A skin smoothing showcase using RawTherapee's Local adjustements

If you use pamac as your Package Manager for downloading/updating packages, it’s really not complicated:

  1. in pamac preferences, just turn on Enable AUR support in the AUR tab
  2. search rawtherapee-git
  3. double-click on the result, it will show you the details
  4. click on Build files from the left side panel
  5. add the 2 lines as highlighted on this screenshot:
  6. click on Build and then Apply

Then pamac will do everything for you (checking/downloading dependencies, configuring, compiling and installing).
If you had a previous version of RT installed, it will remove it, but don’t be afraid, the newlocallab branch is not far behind the current dev version, and it is probably ahead of your unstable build.
And if it doesn’t work for you, simply reinstall your usual unstable build and it should replace the newlocallab build.