Error when trying to run Sample Miso-JSaddle application

[panmona]

Describe the bug
I'm just getting started with miso.
And I tried running the sample jsaddle application which results into the following error for me:

error:
       … while calling the 'derivationStrict' builtin
         at <nix/derivation-internal.nix>:37:12:
           36|
           37|   strict = derivationStrict drvAttrs;
             |            ^
           38|

       … while evaluating derivation 'ghc-shell-for-app-0.1.0.0'
         whose name attribute is located at /nix/store/9r1vhvri4ba913g4vyg5jqrhg6pb9amn-source/pkgs/development/haskell-modules/make-package-set.nix:308:9

       … while evaluating attribute 'NIX_GHC' of derivation 'ghc-shell-for-app-0.1.0.0'
         at /nix/store/9r1vhvri4ba913g4vyg5jqrhg6pb9amn-source/pkgs/development/haskell-modules/make-package-set.nix:316:9:
          315|         LOCALE_ARCHIVE = pkgs.lib.optionalString (stdenv.hostPlatform.libc == "glibc") "${buildPackages.glibcLocales}/lib/locale/locale-archive";
          316|         "NIX_${ghcCommandCaps}" = "${ghcEnv}/bin/${ghcCommand}";
             |         ^
          317|         "NIX_${ghcCommandCaps}PKG" = "${ghcEnv}/bin/${ghcCommand}-pkg";

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

       error: undefined variable 'miso'
       at /home/m/Dev/study/Sem8/BA/miso/sample-app-jsaddle/default.nix:5:72:
            4| {
            5|   dev = pkgs.haskell.packages.ghc865.callCabal2nix "app" ./. { inherit miso; };
             |                                                                        ^
            6|   release = pkgs.haskell.packages.ghcjs86.callCabal2nix "app" ./. {};

The normal sample-app worked for me: https://github.com/dmjio/miso/tree/master?tab=readme-ov-file#begin, but I'd like to try out the live-reloading feature as otherwise the development experience is a lot less nice.
Do you know what could be the error here? I'm completely new to miso and nix, so I don't quite know where to begin in solving this error with the sample app. Even just pointers into the right direction would be appreciated! Thank you!

To Reproduce
This is what I did, though it might not be easily reproducible with these steps:

1. Started with no nix installed
2. install nix with the install link from here: https://nix.dev/install-nix.html.
3. Build the normal sample-app with nix (including the cachix steps) https://github.com/dmjio/miso/tree/master?tab=readme-ov-file#begin
4. Try to build the jsaddle sample app using nix-shell --run reload

Expected behavior
The build runs successfully

Screenshots

Desktop (please complete the following information):

• OS: Linux
• Browser: n.a.
• Version: n.a.

Additional context

[dmjio]

#776

[panmona]

Thank you for taking such a quick look at this issue!
I pulled all new changes and tried it again. The error I reported is gone. Thanks :)

I now unfortunately have a new error though: Parse of field 'packages' failed:

Loading /nix/store/mn8w5874m8xh8ssk141knyc3g57byk3y-cabal-install-2.4.1.0/bin/cabal new-repl ...
Warning: /home/m/.cabal/config: Unrecognized stanza on line 146
/home/m/.cabal/config: Unrecognized field installdir on line 120
Warning: /home/m/.cabal/config: Unrecognized stanza on line 146
/home/m/.cabal/config: Unrecognized field installdir on line 120
cabal: Error parsing project file
/home/m/Dev/study/Sem8/BA/miso/cabal.project:1:
Parse of field 'packages' failed.

Command "/nix/store/mn8w5874m8xh8ssk141knyc3g57byk3y-cabal-install-2.4.1.0/bin/cabal new-repl" exited unexpectedly

I did not do any changes to my cabal config file in my home directory. Just to make sure I deleted it and re-created it with cabal user-config update. I received the same output afterwards.

Do you have an idea on how this error can be resolved?