuration
+  programs.zsh = {
+    enable = true;
+    autosuggestion.enable = true;
+    enableCompletion = true;
+    syntaxHighlighting.enable = true;
+    shellAliases = {
+      ll = "eza -la";
+      la = "eza -a";
+      cat = "bat";
+      find = "fd";
+      grep = "rg";
+    };
+  };
+
+  # Starship prompt
+  programs.starship = {
+    enable = true;
+    enableZshIntegration = true;
+    settings = {
+      add_newline = false;
+      prompt_order = [ "directory" "git_branch" "git_status" "nodejs" "rust" "python" "cmd_duration" "line_break" "$all" ];
+    };
+  };
+
+  # Git configuration
+  programs.git = {
+    enable = true;
+    userName = "Liam";
+    userEmail = "liam@example.com";
+    extraConfig = {
+      init.defaultBranch = "main";
+      pull.rebase = true;
+    };
+  };
+
+  # VS Code settings (for Cursor compatibility)
+  home.file.".config/Code/User/settings.json".text = builtins.toJSON {
+    "editor.fontSize" = 14;
+    "editor.fontFamily" = "'JetBrains Mono', 'Fira Code', Consolas, 'Courier New', monospace";
+    "editor.fontLigatures" = true;
+    "editor.tabSize" = 2;
+    "editor.insertSpaces" = true;
+    "editor.rulers" = [ 80 120 ];
+    "editor.minimap.enabled" = false;
+    "workbench.colorTheme" = "Default Dark+";
+    "workbench.iconTheme" = "material-icon-theme";
+    "terminal.integrated.fontSize" = 14;
+    "terminal.integrated.fontFamily" = "'JetBrains Mono', 'Fira Code', Consolas, 'Courier New', monospace";
+  };
+
+  # Cursor-specific settings
+  home.file.".config/Cursor/User/settings.json".text = builtins.toJSON {
+    "editor.fontSize" = 14;
+    "editor.fontFamily" = "'JetBrains Mono', 'Fira Code', Consolas, 'Courier New', monospace";
+    "editor.fontLigatures" = true;
+    "editor.tabSize" = 2;
+    "editor.insertSpaces" = true;
+    "editor.rulers" = [ 80 120 ];
+    "editor.minimap.enabled" = false;
+    "workbench.colorTheme" = "Default Dark+";
+    "workbench.iconTheme" = "material-icon-theme";
+    "terminal.integrated.fontSize" = 14;
+    "terminal.integrated.fontFamily" = "'JetBrains Mono', 'Fira Code', Consolas, 'Courier New', monospace";
+    "cursor.chat.enabled" = true;
+    "cursor.chat.autoComplete" = true;
+  };
+
+  # Environment variables
+  home.sessionVariables = {
+    EDITOR = "cursor";
+    VISUAL = "cursor";
+    BROWSER = "firefox";
+  };
+
+  # XDG directories
+  xdg = {
+    enable = true;
+    userDirs = {
+      enable = true;
+      createDirectories = true;
+      desktop = "$HOME/Desktop";
+      documents = "$HOME/Documents";
+      download = "$HOME/Downloads";
+      music = "$HOME/Music";
+      pictures = "$HOME/Pictures";
+      publicShare = "$HOME/Public";
+      templates = "$HOME/Templates";
+      videos = "$HOME/Videos";
+    };
+  };
+} 

test-configuration.nix

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+{ config, pkgs, lib, ... }:
+
+{
+  imports = [
+    ./hardware-configuration.nix
+  ];
+
+  # Bootloader
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  # Networking
+  networking.networkmanager.enable = true;
+  networking.hostName = "cursor-test-system";
+
+  # Time zone
+  time.timeZone = "UTC";
+
+  # Internationalisation
+  i18n.defaultLocale = "en_US.UTF-8";
+
+  # X11 and Desktop Environment
+  services.xserver.enable = true;
+  services.displayManager.gdm.enable = true;
+  services.desktopManager.gnome.enable = true;
+
+  # Enable sound with pipewire
+  security.rtkit.enable = true;
+  services.pipewire = {
+    enable = true;
+    alsa.enable = true;
+    alsa.support32Bit = true;
+    pulse.enable = true;
+  };
+
+  # User configuration
+  users.users.liam = {
+    isNormalUser = true;
+    description = "Liam";
+    extraGroups = [ "networkmanager" "wheel" "video" "audio" ];
+    packages = with pkgs; [
+      # Essential tools
+      git
+      wget
+      curl
+      unzip
+      # AppImage support
+      appimage-run
+      # Development tools
+      gcc
+      gnumake
+      # Terminal
+      alacritty
+      # File manager
+      nautilus
+    ];
+  };
+
+  # Allow unfree packages
+  nixpkgs.config.allowUnfree = true;
+
+  # System packages
+  environment.systemPackages = with pkgs; [
+    # AppImage utilities
+    appimage-run
+    # Desktop utilities
+    gnome-tweaks
+    gnome-software
+    # System utilities
+    htop
+    neofetch
+    # Media support
+    ffmpeg
+    vlc
+  ];
+
+  # Enable flakes
+  nix.settings.experimental-features = [ "nix-command" "flakes" ];
+
+  # Garbage collection
+  nix.gc = {
+    automatic = true;
+    dates = "weekly";
+    options = "--delete-older-than 30d";
+  };
+
+  system.stateVersion = "23.11";
+} 

test-home.nix

@@ -0,0 +1,92 @@
+{ config, pkgs, lib, ... }:
+
+{
+  home.username = "liam";
+  home.homeDirectory = "/home/liam";
+  home.stateVersion = "23.11";
+
+  # Let Home Manager install and manage itself
+  programs.home-manager.enable = true;
+
+  # Add development tools to home packages
+  home.packages = with pkgs; [
+    # Additional development tools
+    nodejs_20
+    python3
+    rustc
+    cargo
+    # Terminal improvements
+    starship
+    zsh
+    # Git tools
+    git-crypt
+    git-lfs
+    # Additional utilities
+    ripgrep
+    fd
+    bat
+    eza
+    fzf
+    tmux
+  ];
+
+  # Shell configuration
+  programs.zsh = {
+    enable = true;
+    autosuggestion.enable = true;
+    enableCompletion = true;
+    syntaxHighlighting.enable = true;
+    shellAliases = {
+      ll = "eza -la";
+      la = "eza -a";
+      cat = "bat";
+      find = "fd";
+      grep = "rg";
+    };
+  };
+
+  # Starship prompt
+  programs.starship = {
+    enable = true;
+    enableZshIntegration = true;
+    settings = {
+      add_newline = false;
+      prompt_order = [ "directory" "git_branch" "git_status" "nodejs" "rust" "python" "cmd_duration" "line_break" "$all" ];
+    };
+  };
+
+  # Git configuration
+  programs.git = {
+    enable = true;
+    userName = "Liam";
+    userEmail = "liam@example.com";
+    extraConfig = {
+      init.defaultBranch = "main";
+      pull.rebase = true;
+    };
+  };
+
+  # Environment variables
+  home.sessionVariables = {
+    EDITOR = "nano";
+    VISUAL = "nano";
+    BROWSER = "firefox";
+  };
+
+  # XDG directories
+  xdg = {
+    enable = true;
+    userDirs = {
+      enable = true;
+      createDirectories = true;
+      desktop = "$HOME/Desktop";
+      documents = "$HOME/Documents";
+      download = "$HOME/Downloads";
+      music = "$HOME/Music";
+      pictures = "$HOME/Pictures";
+      publicShare = "$HOME/Public";
+      templates = "$HOME/Templates";
+      videos = "$HOME/Videos";
+    };
+  };
+} 

update-cursor-hash.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+
+# Script to update the SHA256 hash for Cursor AppImage
+# Run this script to get the correct hash and update home.nix
+
+set -e
+
+echo "Fetching SHA256 hash for Cursor 1.3.9 AppImage..."
+echo ""
+
+# Get the hash
+HASH=$(nix-prefetch-url https://downloads.cursor.com/production/54c27320fab08c9f5dd5873f07fca101f7a3e076/linux/x64/Cursor-1.3.9-x86_64.AppImage)
+
+echo "SHA256 hash: $HASH"
+echo ""
+echo "Please update the hash in home.nix:"
+echo "Replace the placeholder hash with:"
+echo "sha256 = \"$HASH\";"
+echo ""
+echo "You can do this manually or run:"
+echo "sed -i 's/sha256 = \"sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=\";/sha256 = \"$HASH\";/' home.nix"
+echo ""
+
+# Optionally update the file automatically
+read -p "Do you want to update home.nix automatically? (y/N): " -n 1 -r
+echo
+if [[ $REPLY =~ ^[Yy]$ ]]; then
+    sed -i "s/sha256 = \"sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=\";/sha256 = \"$HASH\";/" home.nix
+    echo "Updated home.nix with the correct hash!"
+else
+    echo "Please update home.nix manually with the hash above."
+fi