From 64e5a1068bdb5e7bd97283cc927088c870b8208e Mon Sep 17 00:00:00 2001
From: Ophestra <cat@gensokyo.uk>
Date: Wed, 1 Apr 2026 17:12:57 +0900
Subject: [PATCH] internal/rosa: libtasn1 artifact

Optional dependency of p11-kit.

Signed-off-by: Ophestra <cat@gensokyo.uk>
---
 internal/rosa/all.go |  3 ++-
 internal/rosa/gnu.go | 23 +++++++++++++++++++++++
 internal/rosa/p11.go |  6 ++++++
 3 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/internal/rosa/all.go b/internal/rosa/all.go
index f0d0716d..eeb6b7db 100644
--- a/internal/rosa/all.go
+++ b/internal/rosa/all.go
@@ -82,8 +82,9 @@ const (
 	Libmd
 	Libmnl
 	Libnftnl
-	Libtool
 	Libseccomp
+	Libtasn1
+	Libtool
 	Libucontext
 	Libxml2
 	Libxslt
diff --git a/internal/rosa/gnu.go b/internal/rosa/gnu.go
index 8f67505c..4b1f4303 100644
--- a/internal/rosa/gnu.go
+++ b/internal/rosa/gnu.go
@@ -781,6 +781,29 @@ func init() {
 	}
 }
 
+func (t Toolchain) newLibtasn1() (pkg.Artifact, string) {
+	const (
+		version  = "4.21.0"
+		checksum = "9DYI3UYbfYLy8JsKUcY6f0irskbfL0fHZA91Q-JEOA3kiUwpodyjemRsYRjUpjuq"
+	)
+	return t.NewPackage("libtasn1", version, pkg.NewHTTPGetTar(
+		nil, "https://ftpmirror.gnu.org/gnu/libtasn1/libtasn1-"+version+".tar.gz",
+		mustDecode(checksum),
+		pkg.TarGzip,
+	), nil, (*MakeHelper)(nil)), version
+}
+func init() {
+	artifactsM[Libtasn1] = Metadata{
+		f: Toolchain.newLibtasn1,
+
+		Name:        "libtasn1",
+		Description: "the ASN.1 library used by GnuTLS, p11-kit and some other packages",
+		Website:     "https://www.gnu.org/software/libtasn1/",
+
+		ID: 1734,
+	}
+}
+
 func (t Toolchain) newBinutils() (pkg.Artifact, string) {
 	const (
 		version  = "2.46.0"
diff --git a/internal/rosa/p11.go b/internal/rosa/p11.go
index 7e491dc0..82c3c7ac 100644
--- a/internal/rosa/p11.go
+++ b/internal/rosa/p11.go
@@ -17,6 +17,8 @@ func (t Toolchain) newP11Kit() (pkg.Artifact, string) {
 	},
 		Coreutils,
 		Diffutils,
+
+		Libtasn1,
 	), version
 }
 func init() {
@@ -27,6 +29,10 @@ func init() {
 		Description: "provides a way to load and enumerate PKCS#11 modules",
 		Website:     "https://p11-glue.freedesktop.org/p11-kit.html",
 
+		Dependencies: P{
+			Libtasn1,
+		},
+
 		ID: 2582,
 	}
 }