Add treefmt to nix dev shells

DanGould · DanGould · commit 49a88f6d3476 · 2026-02-18T23:00:02.000+08:00
Lets developers run `treefmt` (or `treefmt --ci`) directly
in `nix develop` instead of needing npx for prettier and
other formatters configured in treefmt.nix.
diff --git a/flake.nix b/flake.nix
@@ -209,6 +209,7 @@
                 dart
                 cargo-fuzz
                 bzip2 # needed for some machines to have access to libzip at runtime
+                treefmtEval.config.build.wrapper
               ]
               ++ pkgs.lib.optionals (!pkgs.stdenv.isDarwin) [
                 cargo-llvm-cov

Original file line number	Diff line number	Diff line change
`@@ -209,6 +209,7 @@`
`209`	`209`	`dart`
`210`	`210`	`cargo-fuzz`
`211`	`211`	`bzip2 # needed for some machines to have access to libzip at runtime`
	`212`	`+ treefmtEval.config.build.wrapper`
`212`	`213`	`]`
`213`	`214`	`++ pkgs.lib.optionals (!pkgs.stdenv.isDarwin) [`
`214`	`215`	`cargo-llvm-cov`