mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-22 22:16:16 +02:00
eec5409a69
The current behaviour modifies the first writeable file from amongst .bash_profile, .bash_login and .profile. So .bash_profile (if it is writable) would be modified even if a user has already sourced nix.sh in, say, .profile. This commit introduces a new environment variable, NIX_INSTALLER_NO_MODIFY_PROFILE. If this is set during installation, then the modifications are unconditionally skipped. This is useful for users who have a manually curated set of dotfiles that they are porting to a new machine. In such scenarios, nix.sh is already sourced at a place where the user prefers. Without this change, the nix installer would insist on modifying .bash_profile if it exists. This commit also add documentations for both the current behaviour and the new override.
132 lines
3.4 KiB
Bash
132 lines
3.4 KiB
Bash
#!/bin/sh
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set -e
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dest="/nix"
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self="$(dirname "$0")"
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nix="@nix@"
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cacert="@cacert@"
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if ! [ -e $self/.reginfo ]; then
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echo "$0: incomplete installer (.reginfo is missing)" >&2
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exit 1
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fi
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if [ -z "$USER" ]; then
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echo "$0: \$USER is not set" >&2
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exit 1
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fi
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if [ "$(id -u)" -eq 0 ]; then
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printf '\e[1;31mwarning: installing Nix as root is not supported by this script!\e[0m\n'
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fi
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echo "performing a single-user installation of Nix..." >&2
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if ! [ -e $dest ]; then
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cmd="mkdir -m 0755 $dest && chown $USER $dest"
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echo "directory $dest does not exist; creating it by running '$cmd' using sudo" >&2
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if ! sudo sh -c "$cmd"; then
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echo "$0: please manually run ‘$cmd’ as root to create $dest" >&2
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exit 1
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fi
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fi
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if ! [ -w $dest ]; then
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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
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exit 1
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fi
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mkdir -p $dest/store
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echo -n "copying Nix to $dest/store..." >&2
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for i in $(cd $self/store >/dev/null && echo *); do
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echo -n "." >&2
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i_tmp="$dest/store/$i.$$"
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if [ -e "$i_tmp" ]; then
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rm -rf "$i_tmp"
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fi
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if ! [ -e "$dest/store/$i" ]; then
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cp -Rp "$self/store/$i" "$i_tmp"
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chmod -R a-w "$i_tmp"
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chmod +w "$i_tmp"
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mv "$i_tmp" "$dest/store/$i"
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chmod -w "$dest/store/$i"
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fi
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done
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echo "" >&2
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echo "initialising Nix database..." >&2
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if ! $nix/bin/nix-store --init; then
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echo "$0: failed to initialize the Nix database" >&2
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exit 1
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fi
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if ! $nix/bin/nix-store --load-db < $self/.reginfo; then
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echo "$0: unable to register valid paths" >&2
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exit 1
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fi
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. $nix/etc/profile.d/nix.sh
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if ! $nix/bin/nix-env -i "$nix"; then
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echo "$0: unable to install Nix into your default profile" >&2
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exit 1
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fi
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# Install an SSL certificate bundle.
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if [ -z "$NIX_SSL_CERT_FILE" -o ! -f "$NIX_SSL_CERT_FILE" ]; then
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$nix/bin/nix-env -i "$cacert"
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export NIX_SSL_CERT_FILE="$HOME/.nix-profile/etc/ssl/certs/ca-bundle.crt"
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fi
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# Subscribe the user to the Nixpkgs channel and fetch it.
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if ! $nix/bin/nix-channel --list | grep -q "^nixpkgs "; then
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$nix/bin/nix-channel --add https://nixos.org/channels/nixpkgs-unstable
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fi
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if [ -z "$_NIX_INSTALLER_TEST" ]; then
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$nix/bin/nix-channel --update nixpkgs
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fi
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added=
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if [ -z "$NIX_INSTALLER_NO_MODIFY_PROFILE" ]; then
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# Make the shell source nix.sh during login.
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p=$HOME/.nix-profile/etc/profile.d/nix.sh
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for i in .bash_profile .bash_login .profile; do
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fn="$HOME/$i"
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if [ -w "$fn" ]; then
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if ! grep -q "$p" "$fn"; then
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echo "modifying $fn..." >&2
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echo "if [ -e $p ]; then . $p; fi # added by Nix installer" >> $fn
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fi
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added=1
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break
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fi
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done
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fi
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if [ -z "$added" ]; then
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cat >&2 <<EOF
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Installation finished! To ensure that the necessary environment
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variables are set, please add the line
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. $p
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to your shell profile (e.g. ~/.profile).
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EOF
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else
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cat >&2 <<EOF
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Installation finished! To ensure that the necessary environment
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variables are set, either log in again, or type
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. $p
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in your shell.
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EOF
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fi
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