Problems installing rescript-vscode pakcage

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1

Hi!

Trying to install the vscode-extensions.chenglou92.rescript-vscode package.

I have a vscode.nix that looks like this that configuration.nix imports:

{ pkgs, ... }:

let
  extensions = (with pkgs.vscode-extensions; [
    haskell.haskell
    arrterian.nix-env-selector
    jnoortheen.nix-ide
    chenglou92.rescript-vscode
  ]) ++ pkgs.vscode-utils.extensionsFromVscodeMarketplace [{
    name = "groovylambda";
    publisher = "sheaf";
    version = "0.1.0";
    sha256 = "1j2w6y90qwzaima1gg6vb9fij400hxfbxlla1a55hqjls6157zbf";
  }
  ];
  vscode-with-extensions = pkgs.vscode-with-extensions.override {
    vscodeExtensions = extensions;
  };
in
{
  config = {
    environment.systemPackages = [
      vscode-with-extensions
    ];
  };
}

When I added the line chenglou92.rescript-vscode and rebuilt, it failed with this message:

building the system configuration...
error: undefined variable 'chenglou92'

       at /nix/store/lwza4577zj3h844fwif9zdzlk0blvbvz-source/vscode.nix:8:5:

            7|     jnoortheen.nix-ide
            8|     chenglou92.rescript-vscode
             |     ^
            9|   ]) ++ pkgs.vscode-utils.extensionsFromVscodeMarketplace [{
(use '--show-trace' to show detailed location information)
error: getting status of '/tmp/nixos-rebuild.YJOGd1/result': No such file or directory

Without it, it is working fine.

My nix-channel is set to 21.11:

❯ nix-channel --list
nixos https://nixos.org/channels/nixos-21.11

I’m puzzled since the package seems to be listed in the package registry, are there any reasons it would not find the package?

2

Have you switched channels recently?

Did you not update them for a while?

Did you run the nix-channel command as user or as root?

3

Couple of weeks ago I guess.

I would guess I probably ran nix-channel as a user. Do I need to do it as root?

Could also probably mention that I’m using a flake, so I’m updating with sudo nixos-rebuild switch --flake ~/.config/nixpkgs in case that makes any difference.

4

Ah, Interesting. Seems like my root nix-channel was quite old. Is this one the one connected to the packages installed through configuration.nix?

❯ sudo nix-channel --list
nixos https://nixos.org/channels/nixos-20.09
5

I updated through root by the old nix-channel so it looks like this:

❯ sudo nix-channel --list
nixos https://nixos.org/channels/nixos-21.11

And ran

sudo nix-channel --update

and then

sudo nixos-rebuild switch --flake ~/.config/nixpkgs

Also tried this and rebooted:

sudo nixos-rebuild --upgrade boot --flake ~/.config/nixpkgs

But still, it seems to not find that package :thinking: Did I miss a step?

6

Flakes do not care for your channels, what are the inputs on the flake and how do you generate the system configuration?

1 Like
7

Ah! Thanks so much for pointing me in that direction!

Set the input in flake.nix like this and rebuilt, and now it works :tada:

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixos-21.11";
  };

This had been an underlying issue for several problems I had as I believed I was already upgraded