[Nix-dev] [PATCH 1/2] nixos-install: Fix password prompt failing outside NixOS.

[Jookia]

When bootstrapping from other distributions, nixos-install is unable to find
various tools in the chroot since their paths aren't aware of NixOS conventions.

This makes a small change to existing code by specifying nixpkgs/nixos instead
of just nixos when running nix-instantiate in the chroot. I haven't tested this
outside of bootstrapping, but the same specification is used elsewhere in the
code so I don't see why it wouldn't work.
---
 nixos/modules/installer/tools/nixos-install.sh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/installer/tools/nixos-install.sh b/nixos/modules/installer/tools/nixos-install.sh
index 14ae3da..86e57f7 100644
--- a/nixos/modules/installer/tools/nixos-install.sh
+++ b/nixos/modules/installer/tools/nixos-install.sh
@@ -254,8 +254,14 @@ NIXOS_INSTALL_GRUB=1 chroot $mountPoint \
 chroot $mountPoint /nix/var/nix/profiles/system/activate
 
 
+# Some systems may not be prepared to use NixOS' paths.
+export PATH=/run/current-system/sw/bin:/run/current-system/sw/sbin:$PATH
+export NIX_PATH=/nix/var/nix/profiles/per-user/root/channels/nixos:nixpkgs=/etc/nixos/nixpkgs
+export NIX_PATH=$NIX_PATH:nixos-config=/etc/nixos/configuration.nix:/nix/var/nix/profiles/per-user/root/channels
+
+
 # Ask the user to set a root password.
-if [ "$(chroot $mountPoint nix-instantiate --eval '<nixos>' -A config.users.mutableUsers)" = true ] && [ -t 0 ] ; then
+if [ "$(chroot $mountPoint nix-instantiate --eval '<nixpkgs/nixos>' -A config.users.mutableUsers)" = true ] && [ -t 1 ] ; then
     echo "setting root password..."
     chroot $mountPoint /var/setuid-wrappers/passwd
 fi
-- 
2.3.6