feat: add basic Makefile and .gitignore

.gitignore

@@ -0,0 +1 @@
+.bundles/

Makefile

@@ -0,0 +1,46 @@
+SHELL = /bin/sh
+
+ifneq (,$(wildcard .bundle-env))
+include .bundle-env
+endif
+
+ifeq (root,$(shell whoami))
+check-root = @true
+else
+check-root = $(error this target requires root)
+endif
+
+ifeq (dom0,$(shell hostname))
+check-dom0 = @true
+check-domu = $(error this target must be run in the guest qube)
+else
+check-dom0 = $(error this target must be run in dom0)
+check-domu = @true
+endif
+
+BUNDLEOUT := .bundles/dom0.bundle
+BUNDLEIN := .bundles/domu.bundle
+
+clean-workdir = git init -q -b $* && git diff --quiet && git diff --cached --quiet || (echo 'dirty tree; check git status' && false)
+
+create-bundle = git show-ref --verify --quiet refs/remotes/${1}/$* \
+	&& git bundle create $(BUNDLEOUT) $(1)/$*..$* \
+	|| git bundle create $(BUNDLEOUT) $*
+.PHONY: pull pull/%
+
+pull: pull/$(shell git branch --show-current)
+pull%:
+	$(check-dom0)
+	$(clean-workdir)
+
+	qvm-run -p $(GUEST) "cd $(GUEST_REPO) && $(call create-bundle,dom0)" </dev/null
+
+	qvm-run -p $(GUEST) "cat $(GUEST_REPO)/$(BUNDLEIN)" </dev/null >$(BUNDLEIN)
+
+	git remote add $(GUEST) $(BUNDLEIN) || true
+
+	git pull $(GUEST) $*:$*
+		
+	qvm-run -p $(GUEST) "cd $(GUEST_REPO) && git update-ref refs/remotes/dom0/$* $*" </dev/null
+
+	@echo "updated branch $* from $(GUEST)"