emacs: generate notmuch-pkg.el

This file contains metadata for the built in (as of emacs 24) packaging
system.

Makefile.local

@@ -19,9 +19,12 @@ DATE:=$(shell date +%F)
 endif
 
 VERSION:=$(shell cat ${srcdir}/version)
+ELPA_VERSION:=$(subst ~,_,$(VERSION))
 ifeq ($(filter release release-message pre-release update-versions,$(MAKECMDGOALS)),)
 ifeq ($(IS_GIT),yes)
 VERSION:=$(shell git --git-dir=${srcdir}/.git describe --abbrev=7 --match '[0-9.]*'|sed -e s/_/~/ -e s/-/+/ -e s/-/~/)
+# drop the ~g$sha1 part
+ELPA_VERSION:=$(word 1,$(subst ~, ,$(VERSION)))
 # Write the file 'version.stamp' in case its contents differ from $(VERSION)
 FILE_VERSION:=$(shell test -f version.stamp && read vs < version.stamp || vs=; echo $$vs)
 ifneq ($(FILE_VERSION),$(VERSION))

emacs/.gitignore

@@ -1,3 +1,4 @@
 .eldeps*
 *.elc
 notmuch-version.el
+notmuch-pkg.el

emacs/Makefile.local

@@ -28,6 +28,12 @@ $(dir)/notmuch-version.el: $(srcdir)/$(dir)/notmuch-version.el.tmpl
 	@sed -e 's/%AG%/Generated file (from $(<F)) -- do not edit!/' \
 	     -e 's/%VERSION%/"$(VERSION)"/' $< > $@
 
+$(dir)/notmuch-pkg.el: $(srcdir)/$(dir)/notmuch-pkg.el.tmpl
+	@sed -e 's/%AG%/Generated file (from $(<F)) -- do not edit!/' \
+	     -e 's/%VERSION%/"$(ELPA_VERSION)"/' $< > $@
+
+all: $(dir)/notmuch-pkg.el
+install-emacs: $(dir)/notmuch-pkg.el
 
 emacs_images := \
 	$(srcdir)/$(dir)/notmuch-logo.png
@@ -85,4 +91,4 @@ endif
 	mkdir -p "$(DESTDIR)$(emacsetcdir)"
 	install -m0644 $(emacs_images) "$(DESTDIR)$(emacsetcdir)"
 
-CLEAN := $(CLEAN) $(emacs_bytecode) $(dir)/notmuch-version.el
+CLEAN := $(CLEAN) $(emacs_bytecode) $(dir)/notmuch-version.el $(dir)/notmuch-pkg.el

emacs/notmuch-pkg.el.tmpl

@@ -0,0 +1,6 @@
+;; %AG%
+(define-package
+  "notmuch"
+  %VERSION%
+  "Emacs based front-end (MUA) for notmuch"
+  nil)