Skip to content

Instantly share code, notes, and snippets.

@benley
Created January 6, 2015 07:57
Show Gist options
  • Save benley/e4a91e8425993e7d6668 to your computer and use it in GitHub Desktop.
Save benley/e4a91e8425993e7d6668 to your computer and use it in GitHub Desktop.
tweaked nix login script
# Heavily cribbed from the equivalent NixOS login script.
# This should work better with multi-user nix setups.
export NIXPKGS_CONFIG="/etc/nix/nixpkgs-config.nix"
export NIX_OTHER_STORES="/run/nix/remote-stores/*/nix"
export NIX_USER_PROFILE_DIR="/nix/var/nix/profiles/per-user/$USER"
export NIX_PROFILES="/nix/var/nix/profiles/default $HOME/.nix-profile"
export NIX_PATH="/nix/var/nix/profiles/per-user/root/channels"
export PATH="$HOME/.nix-profile/bin:$HOME/.nix-profile/sbin:/nix/var/nix/profiles/default/bin:/nix/var/nix/profiles/default/sbin:$PATH"
# Use the nix daemon for multi-user builds
if [ "$USER" != root -o ! -w /nix/var/nix/db ]; then
export NIX_REMOTE=daemon
fi
# Set up the per-user profile.
mkdir -m 0755 -p "$NIX_USER_PROFILE_DIR"
if test "$(stat --printf '%u' "$NIX_USER_PROFILE_DIR")" != "$(id -u)"; then
echo "WARNING: bad ownership on $NIX_USER_PROFILE_DIR" >&2
fi
if [ -w "$HOME" ]; then
# Set the default profile.
if ! [ -L "$HOME/.nix-profile" ]; then
if [ "$USER" != root ]; then
ln -s "$NIX_USER_PROFILE_DIR/profile" "$HOME/.nix-profile"
else
# Root installs in the system-wide profile by default.
ln -s /nix/var/nix/profiles/default "$HOME/.nix-profile"
fi
fi
# Create the per-user garbage collector roots directory.
NIX_USER_GCROOTS_DIR=/nix/var/nix/gcroots/per-user/$USER
mkdir -m 0755 -p "$NIX_USER_GCROOTS_DIR"
if test "$(stat --printf '%u' "$NIX_USER_GCROOTS_DIR")" != "$(id -u)"; then
echo "WARNING: bad ownership on $NIX_USER_GCROOTS_DIR" >&2
fi
# Set up a default Nix expression from which to install stuff.
if [ ! -e "$HOME/.nix-defexpr" -o -L "$HOME/.nix-defexpr" ]; then
rm -f "$HOME/.nix-defexpr"
mkdir "$HOME/.nix-defexpr"
if [ "$USER" != root ]; then
ln -s /nix/var/nix/profiles/per-user/root/channels "$HOME/.nix-defexpr/channels_root"
fi
fi
# Subscribe the to the Nixpkgs channel by default.
if [ ! -e "$HOME/.nix-channels" ]; then
echo "http://nixos.org/channels/nixpkgs-unstable nixpkgs" > "$HOME/.nix-channels"
fi
# Append ~/.nix-defexpr/channels/nixpkgs to $NIX_PATH so that
# <nixpkgs> paths work when the user has fetched the Nixpkgs
# channel.
export NIX_PATH="${NIX_PATH:+$NIX_PATH:}nixpkgs=$HOME/.nix-defexpr/channels/nixpkgs"
fi
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment