Adds GTK theme and bootstrap file

.config/yadm/bootstrap

@@ -1,32 +1,29 @@
 #!/bin/bash
 
-confirm() {
-  # call with a prompt string or use a default
-  read -r -p "${1} [y/N] " response
-  case "$response" in
-  [yY][eE][sS] | [yY])
-    1
-    ;;
-  *)
-    0
-    ;;
-  esac
-}
+# Save this file as ~/.config/yadm/bootstrap and make it executable. It will
+# execute all executable files (excluding templates and editor backups) in the
+# ~/.config/yadm/bootstrap.d directory when run.
 
-debug() {
-  echo "Debug:"
-  echo "XDG_SESSION_DESKTOP $XDG_SESSION_DESKTOP"
-}
+set -eu
 
-CYAN='\033[0;36m'
-NC='\033[0m'
+# Directory to look for bootstrap executables in
+BOOTSTRAP_D="${BASH_SOURCE[0]}.d"
 
-SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)
+if [[ ! -d "$BOOTSTRAP_D" ]]; then
+  echo "Error: bootstrap directory '$BOOTSTRAP_D' not found" >&2
+  exit 1
+fi
 
-# install dependencies
-source "$SCRIPT_DIR/_install_dependencies.sh"
+declare -a bootstraps
+while IFS= read -r bootstrap; do
+  if [[ -x "$bootstrap" && ! "$bootstrap" =~ "##" && ! "$bootstrap" =~ ~$ ]]; then
+    bootstraps+=("$bootstrap")
+  fi
+done < <(find -L "$BOOTSTRAP_D" -type f | sort)
 
-source "$SCRIPT_DIR/_install_desktop_env.sh"
-
-source "$SCRIPT_DIR/_install_keymap.sh"
-source "$SCRIPT_DIR/_install_fonts.sh"
+for bootstrap in "${bootstraps[@]}"; do
+  if ! "$bootstrap"; then
+    echo "Error: bootstrap '$bootstrap' failed" >&2
+    exit 1
+  fi
+done