From b748eac9991f87504a072942e300b7a9274d9866 Mon Sep 17 00:00:00 2001
From: Francesco Gazzetta <fgaz@fgaz.me>
Date: Mon, 16 Mar 2026 18:01:57 +0100
Subject: [PATCH] tclPackages.tcllib: use tclRequiresCheck

---
 .../tcl-modules/by-name/tc/tcllib/package.nix            | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/pkgs/development/tcl-modules/by-name/tc/tcllib/package.nix b/pkgs/development/tcl-modules/by-name/tc/tcllib/package.nix
index 33ca7b53001b..1d57dc6ec0c2 100644
--- a/pkgs/development/tcl-modules/by-name/tc/tcllib/package.nix
+++ b/pkgs/development/tcl-modules/by-name/tc/tcllib/package.nix
@@ -19,6 +19,15 @@ mkTclDerivation rec {
 
   buildFlags = [ "all" ] ++ lib.optional withCritcl "critcl";
 
+  # Tcllib contains a huge amount of Tcl packages:
+  # https://core.tcl-lang.org/tcllib/doc/trunk/embedded/md/toc.md
+  # We sample a small amount of popular ones.
+  tclRequiresCheck = [
+    "struct::graph"
+    "doctools"
+    "json"
+  ];
+
   meta = {
     homepage = "https://core.tcl-lang.org/tcllib/";
     description = "Tcl-only library of standard routines for Tcl";