status-react/nix/scripts/setup.sh

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#!/usr/bin/env bash
GIT_ROOT=$(cd "${BASH_SOURCE%/*}" && git rev-parse --show-toplevel)
source "${GIT_ROOT}/scripts/colors.sh"
NIX_VERSION="2.3.12"
NIX_INSTALL_URL="https://nixos.org/releases/nix/nix-${NIX_VERSION}/install"
NIX_INSTALL_SHA256="468a49a1cef293d59508bb3b62625dfcd99ec00334a14309f125cf8de513d5f1"
NIX_INSTALL_PATH="/tmp/nix-install-${NIX_VERSION}"
function install_nix() {
# Don't break people's profiles
export NIX_INSTALLER_NO_MODIFY_PROFILE=1
# Fix for installing on MacOS Catalina
export NIX_IGNORE_SYMLINK_STORE=1
# Download installer and verify SHA256
curl -s "${NIX_INSTALL_URL}" -o "${NIX_INSTALL_PATH}"
echo "${NIX_INSTALL_SHA256} ${NIX_INSTALL_PATH}" | sha256sum -c
chmod +x "${NIX_INSTALL_PATH}"
# Run the installer
"${NIX_INSTALL_PATH}" --no-daemon
if [ $? -eq 0 ]; then
echo -e "${GRN}The Nix package manager was successfully installed.${RST}"
else
echo -e "${RED}Failed to install Nix package manager!${RST}" >&2
echo "Please see: https://nixos.org/nix/manual/#chap-installation" >&2
exit 1
fi
}
if [[ ! -x "$(command -v git)" ]]; then
echo -e "${RED}The 'curl' utility is required for Nix installation.${RST}" >&2
exit 1
fi
if [[ "$(source /etc/os-release && echo "${NAME}")" == *NixOS* ]]; then
echo -e "${GRN}Already running NixOS.${RST}"
exit
fi
if [[ -x "$(command -v nix)" ]]; then
echo -e "${GRN}Nix package manager already installed.${RST}"
exit
fi
if [[ "${IN_NIX_SHELL}" == 'pure' ]]; then
echo -e "${GRN}Already in a pure Nix shell.${RST}"
exit
fi
# If none of the checks before succeeded we need to install Nix
echo -e "${GRN}Setting up Nix package manager...${RST}"
install_nix
echo -e "${YLW}See STARTING_GUIDE.md if you're new here.${RST}"