To install devkitppc use the automated installer at:
http://sourceforge.net/projects/devkitpro/files/Automated%20Installer/
Just run: "./devkitPPCupdate.pl"
I use Linux and I could compile this way:
Add powerpc-eabi-gcc to the path: "export PATH=$PATH:/home/me/devkitPro/devkitPPC/bin"
Comment (or remove) the "cygpath" line in the "Makefile" files: "#override CURDIR:=$(shell cygpath -m $(CURDIR))"
Specify which example you want to build: "python...
I took a look at the rail and noticed that the two last pins were soldered for some reason, luckly I still had the rail of my broken joycon so after I swapped them I was able to use it attached to the console