From 60a21d256a08bcdd84b54daf2b76fcf0580f0375 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Wed, 6 May 2026 02:11:15 +0900
Subject: [PATCH] Add sig/manifest.yaml to declare stdlib dependencies

`sig/herb/token_list.rbs` declares a class inheriting from
`SimpleDelegator`, which comes from the `delegate` standard library.
Since `delegate` is a default gem, it does not appear in the gemspec,
and `rbs collection install` cannot resolve it on the consumer side.

With Steep 2.0, this previously-silent issue surfaces as a hard error:

    Type checking failed due to error in library RBS file
    Cannot find type `SimpleDelegator`
    (.../herb-0.10.1/sig/herb/token_list.rbs:4:2)
    Diagnostic ID: Ruby::LibraryRBSError

Declare the implicit standard library dependencies in
`sig/manifest.yaml` so downstream users get correct type resolution.

Refs: https://github.com/ruby/rbs/blob/master/docs/gem.md
---
 herb.gemspec      |  1 +
 sig/manifest.yaml | 13 +++++++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 sig/manifest.yaml

diff --git a/herb.gemspec b/herb.gemspec
index 2df46d36d..903e7312a 100644
--- a/herb.gemspec
+++ b/herb.gemspec
@@ -31,6 +31,7 @@ Gem::Specification.new do |spec|
     "lib/**/*.rb",
     "lib/**/*.yml",
     "sig/**/*.rbs",
+    "sig/manifest.yaml",
     "src/**/*.{c,h}",
     "ext/**/*.{c,h}",
     "templates/**/*.{rb,erb}",
diff --git a/sig/manifest.yaml b/sig/manifest.yaml
new file mode 100644
index 000000000..cfbdbb7bf
--- /dev/null
+++ b/sig/manifest.yaml
@@ -0,0 +1,13 @@
+dependencies:
+  - name: delegate
+  - name: did_you_mean
+  - name: fileutils
+  - name: json
+  - name: optparse
+  - name: pathname
+  - name: socket
+  - name: stringio
+  - name: tempfile
+  - name: time
+  - name: timeout
+  - name: yaml