58 lines
1.5 KiB
Bash
58 lines
1.5 KiB
Bash
#! /bin/sh
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set -efu
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nix_url=https://nixos.org/releases/nix/nix-1.10/nix-1.10-x86_64-linux.tar.bz2
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nix_sha256=504f7a3a85fceffb8766ae5e1005de9e02e489742f5a63cc3e7552120b138bf4
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install_nix() {(
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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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printf '%s %s\n' $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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nix_src_dir=$(basename $nix_url .tar.bz2)
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tar jxf $nix_src_dir.tar.bz2
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mkdir -v -m 0755 -p /nix
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$nix_src_dir/install
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fi
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#TODO: make this general or move to prepare
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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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. /root/.nix-profile/etc/profile.d/nix.sh
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for i in \
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bash \
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coreutils \
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# This line intentionally left blank.
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do
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if ! nix-env -q $i | grep -q .; then
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nix-env -iA nixpkgs.pkgs.$i
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fi
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done
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# install nixos-install
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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 $nixpkgs_path/nixpkgs/nixos/modules/installer/tools/tools.nix \
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-iA config.system.build.nixos-install
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fi
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)}
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install_nix "$@"
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