nixpkgs/pkgs/development/compilers/vala/disable-graphviz-0.56.8.patch

diff --git a/configure.ac b/configure.ac
index 088e8f3b5..bded3c54c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -196,13 +196,15 @@ AC_SUBST(GMODULE_LIBS)
 
 AC_ARG_WITH(cgraph, AS_HELP_STRING([--with-cgraph], [Required flag for cross-compilation to define capability of graphviz]), [], with_cgraph=check)
 AC_ARG_ENABLE(valadoc, AS_HELP_STRING([--disable-valadoc], [Disable valadoc]), enable_valadoc=$enableval, enable_valadoc=yes)
+AC_ARG_ENABLE(graphviz, AS_HELP_STRING([--disable-graphviz], [Disable graphviz usage for valadoc]), enable_graphviz=$enableval, enable_graphviz=yes)
 AS_IF([test "$VALAC" != :], [FOUND_VALAC_VERION=`$VALAC --version | sed 's/Vala  *//'`
 	AS_VERSION_COMPARE(["$FOUND_VALAC_VERION"], ["$VALAC_VALADOC_REQUIRED"], [
 		AC_MSG_WARN([Force disable build of valadoc, valac >= $VALAC_VALADOC_REQUIRED is required])
 		enable_valadoc=no
 	])
 ])
-if test x$enable_valadoc = xyes; then
+if test x$enable_valadoc = xyes && test x$enable_graphviz = xyes; then
+	VALAFLAGS="$VALAFLAGS -D HAVE_GRAPHVIZ"
 	PKG_CHECK_MODULES(LIBGVC, libgvc >= $LIBGVC_REQUIRED)
 	AC_MSG_CHECKING([for CGRAPH])
 	cgraph_tmp_LIBADD="$LIBADD"
@@ -244,6 +246,7 @@ if test x$enable_valadoc = xyes; then
 fi
 AM_CONDITIONAL(HAVE_CGRAPH, test "$have_cgraph" = "yes")
 AM_CONDITIONAL(ENABLE_VALADOC, test x$enable_valadoc = xyes)
+AM_CONDITIONAL(ENABLE_GRAPHVIZ, test x$enable_graphviz = xyes)
 
 AC_PATH_PROG([G_IR_COMPILER], [g-ir-compiler], :)
 AM_CONDITIONAL(HAVE_G_IR_COMPILER, test "$G_IR_COMPILER" != :)
diff --git a/libvaladoc/Makefile.am b/libvaladoc/Makefile.am
index dad9a9e99..e23266606 100644
--- a/libvaladoc/Makefile.am
+++ b/libvaladoc/Makefile.am
@@ -119,10 +119,6 @@ libvaladoc_la_VALASOURCES = \
 	content/tablerow.vala \
 	content/taglet.vala \
 	content/text.vala \
-	charts/chart.vala \
-	charts/chartfactory.vala \
-	charts/hierarchychart.vala \
-	charts/simplechartfactory.vala \
 	parser/manyrule.vala \
 	parser/oneofrule.vala \
 	parser/optionalrule.vala \
@@ -149,19 +145,34 @@ libvaladoc_la_VALASOURCES = \
 	highlighter/codetoken.vala \
 	highlighter/highlighter.vala \
 	html/basicdoclet.vala \
-	html/htmlchartfactory.vala \
 	html/linkhelper.vala \
 	html/cssclassresolver.vala \
 	html/htmlmarkupwriter.vala \
 	html/htmlrenderer.vala \
 	$(NULL)
 
+if ENABLE_GRAPHVIZ
+libvaladoc_la_VALASOURCES += \
+	charts/chart.vala \
+	charts/chartfactory.vala \
+	charts/hierarchychart.vala \
+	charts/simplechartfactory.vala \
+	html/htmlchartfactory.vala \
+	$(NULL)
+endif
+
 libvaladoc@PACKAGE_SUFFIX@_la_SOURCES = \
 	libvaladoc.vala.stamp \
 	$(libvaladoc_la_VALASOURCES:.vala=.c) \
-	gvc-compat.c \
 	$(NULL)
 
+if ENABLE_GRAPHVIZ
+libvaladoc@PACKAGE_SUFFIX@_la_SOURCES += \
+	gvc-compat.c
+
+LIBGVC_PKG = --vapidir $(top_srcdir)/vapi --pkg libgvc
+endif
+
 valadoc@PACKAGE_SUFFIX@.vapi valadoc.h: libvaladoc.vala.stamp
 libvaladoc.vala.stamp: $(libvaladoc_la_VALASOURCES)
 	$(VALA_V)$(VALAC) \
@@ -174,7 +185,7 @@ libvaladoc.vala.stamp: $(libvaladoc_la_VALASOURCES)
 		--library valadoc \
 		--vapi valadoc@PACKAGE_SUFFIX@.vapi \
 		--vapidir $(top_srcdir)/vapi --pkg gmodule-2.0 \
-		--vapidir $(top_srcdir)/vapi --pkg libgvc \
+		$(LIBGVC_PKG) \
 		--vapidir $(top_srcdir)/gee --pkg gee \
 		--vapidir $(top_srcdir)/vala --pkg vala \
 		--vapidir $(top_srcdir)/ccode --pkg ccode \
@@ -206,6 +217,9 @@ nodist_pkgconfig_DATA = valadoc@PACKAGE_SUFFIX@.pc
 
 valadoc@PACKAGE_SUFFIX@.pc: valadoc.pc
 	cp $< $@
+if !ENABLE_GRAPHVIZ
+	sed -i "s/libgvc //g" $@
+endif
 
 vapidir = $(datadir)/vala/vapi
 dist_vapi_DATA = valadoc@PACKAGE_SUFFIX@.vapi
@@ -213,6 +227,9 @@ nodist_vapi_DATA = valadoc@PACKAGE_SUFFIX@.deps
 
 valadoc@PACKAGE_SUFFIX@.deps: valadoc.deps
 	cp $< $@
+if !ENABLE_GRAPHVIZ
+	sed -i "s/libgvc//g" $@
+endif
 
 EXTRA_DIST = \
 	$(libvaladoc_la_VALASOURCES) \
diff --git a/libvaladoc/html/basicdoclet.vala b/libvaladoc/html/basicdoclet.vala
index f4999efd4..03871d687 100644
--- a/libvaladoc/html/basicdoclet.vala
+++ b/libvaladoc/html/basicdoclet.vala
@@ -46,7 +46,11 @@ public abstract class Valadoc.Html.BasicDoclet : Api.Visitor, Doclet {
 	protected HtmlRenderer _renderer;
 	protected Html.MarkupWriter writer;
 	protected Html.CssClassResolver cssresolver;
+#if HAVE_GRAPHVIZ
 	protected Charts.Factory image_factory;
+#else
+	protected void* image_factory;
+#endif
 	protected ErrorReporter reporter;
 	protected string package_list_link = "../index.html";
 
@@ -120,7 +124,9 @@ public abstract class Valadoc.Html.BasicDoclet : Api.Visitor, Doclet {
 		this.linker = new LinkHelper ();
 
 		_renderer = new HtmlRenderer (settings, this.linker, this.cssresolver);
+#if HAVE_GRAPHVIZ
 		this.image_factory = new SimpleChartFactory (settings, linker);
+#endif
 	}
 
 
@@ -1028,6 +1034,7 @@ public abstract class Valadoc.Html.BasicDoclet : Api.Visitor, Doclet {
 	}
 
 	protected void write_image_block (Api.Node element) {
+#if HAVE_GRAPHVIZ
 		if (element is Class || element is Interface || element is Struct) {
 			unowned string format = (settings.use_svg_images ? "svg" : "png");
 			var chart = new Charts.Hierarchy (image_factory, element);
@@ -1047,6 +1054,7 @@ public abstract class Valadoc.Html.BasicDoclet : Api.Visitor, Doclet {
 									   this.get_img_path_html (element, format)});
 			writer.add_usemap (chart);
 		}
+#endif
 	}
 
 	public void write_namespace_content (Namespace node, Api.Node? parent) {
diff --git a/libvaladoc/html/htmlmarkupwriter.vala b/libvaladoc/html/htmlmarkupwriter.vala
index 5aa4afdea..e79b0b8f5 100644
--- a/libvaladoc/html/htmlmarkupwriter.vala
+++ b/libvaladoc/html/htmlmarkupwriter.vala
@@ -51,12 +51,16 @@ public class Valadoc.Html.MarkupWriter : Valadoc.MarkupWriter {
 		}
 	}
 
+#if HAVE_GRAPHVIZ
 	public unowned MarkupWriter add_usemap (Charts.Chart chart) {
 		string? buf = (string?) chart.write_buffer ("cmapx");
 		if (buf != null) {
 			raw_text ("\n");
 			raw_text ((!) buf);
 		}
+#else
+	public unowned MarkupWriter add_usemap (void* chart) {
+#endif
 
 		return this;
 	}