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Move installer script from nixos-homepage

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Eelco Dolstra 2018-05-30 17:17:50 +02:00
parent 3be58fe1bc
commit 4caaa4c5fe
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1 changed files with 67 additions and 0 deletions
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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
}
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() {
type "$1" > /dev/null 2>&1 || which "$1" > /dev/null 2>&1 ||
oops "you do not have '$1' installed, which I need to $2"
}
case "$(uname -s).$(uname -m)" in
Linux.x86_64) system=x86_64-linux; hash=[%nix_hash_x86_64_linux%];;
Linux.i?86) system=i686-linux; hash=[%nix_hash_i686_linux%];;
Linux.aarch64) system=aarch64-linux; hash=[%nix_hash_aarch64_linux%];;
Darwin.x86_64) system=x86_64-darwin; hash=[%nix_hash_x86_64_darwin%];;
*) oops "sorry, there is no binary distribution of Nix for your platform";;
esac
url="https://nixos.org/releases/nix/nix-[%latestNixVersion%]/nix-[%latestNixVersion%]-$system.tar.bz2"
tarball="$tmpDir/$(basename "$tmpDir/nix-[%latestNixVersion%]-$system.tar.bz2")"
require_util curl "download the binary tarball"
require_util bzcat "decompress the binary tarball"
require_util tar "unpack the binary tarball"
echo "downloading Nix [%latestNixVersion%] binary tarball for $system from '$url' to '$tmpDir'..."
curl -L "$url" -o "$tarball" || oops "failed to download '$url'"
if type sha256sum > /dev/null 2>&1; then
hash2="$(sha256sum -b "$tarball" | cut -c1-64)"
elif type shasum > /dev/null 2>&1; then
hash2="$(shasum -a 256 -b "$tarball" | cut -c1-64)"
elif type 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 "$unpack"
< "$tarball" bzcat | tar -xf - -C "$unpack" || oops "failed to unpack '$url'"
script=$(echo "$unpack"/*/install)
[ -e "$script" ] || oops "installation script is missing from the binary tarball!"
"$script" "$@"
} # End of wrapping