Replace yamlfmt with pretty_yaml (#578)

* Replace yamlfmt with pretty_yaml

kachick/anylang-template@23ddc89
kachick/vscode-extension-yamlfmt@a597e68

* Revert dropped empty steep_expectations.yml again

.github/workflows/lint.yml

@@ -40,18 +40,3 @@ jobs:
             .
             .github
             .vscode
-
-  yamlfmt:
-    timeout-minutes: 15
-    runs-on: ubuntu-24.04
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install mise
-        run: |
-          curl https://mise.jdx.dev/install.sh | sh
-          echo "$HOME/.local/share/mise/bin" >> $GITHUB_PATH
-          echo "$HOME/.local/share/mise/shims" >> $GITHUB_PATH
-      - name: Install yamlfmt
-        # TODO: Apply selfup after https://github.com/google/yamlfmt/pull/180
-        run: mise use -g yamlfmt@0.12.1
-      - run: yamlfmt -lint .

.vscode/extensions.json

@@ -6,7 +6,6 @@
     "soutaro.steep-vscode",
     "soutaro.rbs-syntax",
     "dprint.dprint",
-    "kachick.vscode-yamlfmt",
     "rubocop.vscode-rubocop",
     "jnoortheen.nix-ide"
   ]

.vscode/settings.json

@@ -4,12 +4,6 @@
   "[ruby]": {
     "editor.defaultFormatter": "rubocop.vscode-rubocop"
   },
-  "[yaml]": {
-    "editor.defaultFormatter": "kachick.vscode-yamlfmt"
-  },
-  "[github-actions-workflow]": {
-    "editor.defaultFormatter": "kachick.vscode-yamlfmt"
-  },
   "[nix]": {
     "editor.defaultFormatter": "jnoortheen.nix-ide"
   },

Rakefile

@@ -134,14 +134,12 @@ task :deps do
   sh('dprint --version')
   sh('tree --version')
   sh('typos --version')
-  sh('yamlfmt -version')
 end
 
 desc 'Tests except ruby'
 task :check_non_ruby do
   Rake::Task['dprint'].invoke
   sh('typos . .github .vscode')
-  sh('yamlfmt -lint .')
   # nix fmt doesn't have check: https://github.com/NixOS/nix/issues/6918
   sh("git ls-files '*.nix' | xargs nixfmt --check")
 end

dprint.json

@@ -3,6 +3,10 @@
   },
   "markdown": {
   },
+  "yaml": {
+    "quotes": "preferSingle",
+    "trimTrailingWhitespaces": false
+  },
   "excludes": [
     ".git",
     "**/*lock.json",
@@ -13,6 +17,7 @@
   ],
   "plugins": [
     "https://plugins.dprint.dev/json-0.19.1.wasm",
-    "https://plugins.dprint.dev/markdown-0.16.3.wasm"
+    "https://plugins.dprint.dev/markdown-0.16.3.wasm",
+    "https://plugins.dprint.dev/g-plane/pretty_yaml-v0.3.0.wasm"
   ]
 }

flake.nix

@@ -40,7 +40,6 @@
               nil
               nixfmt-rfc-style
               typos
-              yamlfmt
             ];
           };
 

steep_expectations.yml

@@ -1 +1,2 @@
---- []
+---
+[]