29027fd1e1
Using pkgs.lib on the spine of module evaluation is problematic because the pkgs argument depends on the result of module evaluation. To prevent an infinite recursion, pkgs and some of the modules are evaluated twice, which is inefficient. Using ‘with lib’ prevents this problem.
67 lines
1.9 KiB
Nix
67 lines
1.9 KiB
Nix
# This module defines a standard configuration for NixOS shells.
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{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.environment;
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in
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{
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config = {
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environment.shellAliases =
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{ ls = "ls --color=tty";
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ll = "ls -l";
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l = "ls -alh";
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};
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environment.shellInit =
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''
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# Set up the per-user profile.
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mkdir -m 0755 -p $NIX_USER_PROFILE_DIR
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if test "$(stat --printf '%u' $NIX_USER_PROFILE_DIR)" != "$(id -u)"; then
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echo "WARNING: bad ownership on $NIX_USER_PROFILE_DIR" >&2
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fi
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if test -w $HOME; then
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if ! test -L $HOME/.nix-profile; then
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if test "$USER" != root; then
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ln -s $NIX_USER_PROFILE_DIR/profile $HOME/.nix-profile
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else
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# Root installs in the system-wide profile by default.
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ln -s /nix/var/nix/profiles/default $HOME/.nix-profile
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fi
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fi
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# Subscribe the root user to the NixOS channel by default.
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if [ "$USER" = root -a ! -e $HOME/.nix-channels ]; then
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echo "${config.system.defaultChannel} nixos" > $HOME/.nix-channels
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fi
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# Create the per-user garbage collector roots directory.
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NIX_USER_GCROOTS_DIR=/nix/var/nix/gcroots/per-user/$USER
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mkdir -m 0755 -p $NIX_USER_GCROOTS_DIR
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if test "$(stat --printf '%u' $NIX_USER_GCROOTS_DIR)" != "$(id -u)"; then
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echo "WARNING: bad ownership on $NIX_USER_GCROOTS_DIR" >&2
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fi
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# Set up a default Nix expression from which to install stuff.
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if [ ! -e $HOME/.nix-defexpr -o -L $HOME/.nix-defexpr ]; then
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rm -f $HOME/.nix-defexpr
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mkdir $HOME/.nix-defexpr
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if [ "$USER" != root ]; then
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ln -s /nix/var/nix/profiles/per-user/root/channels $HOME/.nix-defexpr/channels_root
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fi
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fi
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fi
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'';
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};
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}
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