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lix/scripts/install-nix-from-closure.sh

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#!/bin/sh
set -e
dest="/nix"
self="$(dirname "$0")"
nix="@nix@"
cacert="@cacert@"
# macOS support for 10.10 or higher
if [[ "$(uname -s)" = "Darwin" && $(($(sw_vers -productVersion | cut -d '.' -f 2))) -lt 10 ]]; then
echo "$0: macOS $(sw_vers -productVersion) is not supported, upgrade to 10.10 or higher"
exit 1
fi
if ! [ -e "$self/.reginfo" ]; then
echo "$0: incomplete installer (.reginfo is missing)" >&2
exit 1
fi
if [ -z "$USER" ]; then
echo "$0: \$USER is not set" >&2
exit 1
fi
if [ "$(id -u)" -eq 0 ]; then
printf '\e[1;31mwarning: installing Nix as root is not supported by this script!\e[0m\n'
fi
echo "performing a single-user installation of Nix..." >&2
if ! [ -e $dest ]; then
cmd="mkdir -m 0755 $dest && chown $USER $dest"
echo "directory $dest does not exist; creating it by running '$cmd' using sudo" >&2
if ! sudo sh -c "$cmd"; then
echo "$0: please manually run $cmd as root to create $dest" >&2
exit 1
fi
fi
if ! [ -w $dest ]; then
echo "$0: directory $dest exists, but is not writable by you. This could indicate that another user has already performed a single-user installation of Nix on this system. If you wish to enable multi-user support see http://nixos.org/nix/manual/#ssec-multi-user. If you wish to continue with a single-user install for $USER please run chown -R $USER $dest as root." >&2
exit 1
fi
mkdir -p $dest/store
printf "copying Nix to %s..." "${dest}/store" >&2
for i in $(cd "$self/store" >/dev/null && echo ./*); do
printf "." >&2
i_tmp="$dest/store/$i.$$"
if [ -e "$i_tmp" ]; then
rm -rf "$i_tmp"
fi
if ! [ -e "$dest/store/$i" ]; then
cp -Rp "$self/store/$i" "$i_tmp"
chmod -R a-w "$i_tmp"
chmod +w "$i_tmp"
mv "$i_tmp" "$dest/store/$i"
chmod -w "$dest/store/$i"
fi
done
echo "" >&2
echo "initialising Nix database..." >&2
if ! $nix/bin/nix-store --init; then
echo "$0: failed to initialize the Nix database" >&2
exit 1
fi
if ! "$nix/bin/nix-store" --load-db < "$self/.reginfo"; then
echo "$0: unable to register valid paths" >&2
exit 1
fi
. "$nix/etc/profile.d/nix.sh"
if ! "$nix/bin/nix-env" -i "$nix"; then
echo "$0: unable to install Nix into your default profile" >&2
exit 1
fi
# Install an SSL certificate bundle.
if [ -z "$NIX_SSL_CERT_FILE" ] || ! [ -f "$NIX_SSL_CERT_FILE" ]; then
$nix/bin/nix-env -i "$cacert"
export NIX_SSL_CERT_FILE="$HOME/.nix-profile/etc/ssl/certs/ca-bundle.crt"
fi
# Subscribe the user to the Nixpkgs channel and fetch it.
if ! $nix/bin/nix-channel --list | grep -q "^nixpkgs "; then
$nix/bin/nix-channel --add https://nixos.org/channels/nixpkgs-unstable
fi
if [ -z "$_NIX_INSTALLER_TEST" ]; then
$nix/bin/nix-channel --update nixpkgs
fi
added=
if [ -z "$NIX_INSTALLER_NO_MODIFY_PROFILE" ]; then
# Make the shell source nix.sh during login.
p=$HOME/.nix-profile/etc/profile.d/nix.sh
for i in .bash_profile .bash_login .profile; do
fn="$HOME/$i"
if [ -w "$fn" ]; then
if ! grep -q "$p" "$fn"; then
echo "modifying $fn..." >&2
echo "if [ -e $p ]; then . $p; fi # added by Nix installer" >> "$fn"
fi
added=1
break
fi
done
fi
if [ -z "$added" ]; then
cat >&2 <<EOF
Installation finished! To ensure that the necessary environment
variables are set, please add the line
. $p
to your shell profile (e.g. ~/.profile).
EOF
else
cat >&2 <<EOF
Installation finished! To ensure that the necessary environment
variables are set, either log in again, or type
. $p
in your shell.
EOF
fi