Bug 1218653

- https://www.phoronix.com/news/GIMP-3.0-May-2024-Schedule
- https://librearts.org/2023/11/gimp-3-0-roadmap/

current test packages are in:
https://build.opensuse.org/project/show/graphics:gimp:master

i dropped a mail to Jehan to find out if the master snapshots of gegl and babl are still needed or not.

if we want to have parallel buildable packages it would be easy to rename the master gimp package to gimp3 and apply this patch:

```
Index: gimp.spec
===================================================================
--- gimp.spec   (revision 1878)
+++ gimp.spec   (working copy)
@@ -67,14 +67,16 @@
 %global abiver 5
 %global apiver 3.0
 
-Name:           gimp
+%define pkg_name gimp
+
+Name:           gimp3
 Version:        3.0
 Release:        0
 Summary:        The GNU Image Manipulation Program
 License:        GPL-3.0-or-later
 Group:          Productivity/Graphics/Bitmap Editors
 URL:            https://www.gimp.org/
-Source:         %{name}-%{version}.tar.zst
+Source:         %{pkg_name}-%{version}.tar.zst
 Source1:        macros.gimp
 # openSUSE palette file
 Source2:        openSUSE.gpl
@@ -184,6 +186,7 @@
 Provides:       gimp-2.0 = %{version}
 Provides:       gimp(abi) = %{abiver}
 Provides:       gimp(api) = %{apiver}
+Conflicts:      gimp
 
 %description
 The GIMP is an image composition and editing program, which can be
@@ -296,7 +299,7 @@
 %endif
 
 %prep
-%autosetup -p1
+%autosetup -p1 -n %{pkg_name}-%{version}
 
 %build
 #define _lto_cflags %{nil}
```