105 lines
2.5 KiB
Bash
105 lines
2.5 KiB
Bash
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#! /bin/sh
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set -euf
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: $nix_url
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: $nix_sha256
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{
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#
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# prepare host
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#
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type bzip2 2>/dev/null || yum install -y bzip2
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type rsync 2>/dev/null || yum install -y rsync
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if ! getent group nixbld >/dev/null; then
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groupadd -g 30000 -r nixbld
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fi
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for i in `seq 1 10`; do
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if ! getent passwd nixbld$i 2>/dev/null; then
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useradd \
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-c "CentOS Nix build user $i" \
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-d /var/empty \
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-g 30000 \
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-G 30000 \
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-l \
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-M \
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-s /sbin/nologin \
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-u $(expr 30000 + $i) \
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nixbld$i
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rm -f /var/spool/mail/nixbld$i
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fi
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done
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# generate fake sudo because
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# sudo: sorry, you must have a tty to run sudo
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mkdir -p bin
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printf '#! /bin/sh\nexec env "$@"\n' > bin/sudo
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chmod +x bin/sudo
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PATH=$PWD/bin:$PATH
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export PATH
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# install nix on host (cf. https://nixos.org/nix/install)
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if ! test -e /root/.nix-profile/etc/profile.d/nix.sh; then
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(
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verify() {
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echo $nix_sha256 $(basename $nix_url) | sha256sum -c
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}
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if ! verify; then
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curl -C - -O "$nix_url"
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verify
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fi
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)
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tar jxf $(basename $nix_url)
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$(basename $nix_url .tar.bz2)/install
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fi
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MANPATH=/var/empty . /root/.nix-profile/etc/profile.d/nix.sh
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if ! type nixos-install 2>/dev/null; then
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nixpkgs_expr='import <nixpkgs> { system = builtins.currentSystem; }'
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nixpkgs_path=$(find /nix/store -mindepth 1 -maxdepth 1 -name *-nixpkgs-* -type d)
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nix-env \
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--arg config "{ nix.package = ($nixpkgs_expr).nix; }" \
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--arg pkgs "$nixpkgs_expr" \
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--arg modulesPath 'throw "no modulesPath"' \
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-f $nixpkgs_path/nixpkgs/nixos/modules/installer/tools/tools.nix \
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-iA config.system.build.nixos-install
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fi
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#
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# mount install directory
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#
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if ! mount | grep -Fq '/dev/mapper/centos-root on /mnt type xfs'; then
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mkdir -p /newshit
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mount --bind /newshit /mnt
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fi
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if ! mount | grep -Fq '/dev/sda1 on /mnt/boot type xfs'; then
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mkdir -p /mnt/boot
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mount /dev/sda1 /mnt/boot
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fi
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if ! mount | grep -Fq '/dev/mapper/centos-root on /mnt/nix type xfs'; then
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mkdir -p /mnt/nix
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mount --bind /nix /mnt/nix
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fi
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mount | grep 'on /mnt\>' >&2
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#
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# prepare install directory
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#
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# XXX This should be done by (?)
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# remote_dir=/mnt ./cac pushconfig servername:c731445864-cloudpro-134581046 rmdir
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mkdir -p /mnt/etc/nixos
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mkdir -m 0555 -p /mnt/var/empty
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# add eye candy
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address=$(echo $SSH_CONNECTION | awk '{print$3}')
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echo 'PS1='\''\[\e[1;31m\]\u@'"$address"'\[\e[m\] \[\e[1;32m\]\w\[\e[m\] '\' > .bashrc
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}
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