add Makefile

1 files changed, 73 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..2efc68e
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,73 @@
+SHELL := /bin/bash -eufo pipefail
+PREFIX ?= $(HOME)
+FIND ?= gfind
+
+.PHONY: all
+all: clean merge stow after_stow
+
+.PHONY: after_stow
+after_stow:
+	ln -nfs "$(PREFIX)/.nvim" "$(PREFIX)/.config/nvim"
+	ln -nfs "$(PREFIX)/.zls.json" "$(PREFIX)/Library/Application Support/zls.json"
+
+.PHONY: stow
+stow:
+	@# stow doesn't support __stowing?__ directories with symlinks, see:
+	@# https://github.com/aspiers/stow/issues/51
+	@# what i do here is a stow-like glue
+	@# - loop through all top level directories in merged
+	@# - for each file or directory in the top level
+	@# - create a symlink in $HOME pointing to merged
+	@# this has one important limitation: it doesn't support shared
+	@# nested directories as stow does. for example, if you have a directory
+	@# like: merged/nvim/.config/nvim, $HOME/.config would end up as a link,
+	@# which is not ideal since it contains other configs too!
+	@#
+	@# the solution is to never use shared directories and setup links after
+	@# this target with the after_stow target.
+	$(FIND) ./merged -mindepth 1 -maxdepth 1 -type d -print0 |\
+		xargs -0 -S 600 -I{} $(SHELL) -c '\
+			export package={}; \
+			echo "stowing - $${package#./merged/}"; \
+			$(FIND) "$${package}" -mindepth 1 -maxdepth 1 -print0 |\
+				xargs -0 -I{} $(SHELL) -c '\''\
+					target={}; \
+					echo "linking - $${target#./merged/}"; \
+					ln -nfs "$(PWD)/$${target#./}" \
+						"$(PREFIX)/$${target#.\/merged\/$${package#./merged/}\/}"; \
+				'\''; \
+		'
+
+.PHONY: merge
+merge: merge_check_dups
+	@# create directory structure
+	rsync -a --include '*/' --exclude '*' "private/" "merged"
+	rsync -a --include '*/' --exclude '*' "public/" "merged"
+	rm -rf merged/.git
+	@# link files to their destination
+	$(FIND) ./public -not \( -path ./public/.git -prune \) -type f -print0 |\
+		xargs -0 -S 600 -I '{}' $(SHELL) -c '\
+			file={}; \
+			ln -s "$$(realpath $$file)" "./merged/$${file#./public/}"; \
+		'
+	$(FIND) ./private -not \( -path ./private/.git -prune \) -type f -print0 |\
+		xargs -0 -S 600 -I '{}' $(SHELL) -c '\
+			file={}; \
+			ln -s "$$(realpath $$file)" "./merged/$${file#./private/}"; \
+		'
+
+.PHONY: merge_check_dups
+merge_check_dups:
+	DUPES=$$({ \
+		$(FIND) ./private -type f -printf '%P\n'; \
+		$(FIND) ./public -type f -printf '%P\n'; \
+	} | sort | uniq -d); \
+	if [ "$$(echo -n "$$DUPES" | wc -c)" -gt 0 ]; then \
+		echo "ERROR: Duplicate files found in private and public"; \
+		echo "$$DUPES"; \
+		exit 1; \
+	fi
+
+.PHONY: clean
+clean:
+	rm -rf merged