Using an external oh-my-zsh theme with zsh in nix?

epigramengineer · March 7, 2020, 7:42am

I’m trying to set up powerlevel10k which has a nixpkg with oh-my-zsh, but it doesn’t seem to let me configure it via the normal ZSH_THEME.

nix-env -i zsh oh-my-zsh powerlevel10k

I can’t set my ZSH_THEME in .zshrc to be powerlevel10k, since it’s not installed to the oh-my-zsh themes directory:

-- .nix-profile/
  -- share/
    -- oh-my-zsh/themes/
    -- zsh-powerlevel10k/

Does anybody know how I can set the ZSH_THEME in my .zshrc to look at powerlevel10k? This is for a machine running just nix, not nixos.

NobbZ · March 7, 2020, 9:38am

Are you using home-manager?

There I have something like this:

programs.zsh.plugins = [
  {
    name = "powerlevel10k";
    src = pkgs.zsh-powerlevel10k;
    file = "share/zsh-powerlevel10k/powerlevel10k.zsh-theme";
  }
  {
    name = "powerlevel10k-config";
    src = lib.cleanSource ./p10k-config;
    file = "p10k.zsh";
  }
];

Whereas the config is just the single .p10k.zsh which was generated with the wizard once. I’m planning to fiddle with it later, but there are more important things to do

If you don’t use home-manager, but the theme is linked from your profile (as it looks like from your screenshot), just add that to your fpath.

fpath+=(${HOME}/.nix-profile/share/zsh-powerlevel10k)

epigramengineer · March 7, 2020, 11:02pm

Thanks for the advice!

I’m not using home manager, so I’ve added the theme to my fpath, but for setting the ZSH_THEME variable it looks like it is looking under the $ZSH/themes/$ZSH_THEME

This means even if I set the theme to be an absolute path or to the powerlevel10k theme, it just gives me an error saying no such file or directory: /home/<username>/.nix-profile/share/oh-my-zsh/themes/powerlevel10k

NobbZ · March 8, 2020, 8:12am

Hm, seems as if I missremembered things regarding ZSH, themes and the fpath…

Then I do see 2 possibilities left.

Softlink to the themes location in your profile
Don’t use ZSH_THEME but source the file directly.

(PS: home-manager does basically a mix of both. The p10k files are linked from within my .config/zsh folder into the nix-store for discoverability, though still sourced from the zshrc.

epigramengineer · March 8, 2020, 6:27pm

Oh awesome - I didn’t realize I could just source the file directly instead of the ZSH_THEME variable.

Thanks so much

famadorian · November 27, 2022, 9:55pm

Not sure I understand this;) “./p10k-config” is a directory? in the home directory and “p10k.zsh” is a file inside that directory?

NobbZ · November 27, 2022, 10:30pm

Yes. It contains a single file, .p10k.zsh, as described in the cited post.

No, right besides the HM module that references it.

famadorian · November 27, 2022, 11:18pm

I’m sorry. I don’t get it;) I don’t get where this directory is located.

NobbZ · November 27, 2022, 11:30pm

side by side to the file, in which I have written ./p10k-config, thats how a path expression in nix works.

To be more specific:

The cited code:

github.com

NobbZ/nixos-config/blob/d6698f3ded4cfca815bd3d19c0e722a2e60f19bb/home/modules/profiles/base/default.nix#L196-L200


      
          {
            name = "powerlevel10k-config";
            src = lib.cleanSource ./p10k-config;
            file = "p10k.zsh";
          }

The folder:
https://github.com/NobbZ/nixos-config/tree/main/home/modules/profiles/base/p10k-config

famadorian · November 28, 2022, 9:10am

I’m talking about my own p10k.zsh, which I have generated and I have in my home directory.

I have trouble understanding which directory to move this to and how to reference it there.

If I move it to ~/.config/powerlevel, can I do?:

src = lib.cleanSource ./config/powerlevel;
file = "p10k.zsh";

NobbZ · November 28, 2022, 9:12am

The path is relative to the file you mention it in.

Please read more about path-literals in the manual.

https://nixos.org/manual/nix/stable/language/values.html#type-path

famadorian · November 28, 2022, 9:58am

Right, I had to give an absolute path to include my own config. Thanks

    {
      name = "powerlevel10k-config";
      src = lib.cleanSource "/home/b0ef/ds/platform/conf";
      file = "zsh-p10k.zsh";
    }

NobbZ · November 28, 2022, 10:37am

That is not a path literal, thats a string, that can be coerced into an absolute path under some circumstances.

Either way, absolute pathes are bad for reproducibility. You should make sure that the p10k config actually becomes part of your configuration, and lies at a place thats easily discoverable/referable from the nix file. Preferably a sibling.

famadorian · November 28, 2022, 10:53am

Right, that’s very bad for reproducibility, but the only way to make it reproducible is to include the contents of zsh-p10k.zsh into the home.nix file, but that’s not pretty, either. Another way is to push it to a repo of my own on github?

NobbZ · November 28, 2022, 10:59am

It does not need to be part of, just “beneath” or “besides” it, as I have.

There is no need for a repository (though it is recommended).

I assume you are using HM standalone, channels, and have everything in a single home.nix without extracting anything into modules or other files.

So you have your ~/.config/nixpkgs/home.nix which then contains the plugin like this:

    {
      name = "powerlevel10k-config";
      src = ./conf;
      file = "zsh-p10k.zsh";
    }

And then you have also ~/.config/nixpkgs/conf/zsh-p10k.zsh

The lib.cleanSource is actually not necessary and a left over from a time before I used flakes.

famadorian · November 28, 2022, 11:16am

Right, thanks;)

As a side question, wouldn’t better reproducibility require URN, as in magnet links, instead of stuff on github?

zvictor · August 8, 2024, 8:05am

This is how I made it work for Spaceship:

{ lib, config, pkgs, ... }: {
  home.packages = with pkgs; [
    zsh
    spaceship-prompt
  ];

  programs.zsh = {
    enable = true;
    initExtra = ''
      source ${pkgs.spaceship-prompt}/share/zsh/themes/spaceship.zsh-theme;
    '';
   }

3timeslazy · October 22, 2024, 3:12pm

Hi there,

This is how I manage to use my own custom zsh theme (and some plugins not presented in nixpkgs)

{ pkgs }:
let
  threetimeslazy-theme = builtins.toFile "threetimeslazy.zsh-theme" ''
    local user='%{$fg[magenta]%}%n@%{$fg[magenta]%}%m%{$reset_color%}'
    local pwd='%{$fg[blue]%}$(shrink_path -f)>%{$reset_color%}'
    local return_code='%(?..%{$fg[red]%}%? ↵%{$reset_color%})'
    local git_branch='$(git_prompt_status)%{$reset_color%}$(git_prompt_info)%{$reset_color%}'

    ZSH_THEME_RVM_PROMPT_OPTIONS="i v g"
    ZSH_THEME_GIT_PROMPT_PREFIX="%{$fg[green]%}"
    ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
    ZSH_THEME_GIT_PROMPT_DIRTY=""
    ZSH_THEME_GIT_PROMPT_CLEAN=""

    PROMPT="''${user} ''${pwd}
    $ "
    RPROMPT="''${return_code} ''${git_branch}"
  '';

  fast-syntax-highlighting = pkgs.fetchFromGitHub {
    owner = "zdharma-continuum";
    repo = "fast-syntax-highlighting";
    rev = "v1.55";
    sha256 = "sha256-DWVFBoICroKaKgByLmDEo4O+xo6eA8YO792g8t8R7kA=";
  };

  fzf-tab = pkgs.fetchFromGitHub {
    owner = "Aloxaf";
    repo = "fzf-tab";
    rev = "v1.1.2";
    sha256 = "sha256-Qv8zAiMtrr67CbLRrFjGaPzFZcOiMVEFLg1Z+N6VMhg=";
  };

  zsh-customs = pkgs.stdenv.mkDerivation {
    name = "zsh-customs";

    phases = [ "buildPhase" ];
    buildPhase = ''
      mkdir -p $out/themes
      cp ${threetimeslazy-theme} $out/themes/threetimeslazy.zsh-theme

      mkdir -p $out/plugins
      cp -r ${fast-syntax-highlighting} $out/plugins/fast-syntax-highlighting
      cp -r ${fzf-tab} $out/plugins/fzf-tab
    '';
  };
in
{
  enable = true;
  dotDir = ".config/zsh";
  autocd = true;
  autosuggestion.enable = true;
  autosuggestion.strategy = ["completion" "history"];

  oh-my-zsh = {
    enable = true;
    plugins = [
      "git"
      "fzf"
      "fzf-tab"
      "zoxide"
      "fast-syntax-highlighting"
      "shrink-path"
      "kubectl"
      "docker"
      "colored-man-pages"
    ];
    theme = "threetimeslazy";
    custom = "${zsh-customs}";
  };
}