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nixpkgs/nixos/modules/installer/tools/nixos-enter.sh
Eelco Dolstra b6bac6c144
Revert "Merge pull request #48122 from zimbatm/pkg-nixos-rebuild"
This reverts commit 10addad603, reversing
changes made to 7786575c6c.

NixOS scripts should be kept in the NixOS source tree, not in
pkgs. Moving them around is just confusing and creates unnecessary
code/history churn.
2018-10-16 20:25:44 +02:00

62 lines
1.5 KiB
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#! @shell@
set -e
# Re-exec ourselves in a private mount namespace so that our bind
# mounts get cleaned up automatically.
if [ -z "$NIXOS_ENTER_REEXEC" ]; then
export NIXOS_ENTER_REEXEC=1
if [ "$(id -u)" != 0 ]; then
extraFlags="-r"
fi
exec unshare --fork --mount --uts --mount-proc --pid $extraFlags -- "$0" "$@"
else
mount --make-rprivate /
fi
mountPoint=/mnt
system=/nix/var/nix/profiles/system
command=($system/sw/bin/bash "--login")
while [ "$#" -gt 0 ]; do
i="$1"; shift 1
case "$i" in
--root)
mountPoint="$1"; shift 1
;;
--system)
system="$1"; shift 1
;;
--help)
exec man nixos-enter
exit 1
;;
--command|-c)
command=($system/sw/bin/bash "-c" "$1")
shift 1
;;
--)
command=("$@")
break
;;
*)
echo "$0: unknown option \`$i'"
exit 1
;;
esac
done
if [[ ! -e $mountPoint/etc/NIXOS ]]; then
echo "$0: '$mountPoint' is not a NixOS installation" >&2
exit 126
fi
mkdir -m 0755 -p "$mountPoint/dev" "$mountPoint/sys"
mount --rbind /dev "$mountPoint/dev"
mount --rbind /sys "$mountPoint/sys"
# Run the activation script. Set $LOCALE_ARCHIVE to supress some Perl locale warnings.
LOCALE_ARCHIVE=$system/sw/lib/locale/locale-archive chroot "$mountPoint" "$system/activate" >&2 || true
exec chroot "$mountPoint" "${command[@]}"