Add packaging for *nix to Makefile

.gitignore

@@ -2,3 +2,4 @@
 *.love
 tmp/
 *.zip
+*.tar.gz

Makefile

@@ -1,17 +1,22 @@
 LOVEFILE=eitmer.love
+WIN32_ZIPBALL=eitmer-win32.zip
+NIX_TARBALL=eitmer-nix.tar.gz
 
 .PHONY: all clean distclean run
 
-all: $(LOVEFILE) eitmer-win32.zip
+all: $(LOVEFILE) $(WIN32_ZIPBALL) $(NIX_TARBALL)
 
 $(LOVEFILE): bundle/main.lua bundle/conf.lua bundle/win_image.png
 	cd bundle; zip -9 -r ../$@ *
 
-eitmer-win32.zip: $(LOVEFILE)
+$(WIN32_ZIPBALL): $(LOVEFILE) CC0 README
 	sh scripts/package-win32.sh
 
+$(NIX_TARBALL): $(LOVEFILE) CC0 README
+	sh scripts/package-nix.sh
+
 clean:
-	rm -rf $(LOVEFILE) *.zip tmp/
+	rm -rf $(LOVEFILE) $(WIN32_ZIPBALL) $(NIX_TARBALL) tmp/
 
 distclean: clean
 

scripts/package-nix.sh

@@ -0,0 +1,10 @@
+die() {
+	echo "$0: Error: $*" >&2
+	exit 1
+}
+
+mkdir -p tmp/eitmer-nix || die mkdir
+cp eitmer.love README CC0 tmp/eitmer-nix
+
+cd tmp
+tar czvf ../eitmer-nix.tar.gz eitmer-nix