stockholm/krebs/4lib/infest/install-nix.sh
2015-10-01 02:19:13 +02:00

58 lines
1.5 KiB
Bash

#! /bin/sh
set -efu
nix_url=https://nixos.org/releases/nix/nix-1.10/nix-1.10-x86_64-linux.tar.bz2
nix_sha256=504f7a3a85fceffb8766ae5e1005de9e02e489742f5a63cc3e7552120b138bf4
install_nix() {(
# install nix on host (cf. https://nixos.org/nix/install)
if ! test -e /root/.nix-profile/etc/profile.d/nix.sh; then
(
verify() {
printf '%s %s\n' $nix_sha256 $(basename $nix_url) | sha256sum -c
}
if ! verify; then
curl -C - -O "$nix_url"
verify
fi
)
nix_src_dir=$(basename $nix_url .tar.bz2)
tar jxf $nix_src_dir.tar.bz2
mkdir -v -m 0755 -p /nix
$nix_src_dir/install
fi
#TODO: make this general or move to prepare
if ! mount | grep -Fq '/dev/mapper/centos-root on /mnt/nix type xfs'; then
mkdir -p /mnt/nix
mount --bind /nix /mnt/nix
fi
. /root/.nix-profile/etc/profile.d/nix.sh
for i in \
bash \
coreutils \
# This line intentionally left blank.
do
if ! nix-env -q $i | grep -q .; then
nix-env -iA nixpkgs.pkgs.$i
fi
done
# install nixos-install
if ! type nixos-install 2>/dev/null; then
nixpkgs_expr='import <nixpkgs> { system = builtins.currentSystem; }'
nixpkgs_path=$(find /nix/store -mindepth 1 -maxdepth 1 -name *-nixpkgs-* -type d)
nix-env \
--arg config "{ nix.package = ($nixpkgs_expr).nix; }" \
--arg pkgs "$nixpkgs_expr" \
--arg modulesPath 'throw "no modulesPath"' \
-f $nixpkgs_path/nixpkgs/nixos/modules/installer/tools/tools.nix \
-iA config.system.build.nixos-install
fi
)}
install_nix "$@"