this post was submitted on 14 Nov 2023
4 points (100.0% liked)

NixOS

992 readers
1 users here now

NixOS is a Linux distribution built on top of the Nix package manager. Its declarative configuration allows reliable system upgrades via several official channels of stability and size.

This community discusses NixOS, Nix, and everything related.

founded 1 year ago
MODERATORS
 

I want to use Plasma-manager in my system. I have enabled flakes in configurations. Now what to do to use it. The output generated by tool rc2nix can be copied through terminal but when i put that in home.nix , it says that plasma is not available which is true but then how do I use this tool. flake file.

you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 2 points 11 months ago (2 children)

First, you need to pass the plasma-manager input to your home-manager config in some way. I use the NixOS module for home-manager which I declare like this in my flake.nix (if you have a different setup, this might not be necessary or you have to do it in a slightly different way):

homeManagerModule = {
  imports = [home-manager.nixosModules.home-manager];
  home-manager.users.myusername = import ./home.nix;
  # This will give us access to the inputs in the home-manager config
  home-manager.extraSpecialArgs = {inherit inputs};
};

Now the home-manager config (in my case home.nix) can look like this:

{
  inputs,
  ...
}: {
  imports = [inputs.plasma-manager.homeManagerModules.plasma-manager];
  programs.plasma = {
    enable = true;
    # ...
}

You probably forgot to import the plasma-manager module into home-manager. If you want to have a cleaner setup, I'd also recommend against just copying the complete output of rc2nix into your config since it tends to contain a lot of unnecessary stuff. What I usually do is:

  1. Store the current config in a file, i.e. rc2nix > old-config.nix
  2. Make whatever changes I want in Plasma in the graphical settings app
  3. Store the updated config in a new file, i.e. rc2nix > new-config.nix
  4. Get the difference, i.e. diff old-config.nix new-config.nix and add what I want to my actual plasma-manager config.

This of course only works if you're starting from a relatively unmodified installation of KDE, but in that case it's worth the effort imo.

[–] [email protected] 1 points 11 months ago* (last edited 11 months ago) (1 children)

Thank you for help. so now I have flake.nix and home.nix in ~/.config/home-manager. flake.nix looks like

`{ description = "Plasma Manager Example";

inputs = { # Specify the source of Home Manager and Nixpkgs home-manager.url = "github:nix-community/home-manager"; nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable"; home-manager.inputs.nixpkgs.follows = "nixpkgs";

plasma-manager. url = "github:pjones/plasma-manager";
plasma-manager. inputs. nixpkgs. follows = "nixpkgs";
plasma-manager. inputs. home-manager. follows = "home-manager";

};

outputs = { home-manager , plasma-manager , nixpkgs , ... }: let system = "x86_64-linux"; username = "naresh"; in { homeConfigurations.${username} = home-manager.lib.homeManagerConfiguration { pkgs = nixpkgs.legacyPackages.${system}; # extraModules = [ # plasma-manager.homeManagerModules.plasma-manager # ];

    modules = [
      # ./home.nix
      # {
      #   home = {
      #     inherit username;
      #     homeDirectory = "/home/${username}";
      #     # Update the state version as needed.
      #     stateVersion = "23.05";
      #   };


      # },
      plasma-manager.homeManagerModules.plasma-manager

    ];


  };
  devShells.${system}.default =
    let pkgs = import nixpkgs { inherit system; }; in
    pkgs.mkShell {
      buildInputs = [
        home-manager.packages.${system}.home-manager
      ];
    };
};

} `

and home.nix looks like

{ config, pkgs, plasma-manager, ... }:

{
  # Home Manager needs a bit of information about you and the paths it should
  # manage.
  home.username = "naresh";
  home.homeDirectory = "/home/naresh";

  # This value determines the Home Manager release that your configuration is
  # compatible with. This helps avoid breakage when a new Home Manager release
  # introduces backwards incompatible changes.
  #
  # You should not change this value, even if you update Home Manager. If you do
  # want to update the value, then make sure to first check the Home Manager
  # release notes.
  home.stateVersion = "23.05"; # Please read the comment before changing.


  imports = [ plasma-manager.homeManagerModules.plasma-manager ];

  # The home.packages option allows you to install Nix packages into your
  # environment.
  home.packages = with pkgs; [
    alacritty
    screenfetch
    konsole
    rnix-lsp
    # # Adds the 'hello' command to your environment. It prints a friendly
    # # "Hello, world!" when run.
    # pkgs.hello

    # # It is sometimes useful to fine-tune packages, for example, by applying
    # # overrides. You can do that directly here, just don't forget the
    # # parentheses. Maybe you want to install Nerd Fonts with a limited number of
    # # fonts?
    # (pkgs.nerdfonts.override { fonts = [ "FantasqueSansMono" ]; })

    # # You can also create simple shell scripts directly inside your
    # # configuration. For example, this adds a command 'my-hello' to your
    # # environment:
    # (pkgs.writeShellScriptBin "my-hello" ''
    #   echo "Hello, ${config.home.username}!"
    # '')
  ]; #) ++ ([(builtins.getFlake "github:pjones/plasma-manager")]);

  # Home Manager is pretty good at managing dotfiles. The primary way to manage
  # plain files is through 'home.file'.
  home.file = {
    # # Building this configuration will create a copy of 'dotfiles/screenrc' in
    # # the Nix store. Activating the configuration will then make '~/.screenrc' a
    # # symlink to the Nix store copy.
    # ".screenrc".source = dotfiles/screenrc;

    # # You can also set the file content immediately.
    # ".gradle/gradle.properties".text = ''
    #   org.gradle.console=verbose
    #   org.gradle.daemon.idletimeout=3600000
    # '';
  };

  # You can also manage environment variables but you will have to manually
  # source
  #
  #  ~/.nix-profile/etc/profile.d/hm-session-vars.sh
  #
  # or
  #
  #  /etc/profiles/per-user/naresh/etc/profile.d/hm-session-vars.sh
  #
  # if you don't want to manage your shell through Home Manager.
  home.sessionVariables = {
    # EDITOR = "emacs";
  };

  # Let Home Manager install and manage itself.
  programs.home-manager.enable = true;

  programs.plasma = {
    enable = true;

    # Some high-level settings:
    workspace.clickItemTo = "select";

    hotkeys.commands."Launch Konsole" = {
      key = "Meta+Alt+K";
      command = "konsole";
    };

    # Some mid-level settings:
    shortcuts = {
      ksmserver = {
        "Lock Session" = [ "Screensaver" "Meta+Ctrl+Alt+L" ];
      };

      kwin = {
        "Expose" = "Meta+,";
        "Switch Window Down" = "Meta+J";
        "Switch Window Left" = "Meta+H";
        "Switch Window Right" = "Meta+L";
        "Switch Window Up" = "Meta+K";
      };
    };

    # A low-level setting:
    configFile."baloofilerc"."Basic Settings"."Indexing-Enabled" = false;
  };
}



and when I run home-manager switch --flake ~/.config/home-manager/ It gives me

`error: … while evaluating a branch condition

     at /nix/store/1ryprai4bllkrna60cmcygxc4qyn79s1-source/lib/lists.nix:57:9:

       56|       fold' = n:
       57|         if n == len
         |         ^
       58|         then nul

   … while calling the 'length' builtin

     at /nix/store/1ryprai4bllkrna60cmcygxc4qyn79s1-source/lib/lists.nix:55:13:

       54|     let
       55|       len = length list;
         |             ^
       56|       fold' = n:

   (stack trace truncated; use '--show-trace' to show the full trace)

   error: The option `home.stateVersion' is used but not defined.

`

Now don't know what to do. I got your latter advice regarding diff but first I need to make this work. I am on unstable nixos version. and

home-manager --version gives 23.11-pre

nixos-version gives 23.11pre546599.e44462d6021b (Tapir)

___``___

[–] [email protected] 1 points 11 months ago

The problem seems to be that home.stateVersion is not set because you commented out both the declaration in flake.nix as well as the line that imports home.nix. It's a bit difficult to see whether the config is otherwise fine since there is a lot of visual clutter due to all the commented-out lines.