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#!/bin/sh
# This script installs the Nix package manager on your system by
# downloading a binary distribution and running its installer script
# (which in turn creates and populates /nix).
{ # Prevent execution if this script was only partially downloaded
oops() {
echo "$0:" "$@" >&2
exit 1
}
umask 0022
tmpDir="$(mktemp -d -t nix-binary-tarball-unpack.XXXXXXXXXX || \
oops "Can't create temporary directory for downloading the Nix binary tarball")"
cleanup() {
rm -rf "$tmpDir"
}
trap cleanup EXIT INT QUIT TERM
require_util() {
command -v "$1" > /dev/null 2>&1 ||
oops "you do not have '$1' installed, which I need to $2"
}
case "$(uname -s).$(uname -m)" in
Linux.x86_64)
hash=@tarballHash_x86_64-linux@
path=@tarballPath_x86_64-linux@
system=x86_64-linux
;;
Linux.i?86)
hash=@tarballHash_i686-linux@
path=@tarballPath_i686-linux@
system=i686-linux
;;
Linux.aarch64)
hash=@tarballHash_aarch64-linux@
path=@tarballPath_aarch64-linux@
system=aarch64-linux
;;
Linux.armv6l_linux)
hash=@tarballHash_armv6l-linux@
path=@tarballPath_armv6l-linux@
system=armv6l-linux
;;
Linux.armv7l_linux)
hash=@tarballHash_armv7l-linux@
path=@tarballPath_armv7l-linux@
system=armv7l-linux
;;
Darwin.x86_64)
hash=@tarballHash_x86_64-darwin@
path=@tarballPath_x86_64-darwin@
system=x86_64-darwin
;;
Darwin.arm64|Darwin.aarch64)
hash=@binaryTarball_aarch64-darwin@
path=@tarballPath_aarch64-darwin@
system=aarch64-darwin
;;
*) oops "sorry, there is no binary distribution of Nix for your platform";;
esac
# Use this command-line option to fetch the tarballs using nar-serve or Cachix
if [ "${1:-}" = "--tarball-url-prefix" ]; then
if [ -z "${2:-}" ]; then
oops "missing argument for --tarball-url-prefix"
fi
url=${2}/${path}
shift 2
else
url=https://releases.nixos.org/nix/nix-@nixVersion@/nix-@nixVersion@-$system.tar.xz
fi
tarball=$tmpDir/nix-@nixVersion@-$system.tar.xz
require_util curl "download the binary tarball"
require_util tar "unpack the binary tarball"
if [ "$(uname -s)" != "Darwin" ]; then
require_util xz "unpack the binary tarball"
fi
echo "downloading Nix @nixVersion@ binary tarball for $system from '$url' to '$tmpDir'..."
curl -L "$url" -o "$tarball" || oops "failed to download '$url'"
if command -v sha256sum > /dev/null 2>&1; then
hash2="$(sha256sum -b "$tarball" | cut -c1-64)"
elif command -v shasum > /dev/null 2>&1; then
hash2="$(shasum -a 256 -b "$tarball" | cut -c1-64)"
elif command -v openssl > /dev/null 2>&1; then
hash2="$(openssl dgst -r -sha256 "$tarball" | cut -c1-64)"
else
oops "cannot verify the SHA-256 hash of '$url'; you need one of 'shasum', 'sha256sum', or 'openssl'"
fi
if [ "$hash" != "$hash2" ]; then
oops "SHA-256 hash mismatch in '$url'; expected $hash, got $hash2"
fi
unpack=$tmpDir/unpack
mkdir -p "$unpack"
tar -xJf "$tarball" -C "$unpack" || oops "failed to unpack '$url'"
script=$(echo "$unpack"/*/install)
[ -e "$script" ] || oops "installation script is missing from the binary tarball!"
export INVOKED_FROM_INSTALL_IN=1
"$script" "$@"
} # End of wrapping
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