Add pandoc-lua-marshal to Nix shell

[evenbrenden]

Add missing dependency to Nix shell. pandoc-lua-marshal is currently broken in Nixpkgs, so building in the Nix shell still fails (assuming Nixpkgs is used as input). Nevertheless, this is one step closer to a working Nix build.

[tarleb]

I don't have any experience with nix, but do you know what we'd need to fix in pandoc-lua-marshal?

[evenbrenden]

I don't have any experience with nix, but do you know what we'd need to fix in pandoc-lua-marshal?

This would typically be fixed in Nixpkgs, the repo that manages the dependencies listed in shell.nix. From what I gather, new and updated packages are automatically pulled from Hackage to Nixpkgs. pandoc-lua-marshal was added in this PR, but the build currently fails because the hslua and tasty-lua packages in Nixpkgs are too old. These will probably be updated on a later pull from Hackage. I can take a closer look.

[tarleb]

I see, thanks. Might be time for me to learn some nix.

[evenbrenden]

NixOS/nixpkgs#160733 fixes pandoc-lua-marshal.