Description of problem: Since version 0.31 shotwell has a new feature: face detection. In the fedora packaged versions, this feature is not enabled, though. Please enable the opt-in compile option to give all fedora users the possibiliy to use all shotwell features. Thanks! Steps to Reproduce: 1. Start shotwell installed from fedora's rpm repos (or flatpak FWIW) 2. Open any image. 3. Don't have a "Faces" button beneath the image (cf. with screenshot in GNOME software) Actual results: No "Faces" button, no face detection feature. Expected results: Ability to use the new face detection feature. Additional info: "Facedetection used to require OpenCV 3 where DNN wasn’t packaged for Fedora etc. This has changed lately to work with OpenCV 4 which is packaged all around, but It’s still an opt-in compile time feature, though." from the shotwell maintainer: https://discourse.gnome.org/t/face-detection-feature-missing-in-fedora-33-shotwell-0-31-3/5212 This might be the opt-in compile time feature but I have no knowledge of the build-system: https://gitlab.gnome.org/GNOME/shotwell/-/blob/master/meson.build#L103
Technically speaking, enabling that feature seems to be easy. However, in the linked Discourse thread, it turned out that three auxiliary files are needed (e.g., a pre-trained model) for face recognition, and their licensing situation isn't fully clear yet. Maybe the upstream maintainer can shed some light on it.
Licensing is discussed here https://gitlab.gnome.org/GNOME/shotwell/-/issues/318 .
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