Merge remote-tracking branch 'cd/master'

1 files changed, 63 insertions, 10 deletions

diff --git a/Makefile b/Makefile
index 384c872ab..12a60a90b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,32 @@
-ifndef system
-$(error unbound variable: system)
+stockholm ?= .
+
+ifndef nixos-config
+$(if $(system),,$(error unbound variable: system))
+nixos-config = ./$(LOGNAME)/1systems/$(system).nix
+endif
+
+# target = [target_user@]target_host[:target_port][/target_path]
+ifdef target
+_target_user != echo $(target) | sed -n 's/@.*//p'
+_target_path != echo $(target) | sed -n 's/^[^/]*//p'
+_target_port != echo $(target) | sed -En 's|^.*:([^/]*)(/.*)?$$|\1|p'
+_target_host != echo $(target) | sed -En 's/^(.*@)?([^:/]*).*/\2/p'
+ifneq ($(_target_host),)
+$(if $(target_host),$(error cannot define both, target_host and host in target))
+target_host ?= $(_target_host)
+endif
+ifneq ($(_target_user),)
+$(if $(target_user),$(error cannot define both, target_user and user in target))
+target_user ?= $(_target_user)
+endif
+ifneq ($(_target_port),)
+$(if $(target_port),$(error cannot define both, target_port and port in target))
+target_port ?= $(_target_port)
+endif
+ifneq ($(_target_path),)
+$(if $(target_path),$(error cannot define both, target_path and path in target))
+target_path ?= $(_target_path)
+endif
 endif
 
 export target_host ?= $(system)
@@ -7,29 +34,37 @@ export target_user ?= root
 export target_port ?= 22
 export target_path ?= /var/src
 
+$(if $(target_host),,$(error unbound variable: target_host))
+$(if $(target_user),,$(error unbound variable: target_user))
+$(if $(target_port),,$(error unbound variable: target_port))
+$(if $(target_path),,$(error unbound variable: target_path))
+
 evaluate = \
 	nix-instantiate \
 		--eval \
 		--readonly-mode \
 		--show-trace \
-		-I nixos-config=./$(LOGNAME)/1systems/$(system).nix \
-		-I stockholm=. \
-		$(1)
+		-I nixos-config=$(nixos-config) \
+		-I stockholm=$(stockholm) \
+		-E '{ eval, f }: f eval' \
+		--arg eval 'import ./.' \
+		--arg f "eval@{ config, ... }: $(1)"
 
 execute = \
-	result=$$($(call evaluate,-A config.krebs.build.$(1) --json)) && \
+	result=$$($(call evaluate,config.krebs.build.$(1))) && \
 	script=$$(echo "$$result" | jq -r .) && \
-	echo "$$script" | sh
+	echo "$$script" | PS5=% sh
 
 # usage: make deploy system=foo [target_host=bar]
+deploy: ssh ?= ssh
 deploy:
 	$(call execute,populate)
-	ssh $(target_user)@$(target_host) -p $(target_port) \
+	$(ssh) $(target_user)@$(target_host) -p $(target_port) \
 		nixos-rebuild switch --show-trace -I $(target_path)
 
 # usage: make LOGNAME=shared system=wolf eval.config.krebs.build.host.name
-eval eval.:;@$(call evaluate)
-eval.%:;@$(call evaluate,-A $*)
+eval eval.:;@$(call evaluate,$${expr-eval})
+eval.%:;@$(call evaluate,$*)
 
 # usage: make install system=foo [target_host=bar]
 install: ssh ?= ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null
@@ -41,3 +76,21 @@ install:
 	$(ssh) $(target_user)@$(target_host) -p $(target_port) \
 		env NIXOS_CONFIG=$(target_path)/nixos-config \
 			nixos-install
+
+# usage: make test system=foo [target=bar] [method={eval,build}]
+method ?= eval
+ifeq ($(method),build)
+test: command = nix-build --no-out-link
+else
+ifeq ($(method),eval)
+test: command ?= nix-instantiate --eval --json --readonly-mode --strict
+else
+$(error bad method: $(method))
+endif
+endif
+test: ssh ?= ssh
+test:
+	$(call execute,populate)
+	$(ssh) $(target_user)@$(target_host) -p $(target_port) \
+		$(command) --show-trace -I $(target_path) \
+			-A config.system.build.toplevel $(target_path)/stockholm