Run swiftformat via mint run

.gitignore

@@ -58,6 +58,8 @@ ZipBuilder/Packages
 ZipBuilder/*.xcodeproj
 ZipBuilder/Package.resolved
 
+# Mint package manager
+Mint
 
 # IntelliJ
 .idea

README.md

@@ -137,16 +137,15 @@ See [HeadersImports.md](HeadersImports.md).
 ### Code Formatting
 
 To ensure that the code is formatted consistently, run the script
-[./scripts/style.sh](https://github.com/firebase/firebase-ios-sdk/blob/master/scripts/style.sh)
+[./scripts/check.sh](https://github.com/firebase/firebase-ios-sdk/blob/master/scripts/check.sh)
 before creating a PR.
 
-Travis will verify that any code changes are done in a style compliant way. Install
-`clang-format` and `swiftformat`:
+GitHub Actions will verify that any code changes are done in a style compliant
+way. Install `clang-format` and `mint`:
 
 ```
 brew install clang-format
 brew install mint
-mint install [email protected]
 ```
 
 ### Running Unit Tests

scripts/setup_check.sh

@@ -33,12 +33,9 @@ if ! git rev-parse origin/master >& /dev/null; then
   git fetch origin
 fi
 
-# Setup mint which installs a versioned swiftformat.
-set -x
-brew install mint
-mint bootstrap --link
-
+# mint installs tools from Mintfile on demand.
 brew install clang-format
+brew install mint
 
-clang-format -version
-swiftformat -version
+# Explicitly mint bootstrap to show its version in the "Setup check" GHA phase
+mint bootstrap

scripts/style.sh

@@ -1,10 +1,13 @@
 #!/bin/bash
 
-# Copyright 2017 Google
+# Copyright 2017 Google LLC
+#
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
+#
 #      http://www.apache.org/licenses/LICENSE-2.0
+#
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@@ -55,22 +58,12 @@ case "$version" in
     ;;
 esac
 
+# Ensure that tools in `Mintfile` are installed locally to avoid permissions
+# problems that would otherwise arise from the default of installing in
+# /usr/local.
+export MINT_PATH=Mint
+
 system=$(uname -s)
-if [[ "$system" == "Darwin" ]]; then
-  version=$(swiftformat --version)
-  # Log the version in non-interactive use as it can be useful in travis logs.
-  if [[ ! -t 1 ]]; then
-    echo "Found: $version"
-  fi
-  version="${version/*version /}"
-  # Ensure the swiftformat version is 0.45.5 (as of 2020-08-09)
-  # Update Mintfile and run command below to update.
-  if [[ "$version" != 0.45.5 ]]; then
-    echo "Version $version installed. Please install swiftformat 0.45.5"
-    echo "brew install mint; mint install nicklockwood/[email protected]"
-    exit 1
-  fi
-fi
 
 # Joins the given arguments with the separator given as the first argument.
 function join() {
@@ -162,6 +155,9 @@ s%^./%%
 # Sources pulled in by travis bundler, with and without a leading slash
 \%^/?vendor/bundle/% d
 
+# Sources pulled in by the Mint package manager
+\%^Mint% d
+
 # Auth Sample is not subject to formatting
 \%^(FirebaseAuth/Tests/Sample)/% d
 
@@ -185,7 +181,7 @@ for f in $files; do
       # Match output that says:
       # 1/1 files would have been formatted.  (with --dryrun)
       # 1/1 files formatted.                  (without --dryrun)
-      swiftformat "${swift_options[@]}" "$f" 2>&1 | grep '^1/1 files' > /dev/null
+      mint run swiftformat "${swift_options[@]}" "$f" 2>&1 | grep '^1/1 files' > /dev/null
     else
       false
     fi