[gimp] flatpak: Build graphviz as GEGL submodule

[Jehan <jehanp src gnome org>]

commit d468722828c95eaa6393880e5f0ffeb577dd8560
Author: Ondřej Míchal <harrymichal seznam cz>
Date:   Sun May 23 13:37:58 2021 +0200

    flatpak: Build graphviz as GEGL submodule
    
    See https://github.com/flathub/org.gimp.GIMP/commit/633de34a11b90ad1585221b14b79f40f9bf61a1c
    See https://github.com/flathub/org.gimp.GIMP/commit/dd06088c266ecc8ecf5f27783f04264de8ec8edd

 build/flatpak/org.gimp.GIMP-nightly.json | 34 ++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
---
diff --git a/build/flatpak/org.gimp.GIMP-nightly.json b/build/flatpak/org.gimp.GIMP-nightly.json
index ef095e443c..6bc315dddb 100644
--- a/build/flatpak/org.gimp.GIMP-nightly.json
+++ b/build/flatpak/org.gimp.GIMP-nightly.json
@@ -425,6 +425,40 @@
                     "url": "https://gitlab.gnome.org/GNOME/gegl.git";,
                     "branch": "master"
                 }
+            ],
+            "modules": [
+                {
+                    "name": "graphviz",
+                    "buildsystem": "autotools",
+                    "sources": [
+                        {
+                            "type": "archive",
+                            "url": 
"https://www2.graphviz.org/Packages/stable/portable_source/graphviz-2.44.1.tar.gz";,
+                            "sha256": "8e1b34763254935243ccdb83c6ce108f531876d7a5dfd443f255e6418b8ea313"
+                        }
+                    ],
+                    "cleanup": [
+                        "/bin/??",
+                        "/bin/????*",
+                        "/bin/fdp",
+                        "/bin/nop",
+
+                        "/lib/libgvpr*",
+                        "/lib/liblab*",
+                        "*.la",
+
+                        "/lib/graphviz/libgvplugin_core*",
+                        "/lib/graphviz/libgvplugin_g*",
+                        "/lib/graphviz/libgvplugin_neato_layout*",
+                        "/lib/graphviz/libgvplugin_poppler*",
+                        "/lib/graphviz/libgvplugin_rsvg*",
+                        "/lib/graphviz/libgvplugin_visio*",
+                        "/lib/graphviz/libgvplugin_webp*",
+                        "/lib/graphviz/libgvplugin_xlib*",
+
+                        "/share"
+                    ]
+                }
             ]
         },
         {