Nix: remove flake-utils + add overlay

[toastal]

You knew this day was coming 😛

As mentioned elsewhere, there isn’t much point in having a dependency just for a for loop. This will remove the dependency but also expose i686-linux which is supported by tree-sitter but is not in flake-utils’s defaultSystems (which no one seems to check what the defaults are).

Additionally, Nix was missing from the EditorConfig & might as well expose the tree-sitter-nickel as an overlay that automatically appends it into tree-sitter-grammars for convenience (such as for upstream Topiary). All of this & is still a net-negative lines of code diff.

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Footnotes

1. Please consider giving up MS GitHub or offering a non-proprietary, non-US-corporate-controlled mirror for this free software project. I wish to delete this Microsoft account in the future, but I need more projects like this to support alternative methods to send patches & contribute. ↩

[yannham]

I did know 😛 I think exposing an overlay is nice and makes for an additional argument to not use flake-utils, since they don't fit the system nomenclature. LGTM, thanks!

[yannham]

Checked manually that nix flake check, nix build and nix develop works properly, as our workflow doesn't seem to fire on forks (although it should...)