Configuring redshift

Makefile

@@ -1,13 +1,19 @@
-SOURCES := $(shell ls | grep -E -v 'README|Makefile')
-TARGETS := $(patsubst %,$(HOME)/.%,$(SOURCES))
+TOP_SOURCES := $(git ls-files | grep -vE 'README|Makefile|^config|^\.git|^\.travis' | grep -v /)
+CONFIG_SOURCES := $(shell git ls-files config)
+TARGETS := \
+	$(patsubst %,$(HOME)/.%,$(TOP_SOURCES)) \
+	$(patsubst %,$(HOME)/.%,$(CONFIG_SOURCES))
 
 $(HOME)/.%: %
-	$(RM) '$@' && ln -svf '$(PWD)/$^' '$@'
+	$(RM) '$@' && mkdir -p $(dir $@) && ln -svf '$(PWD)/$^' '$@'
 
 .PHONY: all
-all: $(TARGETS)
+all: $(HOME)/.config $(TARGETS)
+
+$(HOME)/.config:
+	mkdir -p $@
 
 .PHONY: echo
 echo:
-	@echo SOURCES=$(SOURCES)
+	@echo TOP_SOURCES=$(TOP_SOURCES)
 	@echo TARGETS=$(TARGETS)

config/redshift.conf

@@ -0,0 +1,6 @@
+[redshift]
+temp-day=6500
+temp-night=3000
+transition=1
+brightness-day=1.0
+brightness-night=0.8

config/redshift/hooks/brightness.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+
+main() {
+  : "${BRIGHTNESS_DAY:=100}"
+  : "${BRIGHTNESS_TRANSITION:=50}"
+  : "${BRIGHTNESS_NIGHT:=20}"
+  : "${FADE_TIME:=60000}"
+
+  if [[ "${1}" != period-changed ]]; then
+    return
+  fi
+
+  case "${3}" in
+  night)
+    xbacklight -set "${BRIGHTNESS_NIGHT}" -time "${FADE_TIME}"
+    ;;
+  transition)
+    xbacklight -set "${BRIGHTNESS_TRANSITION}" -time "${FADE_TIME}"
+    ;;
+  daytime)
+    xbacklight -set "${BRIGHTNESS_DAY}" -time "${FADE_TIME}"
+    ;;
+  esac
+}
+
+main "$@"