From 307bc0c0f96c77d6d5022b96fdd308c438881f63 Mon Sep 17 00:00:00 2001
From: John Rinehart <johnrichardrinehart@gmail.com>
Date: Thu, 28 May 2026 21:17:10 -0400
Subject: [PATCH] scid-vs-pc: fix build with Tcl stubs default

scid-vs-pc uses a custom configure script rather than a TEA configure
script, so it rejects the --enable-stubs flag now added by
tcl.mkTclDerivation. Disable the default Tcl configure flags for this
package and pass only the Tcl library/include paths and exec prefix that
upstream's configure accepts.

Keep the dependency argument as libx11, matching the package name exposed
by nixpkgs.

Tested: nix build --no-link --print-out-paths github:johnrichardrinehart/nixpkgs/fix-scid-vs-pc-tcl-stubs#scid-vs-pc
---
 pkgs/by-name/sc/scid-vs-pc/package.nix | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkgs/by-name/sc/scid-vs-pc/package.nix b/pkgs/by-name/sc/scid-vs-pc/package.nix
index 6aa105841bd0..060596c938ce 100644
--- a/pkgs/by-name/sc/scid-vs-pc/package.nix
+++ b/pkgs/by-name/sc/scid-vs-pc/package.nix
@@ -35,9 +35,13 @@ tcl.mkTclDerivation rec {
     zlib
   ];
 
+  addTclConfigureFlags = false;
   configureFlags = [
     "BINDIR=${placeholder "out"}/bin"
     "SHAREDIR=${placeholder "out"}/share"
+    "--with-tcl=${tcl}/lib"
+    "--with-tclinclude=${tcl}/include"
+    "--exec-prefix=${placeholder "out"}"
   ];
 
   postInstall = ''