From the R2RePak thread in #research chat in the Northstar Discord by Spoon. This is the archive of the pseudo guide. Discord Message Link at the bottom of the page.
This is no longer the original guide. This is now an edited version of pseudo guide.
In the .zip you have RePak.exe and folders called "assets", "config", and "rpaks".
the "assets" folder is where you will put your folder/file structure and textures etc.
the "config" folder is where you will put the .json files which determine how the rpak is made
the "rpaks" folder is where RePak will put the rpaks once they have been made
3 ) pack_all.bat (included)
In the folder with RePak.exe, make a .bat file, i called mine "pack_all.bat".
Inside the .bat put
Making your rpaks
1 ) Make config.json
Make the .json file, recommend config.json but it doesn't matter.
2 ) Copy and paste
Go into the .json file, and copy the following into it for now
if your output folder and your asset folder have different names, be sure to change the "assetsDir" and "outputDir" respectively
This is set up now to make a ronin nose art, you can change the paths in the .json to make it override other things. Included .zip removed everything but the _col map.
You can get the paths for things through Legion+.
3 ) Use your textures
For each entry in the json file, you need to make sure that the file exists in the assets folder so it can be packed.
Textures must be in .dds format, and with one of the following compression methods:
DXT1
BC4U
BC5U
DX10