You'll need the following dependencies:
- desktop-file-utils
- intltool
- libexif-dev
- libgee-0.8-dev
- libgeocode-glib-dev
- libgexiv2-dev
- libglib2.0-dev
- libgphoto2-dev
- libgranite-dev >= 6.0.0
- libgstreamer1.0-dev
- libgstreamer-plugins-base1.0-dev
- libgtk-3-dev
- libgudev-1.0-dev
- libhandy-1-dev
- libraw-dev
- libsqlite3-dev
- libwebp-dev
- meson
- valac >= 0.40
Run meson build to configure the build environment. Change to the build directory and run ninja to build
meson build --prefix=/usr
cd build
ninja
To install, use ninja install, then execute with io.elementary.photos
sudo ninja install
io.elementary.photos