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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