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|
#! /bin/sh
set -euf
: $nix_url
: $nix_sha256
{
#
# prepare host
#
type bzip2 2>/dev/null || yum install -y bzip2
type rsync 2>/dev/null || yum install -y rsync
if ! getent group nixbld >/dev/null; then
groupadd -g 30000 -r nixbld
fi
for i in `seq 1 10`; do
if ! getent passwd nixbld$i 2>/dev/null; then
useradd \
-c "CentOS Nix build user $i" \
-d /var/empty \
-g 30000 \
-G 30000 \
-l \
-M \
-s /sbin/nologin \
-u $(expr 30000 + $i) \
nixbld$i
rm -f /var/spool/mail/nixbld$i
fi
done
# generate fake sudo because
# sudo: sorry, you must have a tty to run sudo
mkdir -p bin
printf '#! /bin/sh\nexec env "$@"\n' > bin/sudo
chmod +x bin/sudo
PATH=$PWD/bin:$PATH
export PATH
# install nix on host (cf. https://nixos.org/nix/install)
if ! test -e /root/.nix-profile/etc/profile.d/nix.sh; then
(
verify() {
echo $nix_sha256 $(basename $nix_url) | sha256sum -c
}
if ! verify; then
curl -C - -O "$nix_url"
verify
fi
)
tar jxf $(basename $nix_url)
$(basename $nix_url .tar.bz2)/install
fi
MANPATH=/var/empty . /root/.nix-profile/etc/profile.d/nix.sh
if ! type nixos-install 2>/dev/null; then
nixpkgs_expr='import <nixpkgs> { system = builtins.currentSystem; }'
nixpkgs_path=$(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 $nixpkgs_path/nixpkgs/nixos/modules/installer/tools/tools.nix \
-iA config.system.build.nixos-install
fi
#
# mount install directory
#
if ! mount | grep -Fq '/dev/mapper/centos-root on /mnt type xfs'; then
mkdir -p /newshit
mount --bind /newshit /mnt
fi
if ! mount | grep -Fq '/dev/sda1 on /mnt/boot type xfs'; then
mkdir -p /mnt/boot
mount /dev/sda1 /mnt/boot
fi
if ! mount | grep -Fq '/dev/mapper/centos-root on /mnt/nix type xfs'; then
mkdir -p /mnt/nix
mount --bind /nix /mnt/nix
fi
mount | grep 'on /mnt\>' >&2
#
# prepare install directory
#
# XXX This should be done by (?)
# remote_dir=/mnt ./cac pushconfig servername:c731445864-cloudpro-134581046 rmdir
mkdir -p /mnt/etc/nixos
mkdir -m 0555 -p /mnt/var/empty
# add eye candy
address=$(echo $SSH_CONNECTION | awk '{print$3}')
echo 'PS1='\''\[\e[1;31m\]\u@'"$address"'\[\e[m\] \[\e[1;32m\]\w\[\e[m\] '\' > .bashrc
}
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