Remove prettier-plugin-toml dependency to fix minimal template

[Copilot]

The minimal template was failing during git commit with a module not found error for prettier-plugin-toml. The error occurred because the hardcoded path to the plugin was incorrect:

[error] Cannot find module '/nix/store/lfjxr7afcn146kfb4lkm79z0c1jndamp-prettier-plugin-toml-1.0.0/lib/node_modules/prettier-plugin-toml/lib/index.js' imported from /home/samtitle/PersonalRepos/test-std-project/noop.js

This was caused by the hardcoded path ${nixpkgs.nodePackages.prettier-plugin-toml}/lib/node_modules/prettier-plugin-toml/lib/index.js in the treefmt configuration, which no longer exists due to changes in the package structure.

Following the maintainer's suggestion to drop TOML support from prettier, this PR removes the prettier-plugin-toml dependency entirely:

• Removed nixpkgs.nodePackages.prettier-plugin-toml from packages in both treefmt.nix and mdbook.nix
• Removed the --plugin option and hardcoded path from prettier configuration
• Removed *.toml from prettier's file includes list

The change preserves all other formatting functionality (nix, shell, CSS, HTML, JS, JSON, JSX, MD, MDX, SCSS, TS, YAML) while eliminating the problematic TOML formatting via prettier. TOML files will simply not be formatted automatically, but the minimal template will work without errors.

Fixes #407.

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[Copilot]

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[blaggacao]

@sstitle this looks like a correct quick fix, removing toml support. Pleas lt me know what you think of it or if you have any opinion towards alternative paths of actions (like looking for an alternative tonl formatter - suggestions?).

[blaggacao]

@copilot can you also remove the support for toml in treefmt, should it still exist?

[Copilot]

@copilot can you also remove the support for toml in treefmt, should it still exist?

I've already removed all TOML support from treefmt in commit 6714ba8. The changes include:

• Removed nixpkgs.nodePackages.prettier-plugin-toml from packages
• Removed the --plugin option with hardcoded path from prettier configuration
• Removed *.toml from prettier's includes list

There's no additional TOML formatting support remaining in treefmt that needs to be removed.

[sstitle]

@sstitle this looks like a correct quick fix, removing toml support. Pleas lt me know what you think of it or if you have any opinion towards alternative paths of actions (like looking for an alternative tonl formatter - suggestions?).

I'm not sure I know enough about the context of what TOML is used for in mdbook. I certainly don't think I need it. Anything that makes the minimal template functional is a suitable fix in my opinion. Thanks for your help!

[blaggacao]

We got a small rabbit hole between this PR and the merge button: CI is red. :-)

Let'see if Copilot can drive this.

[DrTeagle]

perhaps failing b/c of nix version?