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
d=466bf553d7b405b8c227b8a99aa6ef8b7a4392a8'>refs</a><a class='active' href='/guix/log/gnu/packages/uml.scm'>log</a><a href='/guix/tree/gnu/packages/uml.scm?id=466bf553d7b405b8c227b8a99aa6ef8b7a4392a8'>tree</a><a href='/guix/commit/gnu/packages/uml.scm?id=466bf553d7b405b8c227b8a99aa6ef8b7a4392a8'>commit</a><a href='/guix/diff/gnu/packages/uml.scm?id=466bf553d7b405b8c227b8a99aa6ef8b7a4392a8'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/packages/uml.scm'>
<input type='hidden' name='id' value='466bf553d7b405b8c227b8a99aa6ef8b7a4392a8'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=466bf553d7b405b8c227b8a99aa6ef8b7a4392a8'>root</a>/<a href='/guix/log/gnu?id=466bf553d7b405b8c227b8a99aa6ef8b7a4392a8'>gnu</a>/<a href='/guix/log/gnu/packages?id=466bf553d7b405b8c227b8a99aa6ef8b7a4392a8'>packages</a>/<a href='/guix/log/gnu/packages/uml.scm?id=466bf553d7b405b8c227b8a99aa6ef8b7a4392a8'>uml.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/uml.scm?id=466bf553d7b405b8c227b8a99aa6ef8b7a4392a8&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-08-01 09:13:40 +0200'>2020-08-01</span></td><td><a href='/guix/commit/gnu/packages/uml.scm?id=033b43b2684334655e9c778d8a63f4f61561e759'>gnu: plantuml: Update to 1.2020.15.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/uml.scm (plantuml): Update to 1.2020.15.

Signed-off-by: Mathieu Othacehe &lt;othacehe@gnu.org&gt;
</span></span></td><td>Michael Rohleder</td></tr>
<tr><td><span title='2020-02-25 13:47:40 +0100'>2020-02-25</span></td><td><a href='/guix/commit/gnu/packages/uml.scm?id=1fc47a9b491bcc6d3a216592f00f71468a2c80f0'>gnu: plantuml: Update to 1.2020.1.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/uml.scm (plantuml): Update to 1.2020.1.
[arguments]&lt;#:phases&gt;[delete-extra-from-classpath]: Modify.
</span></span></td><td>Jelle Licht</td></tr>