2020-11-05 22:52:20 +01:00
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[[ch-installation]]
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== Installing Home Manager
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:nix-darwin: https://github.com/LnL7/nix-darwin/
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Home Manager can be used in three primary ways:
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1. Using the standalone `home-manager` tool. For platforms other than
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NixOS and Darwin, this is the only available choice. It is also
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recommended for people on NixOS or Darwin that want to manage their
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home directory independent of the system as a whole. See
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<<sec-install-standalone>> for instructions on how to perform this
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installation.
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2. As a module within a NixOS system configuration. This allows the
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user profiles to be built together with the system when running
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`nixos-rebuild`. See <<sec-install-nixos-module>> for a description of
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this setup.
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3. As a module within a {nix-darwin}[nix-darwin] system configuration.
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This allows the user profiles to be built together with the system
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when running `darwin-rebuild`. See <<sec-install-nix-darwin-module>>
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for a description of this setup.
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[[sec-install-standalone]]
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=== Standalone installation
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:nix-allowed-users: https://nixos.org/nix/manual/#conf-allowed-users
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:nixos-allowed-users: https://nixos.org/nixos/manual/options.html#opt-nix.allowedUsers
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1. Make sure you have a working Nix installation. Specifically, make
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sure that your user is able to build and install Nix packages. For
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example, you should be able to successfully run a command like
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`nix-instantiate '<nixpkgs>' -A hello` without having to switch to the
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root user. For a multi-user install of Nix this means that your user
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must be covered by the {nix-allowed-users}[`allowed-users`] Nix
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option. On NixOS you can control this option using the
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{nixos-allowed-users}[`nix.allowedUsers`] system option.
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2020-12-19 01:29:32 +01:00
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2. Add the Home Manager channel that you wish to follow. If you are
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following Nixpkgs master or an unstable channel then this is done by
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running
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2020-11-05 22:52:20 +01:00
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[source,console]
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----
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$ nix-channel --add https://github.com/nix-community/home-manager/archive/master.tar.gz home-manager
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$ nix-channel --update
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----
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+
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2020-12-19 01:29:32 +01:00
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and if you follow a Nixpkgs version 20.09 channel, you can run
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2020-11-05 22:52:20 +01:00
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+
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[source,console]
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----
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$ nix-channel --add https://github.com/nix-community/home-manager/archive/release-20.09.tar.gz home-manager
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$ nix-channel --update
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----
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+
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On NixOS you may need to log out and back in for the channel to become
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available. On non-NixOS you may have to add
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[source,bash]
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export NIX_PATH=$HOME/.nix-defexpr/channels${NIX_PATH:+:}$NIX_PATH
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to your shell (see
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https://github.com/NixOS/nix/issues/2033[nix#2033]).
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3. Run the Home Manager installation command and create the first Home
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Manager generation:
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[source,console]
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$ nix-shell '<home-manager>' -A install
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Once finished, Home Manager should be active and available in your
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user environment.
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4. If you do not plan on having Home Manager manage your shell
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configuration then you must source the
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[source,bash]
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$HOME/.nix-profile/etc/profile.d/hm-session-vars.sh
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2020-12-13 17:25:45 +01:00
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file in your shell configuration. Alternatively source
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[source,bash]
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/etc/profiles/per-user/$USER/etc/profile.d/hm-session-vars.sh
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when managing home configuration together with system configuration.
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Unfortunately, we currently only support POSIX.2-like shells such as
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2020-11-05 22:52:20 +01:00
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https://www.gnu.org/software/bash/[Bash] or
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http://zsh.sourceforge.net/[Z shell].
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For example, if you use Bash then add
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[source,bash]
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----
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. "$HOME/.nix-profile/etc/profile.d/hm-session-vars.sh"
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----
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to your `~/.profile` file.
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If instead of using channels you want to run Home Manager from a Git
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checkout of the repository then you can use the
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<<opt-programs.home-manager.path>> option to specify the absolute path
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to the repository.
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[[sec-install-nixos-module]]
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=== NixOS module
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Home Manager provides a NixOS module that allows you to prepare user
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environments directly from the system configuration file, which often
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is more convenient than using the `home-manager` tool. It also opens
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up additional possibilities, for example, to automatically configure
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user environments in NixOS declarative containers or on systems
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deployed through NixOps.
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To make the NixOS module available for use you must `import` it into
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your system configuration. This is most conveniently done by adding a
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2020-12-19 01:29:32 +01:00
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Home Manager channel. For example, if you are following Nixpkgs master
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or an unstable channel, you can run
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2020-11-05 22:52:20 +01:00
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[source,console]
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----
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# nix-channel --add https://github.com/nix-community/home-manager/archive/master.tar.gz home-manager
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# nix-channel --update
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----
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2020-12-19 01:29:32 +01:00
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and if you follow a Nixpkgs version 20.09 channel, you can run
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2020-11-05 22:52:20 +01:00
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[source,console]
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----
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# nix-channel --add https://github.com/nix-community/home-manager/archive/release-20.09.tar.gz home-manager
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# nix-channel --update
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----
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It is then possible to add
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[source,nix]
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imports = [ <home-manager/nixos> ];
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to your system `configuration.nix` file, which will introduce a new
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NixOS option called `home-manager.users` whose type is an attribute
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set that maps user names to Home Manager configurations.
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For example, a NixOS configuration may include the lines
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[source,nix]
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----
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users.users.eve.isNormalUser = true;
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home-manager.users.eve = { pkgs, ... }: {
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home.packages = [ pkgs.atool pkgs.httpie ];
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programs.bash.enable = true;
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};
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----
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and after a `nixos-rebuild switch` the user eve's environment should
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include a basic Bash configuration and the packages atool and httpie.
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[NOTE]
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====
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By default packages will be installed to `$HOME/.nix-profile` but they
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can be installed to `/etc/profiles` if
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[source,nix]
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home-manager.useUserPackages = true;
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is added to the system configuration. This is necessary if, for
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example, you wish to use `nixos-rebuild build-vm`. This option may
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become the default value in the future.
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====
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[NOTE]
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====
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By default, Home Manager uses a private `pkgs` instance that is
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configured via the `home-manager.users.<name>.nixpkgs` options. To
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instead use the global `pkgs` that is configured via the system level
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`nixpkgs` options, set
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[source,nix]
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home-manager.useGlobalPkgs = true;
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This saves an extra Nixpkgs evaluation, adds consistency, and removes
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the dependency on `NIX_PATH`, which is otherwise used for importing
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Nixpkgs.
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====
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[[sec-install-nix-darwin-module]]
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=== nix-darwin module
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Home Manager provides a module that allows you to prepare user
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environments directly from the {nix-darwin}[nix-darwin] configuration
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file, which often is more convenient than using the `home-manager`
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tool.
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To make the NixOS module available for use you must `import` it into
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your system configuration. This is most conveniently done by adding a
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2020-12-19 01:29:32 +01:00
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Home Manager channel. For example, if you are following Nixpkgs master
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or an unstable channel, you can run
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2020-11-05 22:52:20 +01:00
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[source,console]
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----
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# nix-channel --add https://github.com/nix-community/home-manager/archive/master.tar.gz home-manager
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# nix-channel --update
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----
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2020-12-19 01:29:32 +01:00
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and if you follow a Nixpkgs version 20.09 channel, you can run
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2020-11-05 22:52:20 +01:00
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[source,console]
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----
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# nix-channel --add https://github.com/nix-community/home-manager/archive/release-20.09.tar.gz home-manager
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# nix-channel --update
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----
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It is then possible to add
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[source,nix]
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imports = [ <home-manager/nix-darwin> ];
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to your nix-darwin `configuration.nix` file, which will introduce a
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new NixOS option called `home-manager` whose type is an attribute set
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that maps user names to Home Manager configurations.
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For example, a nix-darwin configuration may include the lines
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[source,nix]
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----
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home-manager.users.eve = { pkgs, ... }: {
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home.packages = [ pkgs.atool pkgs.httpie ];
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programs.bash.enable = true;
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};
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----
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and after a `darwin-rebuild --switch` the user eve's environment
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should include a basic Bash configuration and the packages atool and
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httpie.
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[NOTE]
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====
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By default user packages will not be ignored in favor of
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`environment.systemPackages`, but they will be intalled to
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`/etc/profiles/per-user/$USERNAME` if
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[source,nix]
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home-manager.useUserPackages = true;
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is added to the nix-darwin configuration. This option may become the
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default value in the future.
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====
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[NOTE]
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====
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By default, Home Manager uses a private `pkgs` instance that is
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configured via the `home-manager.users.<name>.nixpkgs` options. To
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instead use the global `pkgs` that is configured via the system level
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`nixpkgs` options, set
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[source,nix]
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home-manager.useGlobalPkgs = true;
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This saves an extra Nixpkgs evaluation, adds consistency, and removes
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the dependency on `NIX_PATH`, which is otherwise used for importing
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Nixpkgs.
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====
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