Deprecate bundle cache --all flag

bundler/lib/bundler/cli.rb

@@ -461,6 +461,12 @@ def outdated(*gems)
       bundle without having to download any additional gems.
     D
     def cache
+      SharedHelpers.major_deprecation 2,
+        "The `--all` flag is deprecated because it relies on being " \
+        "remembered across bundler invocations, which bundler will no longer " \
+        "do in future versions. Instead please use `bundle config set cache_all true`, " \
+        "and stop using this flag" if ARGV.include?("--all")
+
       require_relative "cli/cache"
       Cache.new(options).run
     end
@@ -838,7 +844,7 @@ def flag_deprecation(name, flag_name, option)
       value = options[name]
       value = value.join(" ").to_s if option.type == :array
 
-      Bundler::SharedHelpers.major_deprecation 2,\
+      Bundler::SharedHelpers.major_deprecation 2,
         "The `#{flag_name}` flag is deprecated because it relies on being " \
         "remembered across bundler invocations, which bundler will no longer " \
         "do in future versions. Instead please use `bundle config set --local #{name.tr("-", "_")} " \

bundler/lib/bundler/cli/cache.rb

@@ -37,12 +37,6 @@ def setup_cache_all
       all = options.fetch(:all, Bundler.feature_flag.cache_all? || nil)
 
       Bundler.settings.set_command_option_if_given :cache_all, all
-
-      if Bundler.definition.has_local_dependencies? && !Bundler.feature_flag.cache_all?
-        Bundler.ui.warn "Your Gemfile contains path and git dependencies. If you want "    \
-          "to cache them as well, please pass the --all flag. This will be the default " \
-          "on Bundler 3.0."
-      end
     end
   end
 end

bundler/lib/bundler/definition.rb

@@ -319,10 +319,6 @@ def has_rubygems_remotes?
       sources.rubygems_sources.any? {|s| s.remotes.any? }
     end
 
-    def has_local_dependencies?
-      !sources.path_sources.empty? || !sources.git_sources.empty?
-    end
-
     def spec_git_paths
       sources.git_sources.map {|s| File.realpath(s.path) if File.exist?(s.path) }.compact
     end

bundler/spec/cache/git_spec.rb

@@ -174,32 +174,6 @@
     expect(the_bundle).to include_gems "has_submodule 1.0"
   end
 
-  it "displays warning message when detecting git repo in Gemfile", :bundler => "< 3" do
-    build_git "foo"
-
-    install_gemfile <<-G
-      gem "foo", :git => '#{lib_path("foo-1.0")}'
-    G
-
-    bundle :cache
-
-    expect(err).to include("Your Gemfile contains path and git dependencies.")
-  end
-
-  it "does not display warning message if cache_all is set in bundle config" do
-    build_git "foo"
-
-    install_gemfile <<-G
-      gem "foo", :git => '#{lib_path("foo-1.0")}'
-    G
-
-    bundle "config set cache_all true"
-    bundle :cache
-    bundle :cache
-
-    expect(err).not_to include("Your Gemfile contains path and git dependencies.")
-  end
-
   it "caches pre-evaluated gemspecs" do
     git = build_git "foo"
 

bundler/spec/cache/path_spec.rb

@@ -91,18 +91,30 @@
     expect(bundled_app("vendor/cache/foo-1.0")).not_to exist
   end
 
-  it "raises a warning without --all", :bundler => "< 3" do
+  it "does not cache path gems by default", :bundler => "< 3" do
     build_lib "foo"
 
     install_gemfile <<-G
       gem "foo", :path => '#{lib_path("foo-1.0")}'
     G
 
     bundle :cache
-    expect(err).to match(/please pass the \-\-all flag/)
+    expect(err).to be_empty
     expect(bundled_app("vendor/cache/foo-1.0")).not_to exist
   end
 
+  it "caches path gems by default", :bundler => "3" do
+    build_lib "foo"
+
+    install_gemfile <<-G
+      gem "foo", :path => '#{lib_path("foo-1.0")}'
+    G
+
+    bundle :cache
+    expect(err).to be_empty
+    expect(bundled_app("vendor/cache/foo-1.0")).to exist
+  end
+
   it "stores the given flag" do
     build_lib "foo"
 

bundler/spec/other/major_deprecation_spec.rb

@@ -143,6 +143,28 @@
     pending "should fail with a helpful error", :bundler => "3"
   end
 
+  context "bundle cache --all" do
+    before do
+      install_gemfile <<-G
+        source "#{file_uri_for(gem_repo1)}"
+        gem "rack"
+      G
+
+      bundle "cache --all", :raise_on_error => false
+    end
+
+    it "should print a deprecation warning", :bundler => "2" do
+      expect(deprecations).to include(
+        "The `--all` flag is deprecated because it relies on being " \
+        "remembered across bundler invocations, which bundler will no " \
+        "longer do in future versions. Instead please use `bundle config set " \
+        "cache_all true`, and stop using this flag"
+      )
+    end
+
+    pending "should fail with a helpful error", :bundler => "3"
+  end
+
   describe "bundle config" do
     describe "old list interface" do
       before do