From a35e328ca65bef9796e956fd6148ba770e93f03f Mon Sep 17 00:00:00 2001
From: Andrew Cady <d@jerkface.net>
Date: Fri, 29 May 2020 08:48:25 -0400
Subject: auto-install dependencies

---
 .gitignore |  1 +
 Makefile   | 44 +++++++++++++++++++++++++++++++++++++++-----
 control.sh |  3 ++-
 3 files changed, 42 insertions(+), 6 deletions(-)

diff --git a/.gitignore b/.gitignore
index 4db28ac..75418b0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,2 @@
 control
+equivs-stamp
diff --git a/Makefile b/Makefile
index 29b9577..e1af5a9 100644
--- a/Makefile
+++ b/Makefile
@@ -1,15 +1,46 @@
-control: control.sh depends.control .git/refs/heads/master
-	./control.sh depends.control > $@
+all: control equivs-stamp
+
+ARCH := $(shell dpkg-architecture -q DEB_BUILD_ARCH)
+ifndef VERSION
+VERSION := $(shell TZ=UTC date -Is | tr -d :- | tr T . | sed 's/+.*//')
+endif
+export VERSION
+PKG ?= $(notdir $(PWD))
+
+PKG_FILE ?= $(PKG)_$(VERSION)_$(ARCH).deb
+export PKG_FILE
+
+$(PKG_FILE): control
+	equivs-build control
+
+equivs-stamp: control
+	$(MAKE) $(PKG_FILE)
+	$(MAKE) install-remove-equivs
+	rm $(PKG_FILE)
+	touch $@
+
+.PHONY: install-remove-equivs
+install-remove-equivs:
+ifneq (0,$(shell id -u))
+	sudo $(MAKE) PKG_FILE=$(PKG_FILE) MAKEFLAGS=$(MAKEFLAGS) $@
+else
+	dpkg -i $(PKG_FILE)
+	f=$(PKG_FILE); dpkg -r $${f%%_*}
+endif
+#.
 
 DD_USER = dyndns
 DD_GROUP = dyndns
 
-install-dyndns-server:
+.PHONY: install all
+
+install: equivs-stamp
 ifneq ($(shell id -u),0)
-	$(SUDO_MAKE) $@
+	sudo $(MAKE) MAKEFLAGS=$(MAKEFLAGS) $@
 else
 	: apt install pdns
-	: adduser $(DD_USER)
+	getent passwd $(DD_USER) || useradd --system --create-home $(DD_USER)
+	false
 	chown root:$(DD_GROUP) /etc/powerdns
 	chown pdns:$(DD_GROUP) /etc/powerdns/powerdns.sqlite3
 	chmod g+rwx /etc/powerdns
@@ -25,3 +56,6 @@ endef
 
 ~$(DD_USER)/.ssh/authorized_keys:
 	: writing file $@  $(file >$@,$(dyndns_authorized_keys_contents))
+
+control: control.sh depends.control .git/refs/heads/master
+	./control.sh depends.control > $@
diff --git a/control.sh b/control.sh
index 5943455..7106187 100755
--- a/control.sh
+++ b/control.sh
@@ -1,8 +1,9 @@
 #!/bin/sh
+VERSION=${VERSION:-$(TZ=UTC date -Is | tr -d :- | tr T . | sed 's/+.*//')}
 cat - "$@" <<END
 Package: $(basename $(pwd))
 Source: $(basename $(pwd))
-Version: $(TZ=UTC date -Is | tr -d :- | tr T . | sed 's/+.*//')
+Version: ${VERSION}
 Architecture: $(dpkg-architecture -q DEB_BUILD_ARCH)
 Origin: local
 Maintainer: root <root@localhost>
-- 
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