First pass at installing an nrf52 core

Makefile

@@ -39,7 +39,7 @@ endif
 .DEFAULT_GOAL := smoke-sketches
 
 .PHONY: setup
-setup: $(ARDUINO_CLI_PATH) $(ARDUINO_DIRECTORIES_DATA)/arduino-cli.yaml install-arduino-core-avr install-arduino-core-kaleidoscope checkout-platform prepare-virtual
+setup: $(ARDUINO_CLI_PATH) $(ARDUINO_DIRECTORIES_DATA)/arduino-cli.yaml install-arduino-core-avr install-arduino-core-kaleidoscope checkout-platform prepare-virtual  install-arduino-core-nrf52
 	@:
 
 .PHONY: checkout-platform

etc/makefiles/arduino-cli.mk

@@ -111,7 +111,7 @@ ifneq ($(KALEIDOSCOPE_CCACHE),)
 ccache_wrapper_property := --build-property compiler.wrapper.cmd=ccache
 endif
 
-.PHONY: configure-arduino-cli install-arduino-core-kaleidoscope install-arduino-core-avr
+.PHONY: configure-arduino-cli install-arduino-core-kaleidoscope install-arduino-core-avr install-arduino-core-nrf52
 .PHONY: stupid-workaround-for-make-inclusion-semantics
 
 stupid-workaround-for-make-inclusion-semantics:
@@ -142,6 +142,12 @@ install-arduino-core-avr: arduino-update-cores
 	$(QUIET) $(ARDUINO_CLI) core install "arduino:avr"
 
 
+install-arduino-core-nrf52: arduino-update-cores
+	$(QUIET) ARDUINO_BOARD_MANAGER_ADDITIONAL_URLS=https://adafruit.github.io/arduino-board-index/package_adafruit_index.json \
+	$(ARDUINO_CLI) core update-index
+	$(QUIET) ARDUINO_BOARD_MANAGER_ADDITIONAL_URLS=https://adafruit.github.io/arduino-board-index/package_adafruit_index.json \
+	$(ARDUINO_CLI) core install "adafruit:nrf52"
+
 install-arduino-core-deps:
 	$(QUIET) $(ARDUINO_CLI) core install "keyboardio:avr-tools-only"
 	$(QUIET) $(ARDUINO_CLI) core install "keyboardio:gd32-tools-only"

etc/makefiles/sketch.mk

@@ -107,7 +107,7 @@ endif
 #	@: # dummy recipe for the sketch file
 
 
-.PHONY: compile configure-arduino-cli install-arduino-core-kaleidoscope install-arduino-core-avr 
+.PHONY: compile 
 .PHONY: disassemble decompile size-map flash clean all test
 
 all: compile