Sprite/getsprite at master · andyjost/Sprite · GitHub

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#!/bin/sh
# Install Sprite with uv; this file also works when piped into sh.
interactive=0
set -eu

usage() {
  cat <<'USAGE'
Usage: sh getsprite [--dry-run] [--help]
       sh getsprite-i [--dry-run] [--help]

Install or upgrade Sprite in your home directory, with its own Python.
--dry-run  Print the plan without running commands or asking for confirmation.
GETSPRITE_FIND_LINKS  Directory or URL of wheels, passed to uv as --find-links.
USAGE
}

dry_run=0
for arg do
  case "$arg" in
    --dry-run) dry_run=1 ;;
    -h|--help) usage; exit 0 ;;
    *) printf 'Unknown option: %s\n' "$arg" >&2; usage >&2; exit 2 ;;
  esac
done

plan() {
  cat <<'PLAN'
1. If uv is absent, install it in $HOME/.local/bin with the official installer:
   curl -LsSf https://astral.sh/uv/install.sh | sh
   (UV_INSTALL_DIR=$HOME/.local/bin; UV_NO_MODIFY_PATH=1)
2. Install or upgrade curry and its dependency curry-frontend in an isolated
   tool environment in your home directory. Download managed CPython 3.11.4
   or newer, below 3.16, if needed; leave the system Python alone:
   uv tool install --upgrade --managed-python --python 'cpython>=3.11.4,<3.16' --no-build --with-executables-from curry-frontend curry
   (UV_TOOL_BIN_DIR=$HOME/.local/bin)
PLAN
  if [ -n "${GETSPRITE_FIND_LINKS:-}" ]; then
    printf '   Additional wheel location (--find-links): %s\n' "$GETSPRITE_FIND_LINKS"
  fi
  cat <<'PLAN'
3. Add the commands sprite-exec and sprite-make to your PATH for this shell
   and put this line in your shell startup file:
   export PATH="$HOME/.local/bin:$PATH"
A C++ compiler (g++) is optional; without it new modules run interpreted.
PLAN
}

confirm() {
  if [ "$interactive" = 1 ]; then
    printf '%s [y/N] ' "$1"
    # The script may arrive on stdin from curl; answers come from the terminal.
    answer=
    if [ -t 0 ]; then
      read -r answer || answer=
    else
      read -r answer </dev/tty || answer=
    fi
    case "$answer" in
      y|Y|yes|YES) ;;
      *) printf '\nInstallation cancelled.\n'; exit 1 ;;
    esac
  fi
}

plan
if [ "$dry_run" = 1 ]; then
  exit 0
fi

# Keep command installation in the user's home and leave shell files untouched.
UV_TOOL_BIN_DIR=$HOME/.local/bin
export UV_TOOL_BIN_DIR
if command -v uv >/dev/null 2>&1; then
  uv=$(command -v uv)
elif [ -x "$HOME/.local/bin/uv" ]; then
  uv=$HOME/.local/bin/uv
else
  confirm 'Install uv?'
  UV_INSTALL_DIR=$HOME/.local/bin
  UV_NO_MODIFY_PATH=1
  export UV_INSTALL_DIR UV_NO_MODIFY_PATH
  curl -LsSf https://astral.sh/uv/install.sh | sh
  uv=$HOME/.local/bin/uv
  if [ ! -x "$uv" ]; then
    printf 'The uv installer did not install uv in $HOME/.local/bin.\n' >&2
    exit 1
  fi
fi

confirm 'Install or upgrade Sprite and its managed Python with uv?'
set -- tool install --upgrade --managed-python --python 'cpython>=3.11.4,<3.16' --no-build --with-executables-from curry-frontend curry
if [ -n "${GETSPRITE_FIND_LINKS:-}" ]; then
  set -- "$@" --find-links "$GETSPRITE_FIND_LINKS"
fi
"$uv" "$@"
printf '\nSprite installed. To use sprite-exec and sprite-make, run:\n'
printf '  export PATH="$HOME/.local/bin:$PATH"\n'