initial config

modules/user/applications.nix

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+# ==========================================
+# APPLICATIONS CONFIGURATION
+# ==========================================
+{ config, pkgs, inputs, ... }:
+
+{
+  # XDG default applications
+  xdg.mimeApps = {
+    enable = true;
+    defaultApplications = {
+      "text/html" = "Alacritty.desktop";
+      "x-scheme-handler/http" = "Alacritty.desktop";   # Override with your browser .desktop
+      "x-scheme-handler/https" = "Alacritty.desktop";
+      "text/plain" = "nvim.desktop";
+    };
+  };
+
+  home.sessionVariables = {
+    EDITOR = "nvim";
+    VISUAL = "nvim";
+    BROWSER = "firefox";        # Placeholder — change to helium if installed
+    TERMINAL = "alacritty";
+
+    # Wayland-native rendering for Electron apps
+    NIXOS_OZONE_WL = "1";
+
+    # Fix Java Swing apps on Wayland
+    _JAVA_AWT_WM_NONREPARENTING = "1";
+  };
+}

modules/user/dotfiles.nix

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+# ==========================================
+# DOTFILES — Symlink config files
+# ==========================================
+{ config, pkgs, ... }:
+
+{
+  # Hyprland configuration
+  xdg.configFile."hypr/hyprland.conf".source = ../../config/hypr/hyprland.conf;
+
+  # Waybar
+  xdg.configFile."waybar/config.jsonc".source = ../../config/waybar/config.jsonc;
+  xdg.configFile."waybar/style.css".source = ../../config/waybar/style.css;
+
+  # Walker launcher
+  xdg.configFile."walker/config.toml".source = ../../config/walker/config.toml;
+
+  # Alacritty terminal
+  xdg.configFile."alacritty/alacritty.toml".source = ../../config/alacritty/alacritty.toml;
+}

modules/user/git.nix

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+# ==========================================
+# GIT CONFIGURATION
+# ==========================================
+{ config, pkgs, ... }:
+
+{
+  programs.git = {
+    enable = true;
+    settings = {
+      user = {
+        name = "Matiss";                                    # CHANGE ME
+        email = "your-email@users.noreply.github.com";      # CHANGE ME
+      };
+
+      # SSH for GitHub by default
+      url."git@github.com:".insteadOf = "https://github.com/";
+
+      init.defaultBranch = "main";
+      diff.algorithm = "histogram";
+
+      push = {
+        autoSetupRemote = true;
+        default = "current";
+      };
+    };
+  };
+
+  # SSH — GitHub key
+  programs.ssh = {
+    enable = true;
+    matchBlocks."github.com" = {
+      identityFile = "/home/matiss/.ssh/id_ed25519";  # CHANGE ME to your key path
+      identitiesOnly = true;
+    };
+    matchBlocks."*" = {
+      setEnv.TERM = "xterm-256color";
+    };
+  };
+}

modules/user/neovim.nix

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+# ==========================================
+# NEOVIM CONFIGURATION (via Nixvim)
+# ==========================================
+# Gruvbox theme, LSP, Treesitter, Telescope, file tree.
+# ==========================================
+{ config, pkgs, ... }:
+
+{
+  programs.nixvim = {
+    enable = true;
+
+    opts = {
+      number = true;
+      relativenumber = true;
+      shiftwidth = 2;
+      tabstop = 2;
+      expandtab = true;
+      smartindent = true;
+      wrap = false;
+      swapfile = false;
+      backup = false;
+      undofile = true;
+      hlsearch = false;
+      incsearch = true;
+      termguicolors = true;
+      scrolloff = 8;
+      signcolumn = "yes";
+      updatetime = 50;
+      clipboard = "unnamedplus";
+    };
+
+    globals = {
+      mapleader = " ";
+      maplocalleader = " ";
+    };
+
+    # Gruvbox colorscheme — matches omarchy aesthetic
+    colorschemes.gruvbox = {
+      enable = true;
+      settings = {
+        contrast_dark = "hard";
+        transparent_mode = true;
+      };
+    };
+
+    # Treesitter (syntax highlighting)
+    plugins.treesitter = {
+      enable = true;
+      settings.highlight.enable = true;
+      settings.indent.enable = true;
+    };
+
+    # Telescope (fuzzy finder)
+    plugins.telescope = {
+      enable = true;
+      keymaps = {
+        "<leader>ff" = { action = "find_files"; options.desc = "Find files"; };
+        "<leader>fg" = { action = "live_grep"; options.desc = "Live grep"; };
+        "<leader>fb" = { action = "buffers"; options.desc = "Buffers"; };
+        "<leader>fh" = { action = "help_tags"; options.desc = "Help tags"; };
+        "<leader>fr" = { action = "oldfiles"; options.desc = "Recent files"; };
+      };
+    };
+
+    # Neo-tree (file tree)
+    plugins.neo-tree = {
+      enable = true;
+    };
+
+    # LSP
+    plugins.lsp = {
+      enable = true;
+      servers = {
+        nil_ls.enable = true;        # Nix
+        pyright.enable = true;       # Python
+        ts_ls.enable = true;         # TypeScript/JavaScript
+        bashls.enable = true;        # Bash
+        jsonls.enable = true;        # JSON
+        yamlls.enable = true;        # YAML
+        html.enable = true;          # HTML
+        cssls.enable = true;         # CSS
+      };
+    };
+
+    # Autocompletion
+    plugins.cmp = {
+      enable = true;
+      autoEnableSources = true;
+      settings = {
+        sources = [
+          { name = "nvim_lsp"; }
+          { name = "path"; }
+          { name = "buffer"; }
+        ];
+        mapping = {
+          "<C-n>" = "cmp.mapping.select_next_item()";
+          "<C-p>" = "cmp.mapping.select_prev_item()";
+          "<C-y>" = "cmp.mapping.confirm({ select = true })";
+          "<C-Space>" = "cmp.mapping.complete()";
+        };
+      };
+    };
+
+    # Status line
+    plugins.lualine = {
+      enable = true;
+      settings.options.theme = "gruvbox";
+    };
+
+    # Autopairs
+    plugins.nvim-autopairs.enable = true;
+
+    # Git signs in the gutter
+    plugins.gitsigns.enable = true;
+
+    # Which-key (show keybindings)
+    plugins.which-key.enable = true;
+
+    # Keymaps
+    keymaps = [
+      { key = "<leader>e"; action = "<cmd>Neotree toggle<CR>"; options.desc = "Toggle file tree"; }
+      { key = "<leader>w"; action = "<cmd>w<CR>"; options.desc = "Save"; }
+      { key = "<leader>q"; action = "<cmd>q<CR>"; options.desc = "Quit"; }
+      # Window navigation
+      { key = "<C-h>"; action = "<C-w>h"; options.desc = "Move left"; }
+      { key = "<C-j>"; action = "<C-w>j"; options.desc = "Move down"; }
+      { key = "<C-k>"; action = "<C-w>k"; options.desc = "Move up"; }
+      { key = "<C-l>"; action = "<C-w>l"; options.desc = "Move right"; }
+    ];
+  };
+}

modules/user/packages.nix

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+# ==========================================
+# PACKAGES — User Applications
+# ==========================================
+# Spec: Codex, Claude Code, Gemini CLI, Helium, Cursor,
+#        Antigravity, Lazydocker, Git, Gh, Alacritty,
+#        Zoxide, Fzf, Bat, Eza, Fd, Impala, Bun, Nodejs,
+#        Docker, Bitwarden, Beeper, Python, Spotify, Tailscale
+# ==========================================
+{ config, pkgs, inputs, ... }:
+
+{
+  home.packages = with pkgs; [
+    # ── AI Coding Tools ──────────────────────────────────
+    unstable.claude-code            # Claude Code CLI
+    unstable.antigravity            # Antigravity IDE
+    # codex: install via `npm i -g @openai/codex` (not in nixpkgs)
+    # gemini-cli: install via `npm i -g @google/gemini-cli` (not in nixpkgs)
+
+    # ── Terminals & Editors ──────────────────────────────
+    alacritty                       # GPU-accelerated terminal
+    code-cursor                     # Cursor IDE
+
+    # ── Browsers ─────────────────────────────────────────
+    # Helium: add inputs.helium-browser flake package here
+    # if the flake builds for your system, uncomment:
+    # inputs.helium-browser.packages.${pkgs.stdenv.hostPlatform.system}.default
+
+    # ── CLI Essentials (omarchy-style) ───────────────────
+    bat                             # cat with syntax highlighting
+    eza                             # modern ls
+    fd                              # modern find
+    fzf                             # fuzzy finder
+    zoxide                          # smart cd
+    ripgrep                         # fast grep
+    lazydocker                      # Docker TUI
+    impala                          # TUI WiFi manager
+    yazi                            # TUI file manager
+    btop                            # system monitor
+    fastfetch                       # system info
+    tealdeer                        # tldr man pages
+
+    # ── Version Control ──────────────────────────────────
+    git
+    gh                              # GitHub CLI
+    lazygit                         # Git TUI
+
+    # ── Development Runtimes ─────────────────────────────
+    nodejs
+    bun
+    python3
+    uv                              # fast Python package manager
+
+    # ── Containers ───────────────────────────────────────
+    docker-compose
+
+    # ── Desktop Apps ─────────────────────────────────────
+    bitwarden                       # password manager
+    beeper                          # unified messaging
+    spotify                         # music
+
+    # ── System Utilities ─────────────────────────────────
+    wget
+    curl
+    unzip
+    wl-clipboard
+    cliphist
+    wl-clip-persist
+
+    # ── Theming Dependencies ─────────────────────────────
+    gnome-themes-extra
+    adwaita-qt
+    adwaita-qt6
+    dconf
+  ];
+
+  # ── Post-activation: Install npm-only tools ────────────
+  # Codex and Gemini CLI aren't in nixpkgs; install them
+  # globally via npm after first `nixos-rebuild switch`.
+  home.activation.installNpmTools = config.lib.dag.entryAfter [ "writeBoundary" ] ''
+    export PATH="${pkgs.nodejs}/bin:$PATH"
+    if ! command -v codex &> /dev/null; then
+      echo "Installing @openai/codex via npm..."
+      ${pkgs.nodejs}/bin/npm i -g @openai/codex 2>/dev/null || true
+    fi
+    if ! command -v gemini &> /dev/null; then
+      echo "Installing @google/gemini-cli via npm..."
+      ${pkgs.nodejs}/bin/npm i -g @google/gemini-cli 2>/dev/null || true
+    fi
+  '';
+}

modules/user/shell.nix

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+# ==========================================
+# SHELL CONFIGURATION (Zsh)
+# ==========================================
+# Omarchy-style: Oh-My-Zsh + modern CLI replacements
+# ==========================================
+{ config, pkgs, ... }:
+
+{
+  # Atuin — searchable shell history
+  programs.atuin = {
+    enable = true;
+    enableZshIntegration = true;
+    settings = {
+      auto_sync = false;
+      search_mode = "fuzzy";
+    };
+  };
+
+  # Zsh
+  programs.zsh = {
+    enable = true;
+    enableCompletion = true;
+    autosuggestion.enable = true;
+    syntaxHighlighting.enable = true;
+
+    shellAliases = {
+      # Rebuild shortcuts
+      upd = "cd ~/nixos-config && sudo nixos-rebuild switch --flake . && echo 'Done!'";
+      upd-test = "cd ~/nixos-config && sudo nixos-rebuild test --flake .";
+      upd-build = "cd ~/nixos-config && nixos-rebuild dry-build --flake .";
+
+      # Modern replacements
+      ls = "eza --icons";
+      ll = "eza -la --icons";
+      lt = "eza -la --icons --tree --level=2";
+      cat = "bat --style=plain";
+      find = "fd";
+
+      # Clipboard (Wayland)
+      pbcopy = "wl-copy";
+      pbpaste = "wl-paste";
+
+      # Docker
+      lzd = "lazydocker";
+
+      # Git
+      lg = "lazygit";
+    };
+
+    oh-my-zsh = {
+      enable = true;
+      theme = "gnzh";
+      plugins = [
+        "git"
+        "docker"
+        "docker-compose"
+        "eza"
+        "zoxide"
+        "colored-man-pages"
+        "fzf"
+      ];
+    };
+
+    initContent = ''
+      # Force Atuin up-arrow binding
+      bindkey '^[[A' atuin-up-search
+      bindkey '^[OA' atuin-up-search
+
+      # Yazi wrapper — cd on exit
+      function y() {
+        local tmp="$(mktemp -t "yazi-cwd.XXXXXX")" cwd
+        yazi "$@" --cwd-file="$tmp"
+        if cwd="$(cat -- "$tmp")" && [ -n "$cwd" ] && [ "$cwd" != "$PWD" ]; then
+          builtin cd -- "$cwd"
+        fi
+        rm -f -- "$tmp"
+      }
+    '';
+  };
+}

modules/user/theming.nix

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+# ==========================================
+# THEMING CONFIGURATION — Gruvbox Dark
+# ==========================================
+# Omarchy philosophy: one theme, consistently applied
+# across all applications and UI components.
+# ==========================================
+{ config, pkgs, ... }:
+
+{
+  # GTK Dark Mode
+  gtk = {
+    enable = true;
+    theme = {
+      name = "Adwaita-dark";
+      package = pkgs.gnome-themes-extra;
+    };
+    gtk3.extraConfig.gtk-application-prefer-dark-theme = 1;
+    gtk4.extraConfig.gtk-application-prefer-dark-theme = 1;
+  };
+
+  # Qt Dark Mode
+  qt = {
+    enable = true;
+    platformTheme.name = "adwaita";
+    style.name = "adwaita-dark";
+  };
+
+  # Dark mode preference for GNOME/GTK apps
+  dconf.settings = {
+    "org/gnome/desktop/interface" = {
+      color-scheme = "prefer-dark";
+    };
+  };
+}