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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 command -v "$1" > /dev/null 2>&1 ||
22 oops "you do not have '$1' installed, which I need to $2"
23 }
24
25 case "$(uname -s).$(uname -m)" in
26 Linux.x86_64) system=x86_64-linux; hash=e43f6947d1f302b6193302889e7800f3e3dd4a650b6f929c668c894884a02701;;
27 Linux.i?86) system=i686-linux; hash=e1c6fa89a0d55a56cddb5f26598a15e0f238115423ad884a3673a3e4815fd33b;;
28 Linux.aarch64) system=aarch64-linux; hash=b31d50b34f2aeacdecbe97e56d5661b59b49ec84fa5ea3f8ddb022ab1bb5de56;;
29 Darwin.x86_64) system=x86_64-darwin; hash=972ff28bf5786a079856cba6941a6001046e4bdbc99cb2f114e6fce31b9265ba;;
30 *) oops "sorry, there is no binary distribution of Nix for your platform";;
31 esac
32
33 url="https://nixos.org/releases/nix/nix-2.3/nix-2.3-$system.tar.xz"
34
35 tarball="$tmpDir/$(basename "$tmpDir/nix-2.3-$system.tar.xz")"
36
37 require_util curl "download the binary tarball"
38 require_util tar "unpack the binary tarball"
39
40 echo "downloading Nix 2.3 binary tarball for $system from '$url' to '$tmpDir'..."
41 curl -L "$url" -o "$tarball" || oops "failed to download '$url'"
42
43 if command -v sha256sum > /dev/null 2>&1; then
44 hash2="$(sha256sum -b "$tarball" | cut -c1-64)"
45 elif command -v shasum > /dev/null 2>&1; then
46 hash2="$(shasum -a 256 -b "$tarball" | cut -c1-64)"
47 elif command -v openssl > /dev/null 2>&1; then
48 hash2="$(openssl dgst -r -sha256 "$tarball" | cut -c1-64)"
49 else
50 oops "cannot verify the SHA-256 hash of '$url'; you need one of 'shasum', 'sha256sum', or 'openssl'"
51 fi
52
53 if [ "$hash" != "$hash2" ]; then
54 oops "SHA-256 hash mismatch in '$url'; expected $hash, got $hash2"
55 fi
56
57 unpack=$tmpDir/unpack
58 mkdir -p "$unpack"
59 tar -xf "$tarball" -C "$unpack" || oops "failed to unpack '$url'"
60
61 script=$(echo "$unpack"/*/install)
62
63 [ -e "$script" ] || oops "installation script is missing from the binary tarball!"
64 "$script" "$@"
65
66 } # End of wrapping