Create vscodium-with-extensions

[turion]

Since #59028 there is the package vscodium. It accepts basically the same extensions as vscode, as far as I understand. It would be cool if there was vscodium-with-extensions that works the same as vscode-with-extensions. Ideally, a lot of code would be shared between these two functions, but I'm not sure how to do that. If you can provide some advice, I'm willing to try implementing it.

@eadwu @volth @matthewbauer @angristan

[eadwu]

From what I remember, vscode-with-extensions is just a wrapper script to set the extension directory to the derivation that contains the extensions so this shouldn't be that hard.

[raboof]

Yes, in fact you can already plug vscodium into vscode-with-extensions - I created https://nixos.wiki/wiki/VSCodium to document this. I guess we could create a pkgs.vscodium-with-extensions that already has that set as the default.

[turion]

I want to try this at some point soon

[panda2134]

As nix refuses to install vscode-with-extensions by default due to licensing issues, creating vscodium-with-extensions actually makes sense (due to its MIT license).

[tv42]

I'm using a pretty strict allowUnfreePredicate that does not include vscode, and vscode-with-extensions.override { vscode = vscodium; } works just fine for me, without complaints about non-free.