.lib/nix/install

   1 #!/bin/sh
   2
   3 # This script installs the Nix package manager on your system by
   4 # downloading a binary distribution and running its installer script
   5 # (which in turn creates and populates /nix).
   6
   7 { # Prevent execution if this script was only partially downloaded
   8 oops() {
   9     echo "$0:" "$@" >&2
  10     exit 1
  11 }
  12
  13 tmpDir="$(mktemp -d -t nix-binary-tarball-unpack.XXXXXXXXXX || \
  14           oops "Can\'t create temporary directory for downloading the Nix binary tarball")"
  15 cleanup() {
  16     rm -rf "$tmpDir"
  17 }
  18 trap cleanup EXIT INT QUIT TERM
  19
  20 require_util() {
  21     type "$1" > /dev/null 2>&1 || which "$1" > /dev/null 2>&1 ||
  22         oops "you do not have '$1' installed, which I need to $2"
  23 }
  24
  25 case "$(uname -s).$(uname -m)" in
  26     Linux.x86_64) system=x86_64-linux; hash=3169d05aa713f6ffa774f001cae133557d3ad72e23d9b6f6ebbddd77b477304f;;
  27     Linux.i?86) system=i686-linux; hash=a2912d0cbc255941263dc5d784c9a665d6c50cef0882049bfd9a4fd912a57a20;;
  28     Linux.aarch64) system=aarch64-linux; hash=3b2878e2211984c2b95a081645e2ab90e2d971c9d2fbe18d70d8ce55a5abe67b;;
  29     Darwin.x86_64) system=x86_64-darwin; hash=d2b1487b2077fd51f61cd6a823775513d47ef10b7b82dd23d67dd534cb70e62f;;
  30     *) oops "sorry, there is no binary distribution of Nix for your platform";;
  31 esac
  32
  33 url="https://nixos.org/releases/nix/nix-2.1.3/nix-2.1.3-$system.tar.bz2"
  34
  35 tarball="$tmpDir/$(basename "$tmpDir/nix-2.1.3-$system.tar.bz2")"
  36
  37 require_util curl "download the binary tarball"
  38 require_util bzcat "decompress the binary tarball"
  39 require_util tar "unpack the binary tarball"
  40
  41 echo "downloading Nix 2.1.3 binary tarball for $system from '$url' to '$tmpDir'..."
  42 curl -L "$url" -o "$tarball" || oops "failed to download '$url'"
  43
  44 if type sha256sum > /dev/null 2>&1; then
  45     hash2="$(sha256sum -b "$tarball" | cut -c1-64)"
  46 elif type shasum > /dev/null 2>&1; then
  47     hash2="$(shasum -a 256 -b "$tarball" | cut -c1-64)"
  48 elif type openssl > /dev/null 2>&1; then
  49     hash2="$(openssl dgst -r -sha256 "$tarball" | cut -c1-64)"
  50 else
  51     oops "cannot verify the SHA-256 hash of '$url'; you need one of 'shasum', 'sha256sum', or 'openssl'"
  52 fi
  53
  54 if [ "$hash" != "$hash2" ]; then
  55     oops "SHA-256 hash mismatch in '$url'; expected $hash, got $hash2"
  56 fi
  57
  58 unpack=$tmpDir/unpack
  59 mkdir -p "$unpack"
  60 < "$tarball" bzcat | tar -xf - -C "$unpack" || oops "failed to unpack '$url'"
  61
  62 script=$(echo "$unpack"/*/install)
  63
  64 [ -e "$script" ] || oops "installation script is missing from the binary tarball!"
  65 "$script" "$@"
  66
  67 } # End of wrapping