Update Brewfile

Brewfile

@@ -24,7 +24,6 @@ brew "direnv"
 brew "dua-cli"
 brew "duck"
 brew "dust"
-brew "earthly"
 brew "espressif/eim/eim", trusted: true
 brew "esptool"
 brew "fish"

bin/cloudy.sh

@@ -4,7 +4,12 @@ set -ueo pipefail
 shopt -s extglob
 
 # get libraries
-. ${HOME}/.local/lib/bash/tui.sh
+if [[ -f "${HOME}/.local/lib/bash/tui.sh" ]]; then
+  . "${HOME}/.local/lib/bash/tui.sh"
+else
+  echo "Error: ${HOME}/.local/lib/bash/tui.sh not found!" >&2
+  exit 1
+fi
 
 COMMANDS=(
   gctx
@@ -43,7 +48,7 @@ _gctx_choose() {
     --format='value(is_active, name, format("{} (as {})", properties.core.project, properties.core.account))')
   local choice
   if choice=$(printf "%-${maxnamelen}s %s\n" "${lines[@]}" | select_entry "gcloud config" "$default") ; then
-    _gctx_set "${choice}"
+    _gctx_set "$(echo "${choice}" | awk '{print $1}')"
   else
     echo "No option selected, leaving unchanged."
   fi
@@ -68,7 +73,7 @@ _gctx_clone() {
   local oldconfig=()
   local line
   while IFS= read -r line ; do
-    old_config+=("$line")
+    oldconfig+=("$line")
   done < <(gcloud config configurations describe "$(_gctx_name)" --format='multi(properties:format="flattened[separator=\" \"]")')
 
   # create new

bin/darwin-env.sh

@@ -1,8 +1,22 @@
 #!/bin/sh
 
-env > ${TMPDIR}/env-pre
+set -o nounset
-. ${HOME}/.shenv
+
-env > ${TMPDIR}/env-post
+TMP_DIR="${TMPDIR:-/tmp}"
-for VAR in $(env | cut -d'=' -f1) ; do
+TMP_DIR="${TMP_DIR%/}"
-  /bin/launchctl setenv "${VAR}" "$(eval echo \$${VAR})"
+
+env > "${TMP_DIR}/env-pre" 2>/dev/null || true
+if [ -f "${HOME}/.shenv" ]; then
+  . "${HOME}/.shenv"
+fi
+env > "${TMP_DIR}/env-post" 2>/dev/null || true
+
+if [ -x "/bin/launchctl" ]; then
+  for VAR in $(env | awk -F= '/^[a-zA-Z_][a-zA-Z0-9_]*=/ {print $1}') ; do
+    case "${VAR}" in
+      _|""|*[!a-zA-Z0-9_]*|[0-9]*) continue ;;
+    esac
+    eval "val=\${${VAR}:-}"
+    /bin/launchctl setenv "${VAR}" "${val}"
   done
+fi

bin/fix-broken-symlinks.sh

@@ -47,7 +47,7 @@ shift $((OPTIND - 1)) # Remove the parsed options
 
 # --- Set target directory ---
 # Use the first remaining argument as the target directory.
-if [ -n "$1" ]; then
+if [ "$#" -gt 0 ]; then
   TARGET_DIR="$1"
 fi
 
@@ -75,7 +75,7 @@ find "${TARGET_DIR}" -type l ! -exec test -e {} \; -print0 | while IFS= read -r
         continue
     fi
     # Ask the user for confirmation.
-    read -p "Remove broken symlink '${link}'? [y/N] " -n 1 -r
+    read -p "Remove broken symlink '${link}'? [y/N] " -n 1 -r < /dev/tty
     echo # Move to a new line after input.
 
     if [[ $REPLY =~ ^[Yy]$ ]]; then

bin/install_ansible.sh

@@ -3,7 +3,7 @@
 # Installs Ansible, trying user-space methods first before falling back to sudo.
 # This script is designed to be idempotent and safe to run multiple times.
 
-set -e # Exit immediately if a command exits with a non-zero status.
+set -euo pipefail # Exit immediately if a command exits with a non-zero status, undefined variable, or pipe failure.
 
 # --- Helper Functions ---
 info() { echo "[INFO] $1"; }
@@ -44,8 +44,8 @@ fi
 
 # Try Python's venv module if pipx failed or wasn't present
 VENV_PATH="${HOME}/.local/share/ansible_venv"
-# Create a temp path to avoid clobbering a failed install
+# Create a temp path securely to avoid clobbering a failed install
-VENV_TEST_PATH="/tmp/ansible_venv_test_$$"
+VENV_TEST_PATH="$(mktemp -d "${TMPDIR:-/tmp}/ansible_venv_test.XXXXXX")"
 if python3 -m venv "${VENV_TEST_PATH}" >/dev/null 2>&1; then
     rm -rf "${VENV_TEST_PATH}" # Clean up test
     info "Python's venv module is available. Creating a virtual environment at ${VENV_PATH}..."
@@ -55,7 +55,7 @@ if python3 -m venv "${VENV_TEST_PATH}" >/dev/null 2>&1; then
         info "Ansible installed successfully into a virtual environment."
         info "To use it, run: '${VENV_PATH}/bin/ansible'"
         info "To make it available everywhere, add its bin directory to your PATH:"
-        info "  echo 'export PATH="${VENV_PATH}/bin:$PATH"' >> ~/.profile"
+        info "  echo 'export PATH=\"${VENV_PATH}/bin:\$PATH\"' >> ~/.profile"
         info "(You may need to source ~/.profile or restart your shell)."
         exit 0
     else
@@ -63,6 +63,7 @@ if python3 -m venv "${VENV_TEST_PATH}" >/dev/null 2>&1; then
         rm -rf "${VENV_PATH}" # Clean up failed attempt
     fi
 else
+    rm -rf "${VENV_TEST_PATH}" # Clean up test after failure
     info "Python's venv module not available or failed to create a test environment."
 fi
 

bin/install_tool

@@ -1,9 +1,11 @@
 #!/bin/bash
 
-set -ue
+set -ueo pipefail
 
-TMPDIR=$(mktemp -d)
+SYS_TMPDIR="${TMPDIR:-/tmp}"
+TMPDIR="$(mktemp -d "${SYS_TMPDIR%/}/install_tool.XXXXXX")"
 trap 'rm -rf -- "${TMPDIR}"' EXIT
+export -n TMPDIR 2>/dev/null || true
 
 REINSTALL=0
 PACKAGES=1
@@ -38,7 +40,7 @@ shift $((OPTIND-1))
 
 function list_tools {
   echo "Options:" >/dev/stderr
-  awk 'BEGIN {s=0;FS=")"};/main tool selection/{s=1};/^\s+\w+)$/{if(s==1){print $1}}' "$0" | sort | while read -r opt; do
+  awk 'BEGIN {s=0;FS=")"};/main tool selection/{s=1};/^\s+[a-zA-Z0-9_.-]+)$/{if(s==1){print $1}}' "$0" | sort | while read -r opt; do
     echo -e "\\t${opt}" >/dev/stderr
   done
 }
@@ -124,11 +126,13 @@ function get_latest_github_release_url {
   local repo="$1"
   local glob="$2"
   curl -s "https://api.github.com/repos/${repo}/releases/latest" | \
-    jq -r ".assets[] | select(.name|test(\"${glob}\")) | .browser_download_url"
+    jq -r --arg rx "${glob}" '.assets[] | select(.name | test($rx)) | .browser_download_url'
 }
 
-function require_pipx {
+function require {
-  command -v pipx >/dev/null 2>&1 || die "Requires pipx"
+  local cmd="${1}"
+  local msg="${2:-Requires ${cmd}}"
+  command -v "${cmd}" >/dev/null 2>&1 || die "${msg}"
 }
 
 # Begin main tool selection
@@ -288,10 +292,7 @@ case ${TOOL} in
     git clone "${src}" "${DESTDIR}"
     ;;
   pwndbg)
-    if ! command -v gdb > /dev/null 2>&1 ; then
+    require gdb "No gdb available!"
-      echo 'No gdb available!' >/dev/stderr
-      exit 1
-    fi
     git clone --depth 1 -b stable https://github.com/pwndbg/pwndbg.git "${DESTDIR}"
     PY_PACKAGES=${DESTDIR}/vendor
     mkdir -p "${PY_PACKAGES}"
@@ -311,10 +312,7 @@ case ${TOOL} in
     ;;
   gef)
     makedest_or_die
-    if ! command -v gdb > /dev/null 2>&1 ; then
+    require gdb "No gdb available!"
-      echo 'No gdb available!' >/dev/stderr
-      exit 1
-    fi
     download \
       https://github.com/hugsy/gef/raw/master/gef.py \
       "${DESTDIR}/gef.py"
@@ -441,25 +439,19 @@ EOF
     add_bin_symlink docker-compose
     ;;
   tldr)
-    require_pipx
+    require pipx
     pipx install tldr
     ;;
   blint)
-    require_pipx
+    require pipx
     pipx install blint
     ;;
   dust)
-    if ! command -v cargo >/dev/null 2>&1 ; then
+    require cargo "This needs cargo (for rust)!"
-      echo "This needs cargo (for rust)!" >/dev/stderr
-      exit 1
-    fi
     cargo install du-dust
     ;;
   bottom)
-    if ! command -v cargo >/dev/null 2>&1 ; then
+    require cargo "This needs cargo (for rust)!"
-      echo "This needs cargo (for rust)!" >/dev/stderr
-      exit 1
-    fi
     cargo install bottom
     ;;
   delta)
@@ -476,7 +468,8 @@ EOF
   ropper)
     deb_only
     install_pkgs python3-z3
-    pip3 install --user pyvex ropper
+    require pipx
+    pipx install ropper
     ;;
   kubeconform)
     go install github.com/yannh/kubeconform/cmd/kubeconform@latest
@@ -527,14 +520,11 @@ EOF
     sh "${rustup_init}" --no-modify-path -y
     ;;
   igrep)
-    if ! command -v cargo >/dev/null 2>&1 ; then
+    require cargo "This needs cargo (for rust)!"
-      echo "This needs cargo (for rust)!" >/dev/stderr
-      exit 1
-    fi
     cargo install igrep
     ;;
   unblob)
-    require_pipx
+    require pipx
     pipx install unblob
     ;;
   fq)
@@ -555,6 +545,37 @@ EOF
       fi
     fi
     ;;
+  speckit)
+    require uv
+    latest_version=$(curl -s "https://api.github.com/repos/github/spec-kit/releases/latest" | jq -r '.tag_name')
+    if [ -z "${latest_version}" ] || [ "${latest_version}" = "null" ]; then
+      die "Failed to determine latest release version for speckit."
+    fi
+    uv tool install specify-cli --from "git+https://github.com/github/spec-kit.git@${latest_version}"
+    ;;
+  ssh-agent-mux)
+    makedest_or_die
+    os=$(uname -s | tr '[:upper:]' '[:lower:]')
+    case "$(uname -m)" in
+      x86_64|amd64)
+        arch="amd64"
+        ;;
+      aarch64|arm64)
+        arch="arm64"
+        ;;
+      *)
+        die "Unsupported architecture: $(uname -m)"
+        ;;
+    esac
+    tar_url=$(get_latest_github_release_url "overhacked/ssh-agent-mux" ".*${os}-${arch}\\.tar\\.gz$")
+    if [ -z "${tar_url}" ]; then
+      die "Could not find ssh-agent-mux release for ${os}-${arch}"
+    fi
+    download "${tar_url}" "${TMPDIR}/ssh-agent-mux.tar.gz"
+    tar zxf "${TMPDIR}/ssh-agent-mux.tar.gz" --strip-components=1 -C "${DESTDIR}"
+    chmod +x "${DESTDIR}/ssh-agent-mux"
+    add_bin_symlink ssh-agent-mux
+    ;;
   *)
     echo "Unknown tool: ${TOOL}" >/dev/stderr
     list_tools

bin/linux/setup/spicerandr.sh

@@ -2,12 +2,20 @@
 
 set -ue
 
+if [ "$(id -u)" -ne 0 ]; then
+  echo "Error: This script must be run as root." >&2
+  exit 1
+fi
+
 cat >/usr/local/bin/x-resize <<"EOF"
 #!/bin/sh
 PATH=/usr/bin:/bin:/usr/local/bin
-desktopuser=$(/bin/ps -ef  | /bin/grep -oP '^\w+ (?=.*vdagent( |$))') || exit 0
+desktopuser=$(/bin/ps -eo user,comm 2>/dev/null | awk '$2 ~ /vdagent/ {print $1; exit}')
+[ -z "$desktopuser" ] && exit 0
+desktophome=$(getent passwd "$desktopuser" | cut -d: -f6)
+[ -z "$desktophome" ] && exit 0
 export DISPLAY=:0
-export XAUTHORITY=$(eval echo "~$desktopuser")/.Xauthority
+export XAUTHORITY="${desktophome}/.Xauthority"
 /usr/bin/xrandr --output $(/usr/bin/xrandr | awk '/ connected/{print $1; exit; }') --auto
 EOF
 chmod 755 /usr/local/bin/x-resize

bin/newnote

@@ -182,13 +182,14 @@ if [[ -f "$TARGET_FILE" && "$OVERWRITE" != "true" ]]; then
 fi
 
 # 4. If the path ends in .md (case-insensitive), generate appropriate YAML front matter and write it to the new file.
-if [[ "${TARGET_BASE,,}" == *.md ]]; then
+if [[ "$TARGET_BASE" =~ \.[mM][dD]$ ]]; then
   NOTE_TITLE="${TARGET_BASE%.*}"
+  NOTE_TITLE_ESCAPED="${NOTE_TITLE//\"/\\\"}"
   CURRENT_DATE="$(date +"%Y-%m-%d %H:%M")"
 
   cat << EOF > "$TARGET_FILE"
 ---
-title: "$NOTE_TITLE"
+title: "$NOTE_TITLE_ESCAPED"
 date: $CURRENT_DATE
 tags: []
 ---

bin/restic/baymax

@@ -12,8 +12,8 @@ set -o pipefail
 # For this script, we assume the user's home directory.
 SOURCE_DIR="${HOME}"
 
-# Exclude file location. We'll create a default one next to the script.
+# Exclude file location.
-EXCLUDE_FILE="$HOME/.restic_exclude.darwin"
+EXCLUDE_FILE="${HOME}/.restic_exclude.darwin"
 
 # --- Functions ---
 usage() {
@@ -34,7 +34,7 @@ EOF
 
 # --- Main Script ---
 # Check if restic is installed
-if ! command -v restic &> /dev/null; then
+if ! command -v restic >/dev/null 2>&1; then
   echo "Error: restic command not found." >&2
   echo "Please install restic first: https://restic.net/" >&2
   exit 1
@@ -57,7 +57,7 @@ while getopts ":l:bu:h" opt; do
       ;;
     b)
       BACKUP_MODE="b2"
-      if [[ ${OPTIND} -le $# && "${!OPTIND}" != -* ]]; then
+      if [[ ${OPTIND} -le $# && "${!OPTIND:-}" != -* ]]; then
         REPO="b2:${!OPTIND}:"
         OPTIND=$((OPTIND + 1))
       fi
@@ -91,18 +91,19 @@ fi
 
 if [[ "${BACKUP_MODE}" == "b2" ]]; then
   if [[ -f "${HOME}/.resticb2" ]] ; then
+    # shellcheck disable=SC1090
     . "${HOME}/.resticb2"
   fi
-    export B2_ACCOUNT_ID
+  export B2_ACCOUNT_ID="${B2_ACCOUNT_ID:-}"
-    export B2_ACCOUNT_KEY
+  export B2_ACCOUNT_KEY="${B2_ACCOUNT_KEY:-}"
-    export B2_BUCKET_NAME
+  export B2_BUCKET_NAME="${B2_BUCKET_NAME:-}"
-    if [[ -z "${B2_ACCOUNT_ID:-}" || -z "${B2_ACCOUNT_KEY:-}" ]]; then
+  if [[ -z "${B2_ACCOUNT_ID}" || -z "${B2_ACCOUNT_KEY}" ]]; then
     echo "Error: For Backblaze B2 backups, you must set the B2_ACCOUNT_ID and B2_ACCOUNT_KEY environment variables." >&2
     exit 1
   fi
 
-    if [[ -z "${REPO:-}" ]]; then
+  if [[ -z "${REPO}" ]]; then
-        if [[ -n "${B2_BUCKET_NAME:-}" ]]; then
+    if [[ -n "${B2_BUCKET_NAME}" ]]; then
       REPO="b2:${B2_BUCKET_NAME}:"
     else
       echo "Error: Backup mode is B2 but no bucket name was provided and the B2_BUCKET_NAME environment variable is not set." >&2
@@ -113,41 +114,56 @@ if [[ "${BACKUP_MODE}" == "b2" ]]; then
 fi
 
 KEYCHAIN_ENTRY_NAME="restic_repo_password"
-if security find-generic-password -a "$(whoami)" -s "${KEYCHAIN_ENTRY_NAME}" >/dev/null 2>&1 ; then
+local_user="$(id -un 2>/dev/null || whoami)"
-  export RESTIC_PASSWORD_COMMAND="security find-generic-password -a \"$(whoami)\" -s \"${KEYCHAIN_ENTRY_NAME}\" -w"
+if security find-generic-password -a "${local_user}" -s "${KEYCHAIN_ENTRY_NAME}" >/dev/null 2>&1 ; then
+  printf -v RESTIC_PASSWORD_COMMAND 'security find-generic-password -a %q -s %q -w' "${local_user}" "${KEYCHAIN_ENTRY_NAME}"
+  export RESTIC_PASSWORD_COMMAND
 # Source file?
 elif [[ -f "${HOME}/.resticpass" ]] ; then
   export RESTIC_PASSWORD_FILE="${HOME}/.resticpass"
 fi
 
+# Ensure exclude file exists so restic does not fail when checking exclusions.
+if [[ ! -f "${EXCLUDE_FILE}" ]]; then
+  echo "Exclude file '${EXCLUDE_FILE}' not found. Creating a default macOS exclude file..."
+  cat << 'EOF' > "${EXCLUDE_FILE}"
+# Default restic exclusions for macOS
+.Trash
+Library/Caches
+Library/Logs
+.CFUserTextEncoding
+EOF
+fi
+
 # If the repository does not exist, initialize it.
 # The user will be prompted for a password, which will be required for all
 # future interactions with the repository.
-if ! restic -r "${REPO}" snapshots &> /dev/null; then
+if ! restic -r "${REPO}" snapshots >/dev/null 2>&1; then
   echo "Restic repository not found or not accessible. Initializing..."
   restic init -r "${REPO}"
 fi
 
-
 # --- Run Backup ---
 echo "Starting restic backup..."
 echo "Source: ${SOURCE_DIR}"
 echo "Repository: ${REPO}"
 
-BACKUP_CMD="restic backup \
+BACKUP_ARGS=(
-    --verbose \
+  "restic" "backup"
-    --repo \"${REPO}\" \
+  "--verbose"
-    --exclude-file \"${EXCLUDE_FILE}\" \
+  "--repo" "${REPO}"
-    --one-file-system \
+  "--exclude-file" "${EXCLUDE_FILE}"
-    --tag \"macbook-backup\""
+  "--one-file-system"
+  "--tag" "macbook-backup"
+)
 
 if [[ -n "${UPLOAD_LIMIT}" ]]; then
-    BACKUP_CMD="${BACKUP_CMD} --limit-upload ${UPLOAD_LIMIT}"
+  BACKUP_ARGS+=("--limit-upload" "${UPLOAD_LIMIT}")
 fi
 
-BACKUP_CMD="${BACKUP_CMD} \"${SOURCE_DIR}\""
+BACKUP_ARGS+=("${SOURCE_DIR}")
 
-eval "${BACKUP_CMD}"
+"${BACKUP_ARGS[@]}"
 
 echo "Backup complete."
 

bin/ssh-sign

@@ -72,15 +72,51 @@ shift # Consume the subcommand
 # Separate arguments from the file to be signed
 declare -a remaining_args
 file_to_sign=""
+f_provided=false
+n_provided=false
+I_provided=false
+s_provided=false
+
 while [[ "$#" -gt 0 ]]; do
-  # If we see a non-flag argument, assume it's the file to sign.
+  case "$1" in
-  # This works because the file to sign is the only positional argument.
+    -f)
-  if [[ "$1" != -* ]] && [[ -z "$file_to_sign" ]]; then
+      [[ -z "${2:-}" ]] && error "Option -f requires an argument."
-    file_to_sign="$1"
+      remaining_args+=("-f" "$2")
-  else
+      f_provided=true
-    remaining_args+=("$1")
+      shift 2
+      ;;
+    -n)
+      [[ -z "${2:-}" ]] && error "Option -n requires an argument."
+      remaining_args+=("-n" "$2")
+      n_provided=true
+      shift 2
+      ;;
+    -I)
+      [[ -z "${2:-}" ]] && error "Option -I requires an argument."
+      remaining_args+=("-I" "$2")
+      I_provided=true
+      shift 2
+      ;;
+    -s)
+      [[ -z "${2:-}" ]] && error "Option -s requires an argument."
+      remaining_args+=("-s" "$2")
+      s_provided=true
+      shift 2
+      ;;
+    -h|--help)
+      usage
+      ;;
+    -*)
+      error "Unknown option: $1"
+      ;;
+    *)
+      if [[ -n "$file_to_sign" ]]; then
+        error "Unexpected positional argument '$1' (already specified '$file_to_sign')."
       fi
+      file_to_sign="$1"
       shift
+      ;;
+  esac
 done
 
 # --- Build command based on subcommand ---
@@ -90,18 +126,6 @@ CMD_ARGS=("ssh-keygen" "-Y" "$SUBCOMMAND")
 # Append all the flag-based arguments (-f, -n, -I, -s)
 CMD_ARGS+=("${remaining_args[@]}")
 
-# Scan for provided flags to handle defaults correctly
-f_provided=false
-n_provided=false
-I_provided=false
-s_provided=false
-for arg in "${remaining_args[@]}"; do
-  [[ "$arg" == "-f" ]] && f_provided=true
-  [[ "$arg" == "-n" ]] && n_provided=true
-  [[ "$arg" == "-I" ]] && I_provided=true
-  [[ "$arg" == "-s" ]] && s_provided=true
-done
-
 if [[ "$SUBCOMMAND" == "sign" ]]; then
   if [[ -z "$file_to_sign" ]]; then
     error "Path to file to be signed is required for 'sign' command."

bin/update-authorized-keys

@@ -260,6 +260,7 @@ if [[ -f "${TARGET_FILE}" ]]; then
 fi
 
 MANAGED_SIGS_TMP=$(mktemp)
+CLEANUP_FILES+=("${MANAGED_SIGS_TMP}")
 echo "${MANAGED_BLOCK}" | awk '/^[^#]/ {
     n = split($0, parts, " ")
     sig = ""

bin/update_skel

@@ -1,7 +1,49 @@
 #!/bin/sh
-set -e
+set -eu
-SKEL_DIR=$(dirname -- "$(readlink -f -- "$HOME/.profile")")
+
-cd -- "$SKEL_DIR"
+resolve_symlink() {
-cd -- "$(git rev-parse --show-toplevel)"
+  _target="$1"
+  if command -v readlink >/dev/null 2>&1 && readlink -f -- "$_target" >/dev/null 2>&1; then
+    readlink -f -- "$_target"
+  elif command -v python3 >/dev/null 2>&1; then
+    python3 -c 'import os, sys; print(os.path.realpath(sys.argv[1]))' "$_target"
+  else
+    while [ -L "$_target" ]; do
+      _dir=$(cd -P "$(dirname -- "$_target")" >/dev/null 2>&1 && pwd)
+      _target=$(readlink "$_target")
+      case "$_target" in
+        /*) ;;
+        *) _target="$_dir/$_target" ;;
+      esac
+    done
+    echo "$_target"
+  fi
+}
+
+if [ -e "$HOME/.profile" ]; then
+  TARGET=$(resolve_symlink "$HOME/.profile")
+  SKEL_DIR=$(dirname -- "$TARGET")
+else
+  SKEL_DIR=""
+fi
+
+REPO_ROOT=""
+if [ -n "$SKEL_DIR" ] && cd -- "$SKEL_DIR" 2>/dev/null; then
+  REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || true)
+fi
+
+if [ -z "$REPO_ROOT" ] || [ ! -f "$REPO_ROOT/install.sh" ]; then
+  SCRIPT_DIR=$(dirname -- "$(resolve_symlink "$0")")
+  if cd -- "$SCRIPT_DIR" 2>/dev/null; then
+    REPO_ROOT=$(git rev-parse --show-toplevel 2>/dev/null || true)
+  fi
+  if [ -z "$REPO_ROOT" ] || [ ! -f "$REPO_ROOT/install.sh" ]; then
+    echo "Error: Could not determine skel repository root." >&2
+    exit 1
+  fi
+fi
+
+cd -- "$REPO_ROOT"
 git pull
-./install.sh
+./install.sh "$@"
+

deploy_checkout.sh

@@ -0,0 +1,65 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+usage() {
+  echo "Usage: $(basename "$0") [--dry-run] user@host" >&2
+  exit 1
+}
+
+DRY_RUN=0
+REMOTE=
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --dry-run)
+      DRY_RUN=1
+      shift
+      ;;
+    -h|--help)
+      usage
+      ;;
+    --)
+      shift
+      break
+      ;;
+    -*)
+      usage
+      ;;
+    *)
+      if [[ -n "${REMOTE}" ]]; then
+        usage
+      fi
+      REMOTE="$1"
+      shift
+      ;;
+  esac
+done
+
+if [[ $# -gt 0 || -z "${REMOTE}" ]]; then
+  usage
+fi
+
+SCRIPT_DIR="$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)"
+
+if ! git -C "$SCRIPT_DIR" rev-parse --is-inside-work-tree >/dev/null 2>&1; then
+  echo "Error: $SCRIPT_DIR is not inside a git repository." >&2
+  exit 1
+fi
+
+if [[ "$DRY_RUN" -eq 1 ]]; then
+  archive_list="$(git -C "$SCRIPT_DIR" archive --format=tar HEAD | tar -tf - | sed 's#^\./##' | sed '/^$/d;/^\.$/d' | sort)"
+  remote_list="$(ssh "$REMOTE" 'if [ -d "$HOME/.skel" ]; then cd "$HOME/.skel" && find . | sed "s#^\./##" | sed "/^$/d;/^\.$/d" | sort; fi' || true)"
+
+  printf 'Would deploy HEAD from %s to %s:%s\n' "$SCRIPT_DIR" "$REMOTE" '$HOME/.skel'
+  printf 'Would replace remote ~/.skel with %s tracked paths\n' "$(printf '%s' "$archive_list" | awk 'NF { n++ } END { print n + 0 }')"
+  if [[ -n "$remote_list" ]]; then
+    printf 'Would remove %s existing remote paths not present in HEAD\n' "$(comm -13 <(printf '%s\n' "$archive_list") <(printf '%s\n' "$remote_list") | awk 'NF { n++ } END { print n + 0 }')"
+  else
+    printf 'Remote ~/.skel does not exist or is empty\n'
+  fi
+  exit 0
+fi
+
+git -C "$SCRIPT_DIR" archive --format=tar HEAD | \
+  ssh "$REMOTE" 'rm -rf "$HOME/.skel" && mkdir -p "$HOME/.skel" && tar -xf - -C "$HOME/.skel"'

dotfiles/gitconfig

@@ -104,3 +104,9 @@
 
 [rerere]
   enabled = true
+[lfs]
+	concurrenttransfers = 3
+[lfs "customtransfer.xet"]
+	path = git-xet
+	args = transfer
+	concurrent = true

dotfiles/profile

@@ -4,16 +4,17 @@
 # Should only use POSIX constructs.
 
 # Always load ENV
-test -f "$HOME/.shenv" && . "$HOME/.shenv"
+test -f "${HOME}/.shenv" && . "${HOME}/.shenv"
 
 # Setup GREP_COLORS
 export GREP_COLOR='01;31'
 export GREP_COLORS='mt=01;31:mc=01;31:ms=01;31'
 
 # Setup LS_COLORS
-if whence dircolors >/dev/null 2>&1 ; then
+if command -v dircolors >/dev/null 2>&1 && test -f "${HOME}/.dircolors" ; then
-  test -f "${HOME}/.dircolors" && \
+  eval "$(dircolors -b "${HOME}/.dircolors" 2>/dev/null)"
-  eval "$(dircolors "${HOME}/.dircolors")"
+elif command -v gdircolors >/dev/null 2>&1 && test -f "${HOME}/.dircolors" ; then
+  eval "$(gdircolors -b "${HOME}/.dircolors" 2>/dev/null)"
 else
 # Static solarized LS_COLORS
   LS_COLORS='no=00:fi=00:di=34:ow=34;40:ln=35:pi=30;44:so=35;44:do=35;44:bd=33;44:cd=37;44:or=05;37;41:mi=05;37;41:ex=01;31:*.cmd=01;31:*.exe=01;31:*.com=01;31:*.bat=01;31:*.reg=01;31:*.app=01;31:*.txt=32:*.org=32:*.md=32:*.mkd=32:*.h=32:*.hpp=32:*.c=32:*.C=32:*.cc=32:*.cpp=32:*.cxx=32:*.objc=32:*.cl=32:*.sh=32:*.bash=32:*.csh=32:*.zsh=32:*.el=32:*.vim=32:*.java=32:*.pl=32:*.pm=32:*.py=32:*.rb=32:*.hs=32:*.php=32:*.htm=32:*.html=32:*.shtml=32:*.erb=32:*.haml=32:*.xml=32:*.rdf=32:*.css=32:*.sass=32:*.scss=32:*.less=32:*.js=32:*.coffee=32:*.man=32:*.0=32:*.1=32:*.2=32:*.3=32:*.4=32:*.5=32:*.6=32:*.7=32:*.8=32:*.9=32:*.l=32:*.n=32:*.p=32:*.pod=32:*.tex=32:*.go=32:*.sql=32:*.csv=32:*.sv=32:*.svh=32:*.v=32:*.vh=32:*.vhd=32:*.bmp=33:*.cgm=33:*.dl=33:*.dvi=33:*.emf=33:*.eps=33:*.gif=33:*.jpeg=33:*.jpg=33:*.JPG=33:*.mng=33:*.pbm=33:*.pcx=33:*.pdf=33:*.pgm=33:*.png=33:*.PNG=33:*.ppm=33:*.pps=33:*.ppsx=33:*.ps=33:*.svg=33:*.svgz=33:*.tga=33:*.tif=33:*.tiff=33:*.xbm=33:*.xcf=33:*.xpm=33:*.xwd=33:*.xwd=33:*.yuv=33:*.aac=33:*.au=33:*.flac=33:*.m4a=33:*.mid=33:*.midi=33:*.mka=33:*.mp3=33:*.mpa=33:*.mpeg=33:*.mpg=33:*.ogg=33:*.opus=33:*.ra=33:*.wav=33:*.anx=33:*.asf=33:*.avi=33:*.axv=33:*.flc=33:*.fli=33:*.flv=33:*.gl=33:*.m2v=33:*.m4v=33:*.mkv=33:*.mov=33:*.MOV=33:*.mp4=33:*.mp4v=33:*.mpeg=33:*.mpg=33:*.nuv=33:*.ogm=33:*.ogv=33:*.ogx=33:*.qt=33:*.rm=33:*.rmvb=33:*.swf=33:*.vob=33:*.webm=33:*.wmv=33:*.doc=31:*.docx=31:*.rtf=31:*.odt=31:*.dot=31:*.dotx=31:*.ott=31:*.xls=31:*.xlsx=31:*.ods=31:*.ots=31:*.ppt=31:*.pptx=31:*.odp=31:*.otp=31:*.fla=31:*.psd=31:*.7z=1;35:*.apk=1;35:*.arj=1;35:*.bin=1;35:*.bz=1;35:*.bz2=1;35:*.cab=1;35:*.deb=1;35:*.dmg=1;35:*.gem=1;35:*.gz=1;35:*.iso=1;35:*.jar=1;35:*.msi=1;35:*.rar=1;35:*.rpm=1;35:*.tar=1;35:*.tbz=1;35:*.tbz2=1;35:*.tgz=1;35:*.tx=1;35:*.war=1;35:*.xpi=1;35:*.xz=1;35:*.z=1;35:*.Z=1;35:*.zip=1;35:*.ANSI-30-black=30:*.ANSI-01;30-brblack=01;30:*.ANSI-31-red=31:*.ANSI-01;31-brred=01;31:*.ANSI-32-green=32:*.ANSI-01;32-brgreen=01;32:*.ANSI-33-yellow=33:*.ANSI-01;33-bryellow=01;33:*.ANSI-34-blue=34:*.ANSI-01;34-brblue=01;34:*.ANSI-35-magenta=35:*.ANSI-01;35-brmagenta=01;35:*.ANSI-36-cyan=36:*.ANSI-01;36-brcyan=01;36:*.ANSI-37-white=37:*.ANSI-01;37-brwhite=01;37:*.log=01;32:*~=01;32:*#=01;32:*.bak=01;33:*.BAK=01;33:*.old=01;33:*.OLD=01;33:*.org_archive=01;33:*.off=01;33:*.OFF=01;33:*.dist=01;33:*.DIST=01;33:*.orig=01;33:*.ORIG=01;33:*.swp=01;33:*.swo=01;33:*,v=01;33:*.gpg=34:*.gpg=34:*.pgp=34:*.asc=34:*.3des=34:*.aes=34:*.enc=34:*.sqlite=34:';
@@ -27,16 +28,16 @@ if [ "$(uname)" = "Darwin" ] ; then
 fi
 
 # Setup for libvirt
-if [ -z "${LIBVIRT_DEFAULT_URI}" ] ; then
+if [ -z "${LIBVIRT_DEFAULT_URI:-}" ] ; then
-  if [ "$(id -u)" = "0" ] || (id -g -n | grep -q "\blibvirt\b") ; then
+    export LIBVIRT_DEFAULT_URI="qemu:///system"
-    LIBVIRT_DEFAULT_URI="qemu:///system"
-    export LIBVIRT_DEFAULT_URI
-  fi
 fi
 
 # Got rust? (gvim, etc.)
 if test -d "${HOME}/.cargo/bin" ; then
-  PATH="${PATH}:${HOME}/.cargo/bin"
+  case ":${PATH}:" in
+    *:"${HOME}/.cargo/bin":*) ;;
+    *) PATH="${PATH}:${HOME}/.cargo/bin" ;;
+  esac
 fi
 
 test -f "${HOME}/.profile.local" && . "${HOME}/.profile.local"

dotfiles/shenv

@@ -29,6 +29,9 @@ export WORKON_HOME="$HOME/.virtualenvs"
 # GPG full key id
 export GPG_ID=7FD58D9A196DCEEEAD671F94F4D7A7915DEA789B
 
+# Capture uname early
+_UNAME="$(uname)"
+
 # things we need in all interactive shells
 case "$-" in
   *i*)
@@ -86,7 +89,6 @@ case "$-" in
     ;;
 esac
 
-
 # Opt out of .net telemetry
 export DOTNET_CLI_TELEMETRY_OPTOUT=1
 
@@ -97,78 +99,145 @@ export LVM_SUPPRESS_FD_WARNINGS=1
 export EARTHLY_SSH_AUTH_SOCK=""
 
 # Handle SSH_AUTH_SOCK for tmux consistency
+case "$-" in
+  *i*)
     _SSH_AUTH_LINK="${HOME}/.ssh/ssh_auth_sock"
 
     # Helper to check if a path is our link or points to it
     _is_link_path() {
       [ -z "$1" ] && return 1
-  [ "$1" = "${_SSH_AUTH_LINK}" ] && return 0
+      _target="${_SSH_AUTH_LINK:-${HOME}/.ssh/ssh_auth_sock}"
+      [ "$1" = "${_target}" ] && { unset -v _target; return 0; }
       if [ -L "$1" ] && command -v readlink >/dev/null 2>&1; then
         _T=$(readlink "$1")
         # Handle relative symlinks
         case "${_T}" in /*) ;; *) _T="$(dirname "$1")/${_T}" ;; esac
-    [ "${_T}" = "${_SSH_AUTH_LINK}" ] && return 0
+        [ "${_T}" = "${_target}" ] && { unset -v _target _T; return 0; }
+        unset -v _T
       fi
+      unset -v _target
       return 1
     }
 
+    # Helper to check if an SSH socket is valid and useful
+    _is_valid_ssh_sock() {
+      [ -z "$1" ] && return 1
+      [ -S "$1" ] || return 1
+
+      if command -v nc >/dev/null 2>&1; then
+        # Use nc to quickly check if the socket is listening.
+        # We use -N to shutdown the socket after EOF on stdin (for OpenBSD netcat compatibility).
+        if echo '' | nc -w 1 -N -U "$1" >/dev/null 2>&1; then
+          return 0
+        fi
+      fi
+
+      if command -v ssh-add >/dev/null 2>&1; then
+        SSH_AUTH_SOCK="$1" ssh-add -l >/dev/null 2>&1
+        case "$?" in
+          0|1) return 0 ;;
+          *)   return 1 ;;
+        esac
+      fi
+
+      if command -v nc >/dev/null 2>&1; then
+        return 1
+      fi
+      return 0
+    }
+
+    # Function to get the path to the socket for the local ssh-agent
+    get_local_ssh_agent_sock() {
+      _found=""
+      if [ "$(uname)" = "Darwin" ]; then
+        _found=$(launchctl getenv SSH_AUTH_SOCK 2>/dev/null)
+      elif command -v systemctl >/dev/null 2>&1; then
+        # Query systemd socket units directly to avoid environment overrides.
+        for _u in ssh-agent.socket openssh-agent.socket gcr-ssh-agent.socket gpg-agent-ssh.socket; do
+          _p=$(systemctl --user show "${_u}" -p Listen 2>/dev/null | cut -d= -f2- | cut -d' ' -f1)
+          if ! _is_link_path "${_p}" && _is_valid_ssh_sock "${_p}"; then
+            _found="${_p}"
+            break
+          fi
+        done
+        # Fallback to systemd environment
+        if [ -z "${_found}" ] || _is_link_path "${_found}" || ! _is_valid_ssh_sock "${_found}"; then
+          _found=$(systemctl --user show-environment 2>/dev/null | grep "^SSH_AUTH_SOCK=" | cut -d= -f2-)
+        fi
+      fi
+
+      if [ -n "${_found}" ] && ! _is_link_path "${_found}" && _is_valid_ssh_sock "${_found}"; then
+        echo "${_found}"
+        unset -v _found _u _p
+        return 0
+      fi
+
+      # Search common fallback paths
+      _u=$(id -u)
+      for _p in "/run/user/${_u}/keyring/ssh" "/run/user/${_u}/ssh-agent.socket" "/run/user/${_u}/openssh_agent" "/run/user/${_u}/gnupg/S.gpg-agent.ssh"; do
+        if ! _is_link_path "${_p}" && _is_valid_ssh_sock "${_p}"; then
+          echo "${_p}"
+          unset -v _found _u _p
+          return 0
+        fi
+      done
+
+      # Search /run/user/UID and /tmp for agent.* sockets
+      _search=""
+      for _d in "/run/user/${_u}" /tmp; do [ -d "${_d}" ] && _search="${_search} ${_d}"; done
+      if [ -n "${_search}" ]; then
+        for _p in $(find ${_search} -maxdepth 2 -type s -name 'agent.*' 2>/dev/null); do
+          if ! _is_link_path "${_p}" && _is_valid_ssh_sock "${_p}"; then
+            echo "${_p}"
+            unset -v _found _u _p _search _d
+            return 0
+          fi
+        done
+      fi
+
+      unset -v _found _u _p _search _d
+      return 1
+    }
+
+    # Function to reset SSH_AUTH_SOCK to the local ssh-agent
+    reset_ssh_socket() {
+      _rss_sock=$(get_local_ssh_agent_sock)
+      if [ -n "${_rss_sock}" ]; then
+        _rss_link="${HOME}/.ssh/ssh_auth_sock"
+        mkdir -p "$(dirname "${_rss_link}")"
+        ln -sf "${_rss_sock}" "${_rss_link}"
+        export SSH_AUTH_SOCK="${_rss_link}"
+        if command -v systemctl >/dev/null 2>&1; then
+          systemctl --user set-environment SSH_AUTH_SOCK="${_rss_link}" 2>/dev/null
+        fi
+        echo "Reset SSH_AUTH_SOCK to ${_rss_link} -> ${_rss_sock}"
+        unset -v _rss_sock _rss_link
+        return 0
+      else
+        echo "reset_ssh_socket: no valid local ssh-agent socket found." >&2
+        unset -v _rss_sock
+        return 1
+      fi
+    }
+
     _CANDIDATE=""
 
     # 1. If current environment has a valid socket that is NOT our link, it's a prime candidate
     # (e.g. fresh SSH login: sshd sets SSH_AUTH_SOCK to the raw forwarded socket before ssh/rc
     # rewrites it to the stable symlink; the shell inherits the original raw path).
-if [ -S "${SSH_AUTH_SOCK:-}" ] && ! _is_link_path "${SSH_AUTH_SOCK}"; then
+    if ! _is_link_path "${SSH_AUTH_SOCK:-}" && _is_valid_ssh_sock "${SSH_AUTH_SOCK:-}"; then
       _CANDIDATE="${SSH_AUTH_SOCK}"
     fi
 
     # 2. Only look for a system agent if the stable link is already broken. If the link is
     # valid (e.g. a tmux pane where SSH_AUTH_SOCK points to our symlink which ssh/rc just
     # updated to the forwarded socket), leave it alone — don't clobber it with a local agent.
-if [ -z "${_CANDIDATE}" ] && [ ! -S "${_SSH_AUTH_LINK}" ]; then
+    if [ -z "${_CANDIDATE}" ] && ! _is_valid_ssh_sock "${_SSH_AUTH_LINK}"; then
-  _FOUND=""
+      _CANDIDATE=$(get_local_ssh_agent_sock)
-  if [ "$(uname)" = "Darwin" ]; then
-    _FOUND=$(launchctl getenv SSH_AUTH_SOCK 2>/dev/null)
-  elif command -v systemctl >/dev/null 2>&1; then
-    # Query systemd socket units directly to avoid environment overrides.
-    for _u in ssh-agent.socket openssh-agent.socket gcr-ssh-agent.socket gpg-agent-ssh.socket; do
-      _P=$(systemctl --user show "${_u}" -p Listen 2>/dev/null | cut -d= -f2- | cut -d' ' -f1)
-      if [ -S "${_P}" ]; then
-        _FOUND="${_P}"
-        break
-      fi
-    done
-    # Fallback to systemd environment
-    if [ -z "${_FOUND}" ] || _is_link_path "${_FOUND}"; then
-      _FOUND=$(systemctl --user show-environment 2>/dev/null | grep "^SSH_AUTH_SOCK=" | cut -d= -f2-)
-    fi
     fi
 
-  if [ -S "${_FOUND}" ] && ! _is_link_path "${_FOUND}"; then
+    # 3. Sync the stable link if we found a valid "real" socket.
-    _CANDIDATE="${_FOUND}"
+    if [ -n "${_CANDIDATE}" ] && ! _is_link_path "${_CANDIDATE}" && _is_valid_ssh_sock "${_CANDIDATE}"; then
-  fi
-fi
-
-# 3. Last resort: search common paths if we still don't have a candidate and the link is broken.
-if [ ! -S "${_CANDIDATE}" ] && [ ! -S "${_SSH_AUTH_LINK}" ]; then
-  _U=$(id -u)
-  for _p in "/run/user/${_U}/keyring/ssh" "/run/user/${_U}/ssh-agent.socket" "/run/user/${_U}/openssh_agent" "/run/user/${_U}/gnupg/S.gpg-agent.ssh"; do
-    if [ -S "${_p}" ] && ! _is_link_path "${_p}"; then
-      _CANDIDATE="${_p}"
-      break
-    fi
-  done
-  if [ -z "${_CANDIDATE}" ]; then
-    # Build search path list based on what actually exists
-    _SEARCH=""
-    for _d in "/run/user/${_U}" /tmp; do [ -d "${_d}" ] && _SEARCH="${_SEARCH} ${_d}"; done
-    if [ -n "${_SEARCH}" ]; then
-      _CANDIDATE=$(find ${_SEARCH} -maxdepth 2 -type s -name 'agent.*' 2>/dev/null | grep -F -v "${_SSH_AUTH_LINK}" | head -n 1)
-    fi
-  fi
-fi
-
-# 4. Sync the stable link if we found a valid "real" socket.
-if [ -S "${_CANDIDATE}" ] && ! _is_link_path "${_CANDIDATE}"; then
       mkdir -p "$(dirname "${_SSH_AUTH_LINK}")"
       ln -sf "${_CANDIDATE}" "${_SSH_AUTH_LINK}"
       export SSH_AUTH_SOCK="${_SSH_AUTH_LINK}"
@@ -176,17 +245,18 @@ if [ -S "${_CANDIDATE}" ] && ! _is_link_path "${_CANDIDATE}"; then
       if command -v systemctl >/dev/null 2>&1; then
         systemctl --user set-environment SSH_AUTH_SOCK="${_SSH_AUTH_LINK}" 2>/dev/null
       fi
-elif [ -S "${_SSH_AUTH_LINK}" ]; then
+    elif _is_valid_ssh_sock "${_SSH_AUTH_LINK}"; then
       # If we found nothing better but the link is valid, use it.
       export SSH_AUTH_SOCK="${_SSH_AUTH_LINK}"
     fi
 
-unset _SSH_AUTH_LINK _CANDIDATE _FOUND _T _P _U _u _SEARCH _d
+    unset _SSH_AUTH_LINK _CANDIDATE
-unset -f _is_link_path
+    ;;
+esac
 
 # Setup XDG-like dirs on MacOS
 # Based on https://leebyron.com/til/mac-xdg/
-if [ "$(uname)" = "Darwin" ] ; then
+if [ "${_UNAME}" = "Darwin" ] ; then
   export XDG_BIN_HOME="${XDG_BIN_HOME:-$HOME/.local/bin}"
   export XDG_CACHE_HOME="${XDG_CACHE_HOME:-$HOME/Library/Caches}"
   export XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
@@ -195,10 +265,12 @@ if [ "$(uname)" = "Darwin" ] ; then
   export XDG_RUNTIME_DIR="${XDG_RUNTIME_DIR:-$TMPDIR/runtime-$(id -u)}"
   export XDG_STATE_HOME="${XDG_STATE_HOME:-$HOME/.local/state}"
   export PATH="${HOME}/bin/macos:${PATH}"
-elif [ "$(uname)" = "Linux" ] ; then
+elif [ "${_UNAME}" = "Linux" ] ; then
   export PATH="${HOME}/bin/linux:${PATH}"
 fi
 
+unset _UNAME
+
 if test -e "$HOME/.localenv"; then
   # shellcheck source=/dev/null
   . "$HOME/.localenv"

dotfiles/zshrc

@@ -1,8 +1,11 @@
 # For interactive shells
 [[ -n "$ZSH_PROFILE" ]] && {
   zmodload zsh/datetime
-  zshrc_start_time=$EPOCHREALTIME
   zmodload zsh/zprof
+  export PS4='+[%D{%f} / %D{%s.%N}] %N:%i> '
+  exec 3>&2 2>/tmp/zsh_startup.log
+  set -x
+  zshrc_start_time=$EPOCHREALTIME
 }
 HISTFILE=~/.zhistory
 HISTSIZE=10000
@@ -129,7 +132,12 @@ case $TERM in
       else
         # this will also work in tmux but is not what we want
         # Set the terminal title to include the command being run
+        # Skip adding (cmd) in iTerm2 — shell integration already injects the job name
+        if [[ -z "$ITERM_SESSION_ID" ]]; then
           print -Pn "\e]0;%n@%m: %~ ($cmd)\a"
+        else
+          print -Pn "\e]0;%n@%m: %~\a"
+        fi
       fi
     }
     # Add the hooks to zsh
@@ -298,6 +306,8 @@ typeset -U PATH
 
 if [[ -n "$ZSH_PROFILE" ]]; then
   zshrc_end_time=$EPOCHREALTIME
+  set +x
+  exec 2>&3 3>&-
   # Calculation in ms using zsh floating point math
   elapsed_ms=$(( (zshrc_end_time - zshrc_start_time) * 1000 ))
   printf "zshrc done: %.0fms\n" "$elapsed_ms"

dotfiles/zshrc.d/completions.zsh

@@ -14,4 +14,8 @@
   have_command docker && \
     missing_comp _docker && \
     docker completion zsh > $COMPDIR/_docker || true
+
+  have_command resticprofile && \
+    missing_comp _resticprofile && \
+    resticprofile generate --zsh-completion > $COMPDIR/_resticprofile || true
 } &>/dev/null &!

dotfiles/zshrc.d/functions.zsh

@@ -72,3 +72,27 @@ function generate_secure_key {
   local BYTES=$((BITS/8))
   head -c "${BYTES}" /dev/urandom | ${(s: :)ENCODE}
 }
+
+function reset-ssh-socket {
+  reset_ssh_socket "$@"
+}
+
+function with-local-ssh-agent {
+  local sock
+  sock=$(get_local_ssh_agent_sock)
+  if [[ -z "${sock}" ]] ; then
+    echo "with-local-ssh-agent: no valid local ssh-agent socket found." >&2
+    return 1
+  fi
+  if [ "$#" -eq 0 ] ; then
+    (
+      export SSH_AUTH_SOCK="${sock}"
+      "${SHELL:-zsh}"
+    )
+  else
+    (
+      export SSH_AUTH_SOCK="${sock}"
+      eval "$@"
+    )
+  fi
+}

install.sh

@@ -151,12 +151,12 @@ read_saved_prefs() {
 
 save_prefs() {
   [[ "$SAVE" = 1 ]] || return 0
-  local pref_file=${BASEDIR}/.installed-prefs
+  local pref_file="${BASEDIR}/.installed-prefs"
   {
-    echo "BASEDIR=\"${BASEDIR}\""
+    printf 'BASEDIR=%q\n' "${BASEDIR}"
-    echo "MINIMAL=\"${MINIMAL}\""
+    printf 'MINIMAL=%q\n' "${MINIMAL}"
-    echo "INSTALL_KEYS=\"${INSTALL_KEYS}\""
+    printf 'INSTALL_KEYS=%q\n' "${INSTALL_KEYS}"
-    echo "VERBOSE=\"${VERBOSE}\""
+    printf 'VERBOSE=%q\n' "${VERBOSE}"
   } >| "$pref_file"
 }
 
@@ -205,8 +205,7 @@ install_starship() {
     echo "apt-get install starship failed, installing locally" >&2
   fi
   local tmpd
-  tmpd="$(mktemp -d tmp.starship.XXXXXX)" || return 1
+  tmpd="$(mktemp -d "${TMPDIR:-/tmp}/starship.XXXXXX")" || return 1
-  trap '[[ -n "${tmpd}" && -d "${tmpd}" ]] && rm -rf "${tmpd}"' EXIT
 
   local install_path="${tmpd}/install.sh"
   if have_command curl ; then
@@ -216,7 +215,6 @@ install_starship() {
   else
     echo "No curl or wget available!!" >&2
     rm -rf "${tmpd}"
-    trap - EXIT
     return 1
   fi
   local dl_hash
@@ -225,20 +223,17 @@ install_starship() {
     echo "Hash check failed!!" >&2
     echo "Expected: ${STARSHIP_INSTALL_HASH}, got ${dl_hash} on ${install_path}" >&2
     rm -rf "${tmpd}"
-    trap - EXIT
     return 1
   fi
   if sudo_group ; then
     if maybe_sudo sh "${install_path}" ; then
       rm -rf "${tmpd}"
-      trap - EXIT
       return 0
     fi
     echo "root installation failed, falling back to user-local" >&2
   fi
   sh "${install_path}" -b "${LOCAL_BIN}"
   rm -rf "${tmpd}"
-  trap - EXIT
 }
 
 install_main() {