build(bazel): update to bazel 0.27.0 and fix compat in @angular/bazel package (#31019)

ctx.actions.declare_file now used in @angular/bazel ng_module rule as ctx.new_file is now deprecated. Fixes error:

```
        File "ng_module.bzl", line 272, in _expected_outs
                ctx.new_file(ctx.genfiles_dir, (ctx.label.name ..."))
Use ctx.actions.declare_file instead of ctx.new_file.
Use --incompatible_new_actions_api=false to temporarily disable this check.
```

This can be worked around with incompatible_new_actions_api flag but may as well fix it proper so downstream doesn't require this flag due to this code.

Also, depset() is no longer iterable by default without a flag. This required fixing in a few spots in @angular/bazel.

fix: foo

PR Close #31019

packages/bazel/src/builders/files/WORKSPACE.template

@@ -49,7 +49,7 @@ Try running `yarn bazel` instead.
     (If you did run that, check that you've got a fresh `yarn install`)
 
 """,
-    minimum_bazel_version = "0.26.0",
+    minimum_bazel_version = "0.27.0",
 )
 
 # Setup the Node repositories. We need a NodeJS version that is more recent than v10.15.0

packages/bazel/src/builders/files/__dot__bazelrc.template

@@ -33,3 +33,6 @@ build --define=compile=legacy
 # Turn on managed directories feature in Bazel
 # This allows us to avoid installing a second copy of node_modules
 common --experimental_allow_incremental_repository_updates
+
+# Compatibility flag for Bazel 0.27.0
+common --incompatible_depset_is_not_iterable=false

packages/bazel/src/ng_module.bzl

@@ -269,7 +269,7 @@ def _expected_outs(ctx):
     # TODO(alxhub): i18n is only produced by the legacy compiler currently. This should be re-enabled
     # when ngtsc can extract messages
     if is_legacy_ngc:
-        i18n_messages_files = [ctx.new_file(ctx.genfiles_dir, ctx.label.name + "_ngc_messages.xmb")]
+        i18n_messages_files = [ctx.actions.declare_file(ctx.label.name + "_ngc_messages.xmb")]
     else:
         i18n_messages_files = []
 
@@ -442,7 +442,7 @@ def ngc_compile_action(
 
     if dts_bundles_out != None:
         # combine the inputs and outputs and filter .d.ts and json files
-        filter_inputs = [f for f in list(inputs) + outputs if f.path.endswith(".d.ts") or f.path.endswith(".json")]
+        filter_inputs = [f for f in inputs.to_list() + outputs if f.path.endswith(".d.ts") or f.path.endswith(".json")]
 
         if _should_produce_flat_module_outs(ctx):
             dts_entry_points = ["%s.d.ts" % _flat_module_out_file(ctx)]

packages/bazel/src/ng_package/ng_package.bzl

@@ -94,6 +94,10 @@ WELL_KNOWN_GLOBALS = {p: _global_name(p) for p in [
     "rxjs/operators",
 ]}
 
+# skydoc fails with type(depset()) so using "depset" here instead
+# TODO(gregmagolan): clean this up
+_DEPSET_TYPE = "depset"
+
 def _rollup(ctx, bundle_name, rollup_config, entry_point, inputs, js_output, format = "es", package_name = "", include_tslib = False):
     map_output = ctx.actions.declare_file(js_output.basename + ".map", sibling = js_output)
 
@@ -133,7 +137,7 @@ def _rollup(ctx, bundle_name, rollup_config, entry_point, inputs, js_output, for
 
     args.add("--silent")
 
-    other_inputs = [ctx.executable._rollup, rollup_config]
+    other_inputs = [rollup_config]
     if ctx.file.license_banner:
         other_inputs.append(ctx.file.license_banner)
     if ctx.version_file:
@@ -144,6 +148,7 @@ def _rollup(ctx, bundle_name, rollup_config, entry_point, inputs, js_output, for
         inputs = inputs.to_list() + other_inputs,
         outputs = [js_output, map_output],
         executable = ctx.executable._rollup,
+        tools = [ctx.executable._rollup],
         arguments = [args],
     )
     return struct(
@@ -165,7 +170,8 @@ def _flatten_paths(directory):
 # Optionally can filter out files that do not belong to a specified package path.
 def _filter_out_generated_files(files, extension, package_path = None):
     result = []
-    for file in files:
+    files_list = files.to_list() if type(files) == _DEPSET_TYPE else files
+    for file in files_list:
         # If the "package_path" parameter has been specified, filter out files
         # that do not start with the the specified package path.
         if package_path and not file.short_path.startswith(package_path):
@@ -183,9 +189,10 @@ def _esm2015_root_dir(ctx):
     return ctx.label.name + ".es6"
 
 def _filter_js_inputs(all_inputs):
+    all_inputs_list = all_inputs.to_list() if type(all_inputs) == _DEPSET_TYPE else all_inputs
     return [
         f
-        for f in all_inputs
+        for f in all_inputs_list
         if f.path.endswith(".js") or f.path.endswith(".json")
     ]
 

packages/bazel/src/schematics/ng-add/index.ts

@@ -48,7 +48,7 @@ function addDevDependenciesToPackageJson(options: Schema) {
 
     const devDependencies: {[k: string]: string} = {
       '@angular/bazel': angularCoreVersion,
-      '@bazel/bazel': '^0.26.0',
+      '@bazel/bazel': '^0.27.0',
       '@bazel/ibazel': '^0.10.2',
       '@bazel/karma': '0.31.1',
       '@bazel/typescript': '0.31.1',

packages/bazel/src/schematics/ng-add/index_spec.ts

@@ -113,6 +113,7 @@ describe('ng-add schematic', () => {
     const json = JSON.parse(content);
     const devDeps = Object.keys(json.devDependencies);
     expect(devDeps).toContain('@bazel/bazel');
+    expect(devDeps).toContain('@bazel/hide-bazel-files');
     expect(devDeps).toContain('@bazel/ibazel');
     expect(devDeps).toContain('@bazel/karma');
   });