From 22dda8684dcb14e31e151ab5516903b51bbe85d7 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Sat, 28 Feb 2026 06:54:28 +0000
Subject: [PATCH] Move GroupIsInstalled to separate GroupQuerier optional
 interface

Co-authored-by: taigrr <8261498+taigrr@users.noreply.github.com>
---
 dnf/capabilities.go    | 1 +
 dnf/parse_test.go      | 1 +
 pacman/capabilities.go | 1 +
 snack.go               | 5 +++++
 4 files changed, 8 insertions(+)

diff --git a/dnf/capabilities.go b/dnf/capabilities.go
index 1279004..1b8dc38 100644
--- a/dnf/capabilities.go
+++ b/dnf/capabilities.go
@@ -15,6 +15,7 @@ var (
 	_ snack.RepoManager    = (*DNF)(nil)
 	_ snack.KeyManager     = (*DNF)(nil)
 	_ snack.Grouper        = (*DNF)(nil)
+	_ snack.GroupQuerier   = (*DNF)(nil)
 	_ snack.NameNormalizer = (*DNF)(nil)
 )
 
diff --git a/dnf/parse_test.go b/dnf/parse_test.go
index 8e9dfa6..4cc9f76 100644
--- a/dnf/parse_test.go
+++ b/dnf/parse_test.go
@@ -468,5 +468,6 @@ var (
 	_ snack.RepoManager    = (*DNF)(nil)
 	_ snack.KeyManager     = (*DNF)(nil)
 	_ snack.Grouper        = (*DNF)(nil)
+	_ snack.GroupQuerier   = (*DNF)(nil)
 	_ snack.NameNormalizer = (*DNF)(nil)
 )
diff --git a/pacman/capabilities.go b/pacman/capabilities.go
index 213c0bd..d5400ad 100644
--- a/pacman/capabilities.go
+++ b/pacman/capabilities.go
@@ -12,6 +12,7 @@ var (
 	_ snack.Cleaner        = (*Pacman)(nil)
 	_ snack.FileOwner      = (*Pacman)(nil)
 	_ snack.Grouper        = (*Pacman)(nil)
+	_ snack.GroupQuerier   = (*Pacman)(nil)
 )
 
 // NOTE: snack.Holder is not implemented for pacman. While pacman supports
diff --git a/snack.go b/snack.go
index 10ba124..fea9ec2 100644
--- a/snack.go
+++ b/snack.go
@@ -186,7 +186,12 @@ type Grouper interface {
 
 	// GroupInstall installs all packages in a group.
 	GroupInstall(ctx context.Context, group string, opts ...Option) error
+}
 
+// GroupQuerier provides an efficient check for whether a package group is
+// fully installed. This is an optional extension of [Grouper].
+// Supported by: pacman, dnf/yum.
+type GroupQuerier interface {
 	// GroupIsInstalled reports whether all packages in the group are installed.
 	GroupIsInstalled(ctx context.Context, group string) (bool, error)
 }