This patch hard-codes the Tk library directory during package initialization.

See <http://core.tcl.tk/tk/tktview/765642ffffffffffffff>.

diff --git a/generic/tkWindow.c b/generic/tkWindow.c
index b5cbbab..96b5501 100644
--- a/generic/tkWindow.c
+++ b/generic/tkWindow.c
@@ -988,6 +988,7 @@ TkCreateMainWindow(
 
     Tcl_SetVar2(interp, "tk_patchLevel", NULL, TK_PATCH_LEVEL, TCL_GLOBAL_ONLY);
     Tcl_SetVar2(interp, "tk_version",    NULL, TK_VERSION,     TCL_GLOBAL_ONLY);
+    Tcl_SetVar2(interp, "tk_library",    NULL, TK_LIBRARY,     TCL_GLOBAL_ONLY);
 
     tsdPtr->numMainWindows++;
     return tkwin;
diff --git a/unix/Makefile.in b/unix/Makefile.in
index f21fdbb..c61b0df 100644
--- a/unix/Makefile.in
+++ b/unix/Makefile.in
@@ -1029,7 +1029,7 @@ tkVisual.o: $(GENERIC_DIR)/tkVisual.c
 	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tkVisual.c
 
 tkWindow.o: $(GENERIC_DIR)/tkWindow.c
-	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tkWindow.c
+	$(CC) -c $(CC_SWITCHES) -DTK_LIBRARY=\"${TK_LIBRARY}\" $(GENERIC_DIR)/tkWindow.c
 
 tkButton.o: $(GENERIC_DIR)/tkButton.c
 	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tkButton.c
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<tr><td><span title='2024-08-01 23:47:07 +0800'>2024-08-01</span></td><td><a href='/guix/commit/gnu/packages/upnp.scm?id=882077fd30ac5bec90b074f4525a47a16a15f0a0'>gnu: readymedia: Fix reproducible build.</a><span class='msg-avail'>...</span></td><td>Vagrant Cascadian</td></tr>
<tr><td><span title='2024-08-01 23:47:07 +0800'>2024-08-01</span></td><td><a href='/guix/commit/gnu/packages/upnp.scm?id=4f5575d376875eb123a5564f71c26af1f8137358'>gnu: readymedia: Add coreutils to dependencies.</a><span class='msg-avail'>...</span></td><td>Fabio Natali via Guix-patches via</td></tr>
<tr><td><span title='2024-07-21 21:41:08 +0200'>2024-07-21</span></td><td><a href='/guix/commit/gnu/packages/upnp.scm?id=c33e95b5483969bc20277bc7a8bc408e522e0919'>gnu: gerbera: Update to 2.2.0.</a><span class='msg-avail'>...</span></td><td>Ricardo Wurmus</td></tr>