Frusterating error when printing a list to file via home.file

Help
1

I have an error I cant figure out. In my home manager files I have defined:

options = {
    tekslice.home.info.cliApps = lib.mkOption {
      type = lib.types.listOf;
      default = [];
    };
};

Then elsewhere I have:

config = {
    tekslice.home.info.cliApps = [ "yazi" ];
    programs.yazi = {
      enable = lib.mkDefault true;
    };
};

and

config = lib.mkIf config.tekslice.home.shell.fish.enable {
    tekslice.home.info.cliApps = [ "fish" ];
    programs.fish = {
      enable = lib.mkDefault config.tekslice.home.shell.fish.enable;
    };
};

and

home.file = {
      ".config/info/installed_cli_apps.txt".text = ''
        ${config.tekslice.home.info.cliApps};
      '';
 };

However when I try to apply the config I get:

evaluating derivation 'git+file:///home/matthew/Git/nix-files#homeConfigurations."merror:
       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:34:12:
           33|
           34|   strict = derivationStrict drvAttrs;
             |            ^
           35|

       … while evaluating derivation 'home-manager-generation'
         whose name attribute is located at /nix/store/apfqvr9kddcl6fscjvb92p4xdrqzcwk0-source/pkgs/stdenv/generic/make-derivation.nix:375:7

       … while evaluating attribute 'buildCommand' of derivation 'home-manager-generation'
         at /nix/store/apfqvr9kddcl6fscjvb92p4xdrqzcwk0-source/pkgs/build-support/trivial-builders/default.nix:59:17:
           58|         enableParallelBuilding = true;
           59|         inherit buildCommand name;
             |                 ^
           60|         passAsFile = [ "buildCommand" ]

       … while evaluating the option `home.file.".config/info/installed_cli_apps.txt".source':

       … while evaluating definitions from `/nix/store/548acnkylzwsxfjd4l5g7yfmli77199b-source/modules/files.nix':

       … while evaluating the option `home.file.".config/info/installed_cli_apps.txt".text':

       … while evaluating definitions from `/nix/store/5izr1fm6cw1c9j1a2rwp3132ycdcnrh9-source/home-manager/common/cli/default.nix':

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

       error: expected a set but found a function: «lambda listOf @ /nix/store/apfqvr9kddcl6fscjvb92p4xdrqzcwk0-source/lib/types.nix:564:14»

I have tried assigning “config.tekslice.home.info.cliApps” to a variable in a let binding and putting ${the-variable} in the text block but it gives the same error. Everything I find online says this should work, but im stumped.

2

The type definition of your tekslice.home.info.cliApps option is incomplete. You have listOf but didn’t specify what type of values the list should contain. So that should probably be lib.types.listOf lib.types.str.

3

I did overlook that, although now its a new error:

error:
       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:34:12:
           33|
           34|   strict = derivationStrict drvAttrs;
             |            ^
           35|

       … while evaluating derivation 'home-manager-generation'
         whose name attribute is located at /nix/store/apfqvr9kddcl6fscjvb92p4xdrqzcwk0-source/pkgs/stdenv/generic/make-derivation.nix:375:7

       … while evaluating attribute 'buildCommand' of derivation 'home-manager-generation'
         at /nix/store/apfqvr9kddcl6fscjvb92p4xdrqzcwk0-source/pkgs/build-support/trivial-builders/default.nix:59:17:
           58|         enableParallelBuilding = true;
           59|         inherit buildCommand name;
             |                 ^
           60|         passAsFile = [ "buildCommand" ]

       … while evaluating the option `home.file.".config/info/installed-cli-apps.txt".source':

       … while evaluating definitions from `/nix/store/548acnkylzwsxfjd4l5g7yfmli77199b-source/modules/files.nix':

       … while evaluating the option `home.file.".config/info/installed-cli-apps.txt".text':

       … while evaluating definitions from `/nix/store/rc2ljjrsjwrnx07bkg1hi55wrqfpnby6-source/home-manager/common/cli/default.nix':

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

       error: cannot coerce a list to a string: [ «thunk» «thunk» ]

Im curious if its because “config.tekslice.home.info.cliApps” is a list and I need to convert or transform it from being an actual list to just strings…?

4

I fixed the error by changing my code to:

home.file = {
  ".config/info/installed-cli-apps.txt".text = ''
    ${lib.concatStrings (lib.intersperse "\n" config.tekslice.home.info.cliApps)};
  '';
};

Which currently yield a file with the contents of:

yazi
fish;

So now I just need to figure out how to drop the trailing semicolon.

5 
home.file = {
  ".config/info/installed-cli-apps.txt".text = ''
    ${lib.concatStrings (lib.intersperse "\n" config.tekslice.home.info.cliApps)};
''; # you're looking for this ---------------------------------------------------^
6

Lol, yup I just found it and was coming back to post. Ultimately changed that line to:

${lib.concatLines config.tekslice.home.info.cliApps}

Thanks everyone that took the time to offer advice.

Final working block:

    home.file = {
      ".config/info/installed-cli-apps.txt".text = ''
        ${lib.concatLines config.tekslice.home.info.cliApps}
      '';
    };