Interview with Øyvind Kolås, GIMP developer

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An interview with Øyvind Kolås (known as 'Pippin'), the maintainer of GEGL and babl — the color and image processing engines powering GIMP. Originally conducted in February 2017 during Wilber Week, the interview covers how Øyvind got involved in GIMP, what GEGL is and how it enables non-destructive editing, comparisons with GStreamer and libvips, GEGL's graph-based architecture, performance considerations, and his use of Patreon to fund his open-source work. He shares his background spanning fine arts, demoscene programming, and computer science, and reflects on the challenges of sustaining free software development financially.