feat: Add debugging var & GPG signing config

.config/home-manager/common.nix

@@ -1,4 +1,9 @@
-{ config, pkgs, ... }:
+{ config, pkgs, lib, ... }:
+
+let
+  # Get GPG signing key from host configuration, with fallback
+  gpgSigningKey = config.myConfig.gpgSigningKey or null;
+in
 
 {
   home.packages = [
@@ -19,6 +24,7 @@
     pkgs.lazydocker
     pkgs.lazygit
     pkgs.neovim
+    pkgs.pinentry-curses  # For GPG password prompts in terminal
     pkgs.ripgrep
     pkgs.tmux
     pkgs.yq
@@ -94,6 +100,11 @@
       hm = "home-manager";
       hms = "home-manager switch";
       hmb = "home-manager build --no-out-link";
+
+      # GPG aliases for easier key management
+      gpg-list = "gpg --list-secret-keys --keyid-format=long";
+      gpg-export = "gpg --armor --export";
+      gpg-restart = "gpg-connect-agent reloadagent /bye";
     };
   };
 
@@ -114,6 +125,10 @@
       init.defaultBranch = "main";
       pull.rebase = false;
       push.default = "simple";
+
+      # GPG signing configuration
+      commit.gpgsign = true;
+      tag.gpgsign = true;
     };
 
     aliases = {
@@ -148,6 +163,43 @@
       ".env"
       ".env.local"
     ];
+  } // lib.optionalAttrs (gpgSigningKey != null) {
+    signing = {
+      key = gpgSigningKey;
+      signByDefault = true;
+    };
+  };
+
+  # Configure GPG for commit signing
+  programs.gpg = {
+    enable = true;
+
+    # Configure GPG settings
+    settings = {
+      # Use agent for key management
+      use-agent = true;
+      # Default key preferences
+      personal-digest-preferences = "SHA512";
+      cert-digest-algo = "SHA512";
+      default-preference-list = "SHA512 SHA384 SHA256 SHA224 AES256 AES192 AES CAST5 ZLIB BZIP2 ZIP Uncompressed";
+    };
+  };
+
+  # Configure GPG agent for automatic key management
+  services.gpg-agent = {
+    enable = true;
+
+    # Cache settings for convenience
+    defaultCacheTtl = 43200; # 12 hours (longer default)
+    maxCacheTtl = 86400;     # 24 hours
+
+    # Enable SSH support (optional, useful for SSH key management)
+    enableSshSupport = false;
+
+    # Pin entry program for password prompts
+    pinentry = {
+      package = pkgs.pinentry-curses; # Use curses for terminal, or pkgs.pinentry-gtk2 for GUI
+    };
   };
 
   # Let Home Manager install and manage itself.

.config/home-manager/hosts/default.nix

@@ -34,6 +34,8 @@ in
   # Custom configuration using our module
   myConfig = {
     configPath = "${homeDirectory}/.config/home-manager/hosts/default.nix";
+    # Default GPG key (optional - can be left null for no signing)
+    gpgSigningKey = null; # Set to your default key ID if desired
   };
 
   # Optional: Add some debug info to session variables

.config/home-manager/hosts/macbook-air.nix

@@ -13,5 +13,6 @@
   # Custom configuration using our module
   myConfig = {
     configPath = "${config.home.homeDirectory}/.config/home-manager/hosts/macbook-air.nix";
+    gpgSigningKey = "PERSONAL_GPG_KEY_ID_HERE"; # Personal MacBook Air GPG key
   };
 }

.config/home-manager/hosts/work-macbook-pro.nix

@@ -13,5 +13,6 @@
   # Custom configuration using our module
   myConfig = {
     configPath = "${config.home.homeDirectory}/.config/home-manager/hosts/work-macbook-pro.nix";
+    gpgSigningKey = "799887D03FE96FD0"; # Work-specific GPG key
   };
 }

.config/home-manager/modules/machine-config.nix

@@ -9,6 +9,13 @@ with lib;
       default = "${config.home.homeDirectory}/.config/home-manager/home.nix";
       description = "Path to the home-manager configuration file for this machine";
     };
+
+    gpgSigningKey = mkOption {
+      type = types.nullOr types.str;
+      default = null;
+      description = "GPG key ID for signing git commits on this machine";
+      example = "ABC123DEF456";
+    };
   };
 
   config = {

.devcontainer/devcontainer.json

@@ -8,22 +8,10 @@
   //   "DEBUG_DOTFILES": "true"
   // },
   "customizations": {
-    "vscode": {
-      "extensions": [
-        "ms-azuretools.vscode-docker",
-        "timonwong.shellcheck",
-        "esbenp.prettier-vscode",
-        "foxundermoon.shell-format",
-        "sumneko.lua"
-      ],
-      "settings": {
-        "Lua.diagnostics.globals": ["vim"]
-      }
+    "settings": {
+      "dotfiles.repository": "",
+      "dotfiles.targetPath": "",
+      "dotfiles.installCommand": ""
     }
-  },
-  "features": {
-    "ghcr.io/devcontainers/features/docker-in-docker:2": {},
-    "ghcr.io/devcontainers/features/github-cli:1": {}
-  },
-  "remoteUser": "vscode"
+  }
 }

install.sh

@@ -2,6 +2,14 @@
 
 set -e # Exit on any error
 
+# Check if dotfiles installation should be skipped
+if [[ "${DEBUG_DOTFILES:-}" == "true" ]]; then
+  echo "🚫 DEBUG_DOTFILES is set to 'true' - skipping dotfiles installation"
+  echo "   This is useful for debugging devcontainer setups without installing dotfiles"
+  echo "   To install dotfiles, unset DEBUG_DOTFILES or set it to 'false'"
+  exit 0
+fi
+
 # Colors for output
 RED='\033[0;31m'
 GREEN='\033[0;32m'