Get homebrew recipe in place for email2pdf.

Makefile

@@ -1,3 +1,4 @@
+ROOTDIR :=$(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
 TEMPDIR := $(shell mktemp -t tmp.XXXXXX -d)
 FLAKE8 := $(shell which flake8)
 UNAME := $(shell uname)
@@ -7,6 +8,7 @@ determineversion:
 	$(eval GITDESCRIBE := $(shell git describe --dirty))
 	sed 's/Version: .*/Version: $(GITDESCRIBE)/' debian/DEBIAN/control_template > debian/DEBIAN/control
 	$(eval GITDESCRIBE_ABBREV := $(shell git describe --abbrev=0))
+	sed 's/X\.Y/$(GITDESCRIBE_ABBREV)/' brew/email2pdf_template.rb > brew/email2pdf.rb
 	sed 's/pkgver=X/pkgver=$(GITDESCRIBE_ABBREV)/' PKGBUILD_template > PKGBUILD
 
 ifeq ($(UNAME),Linux)
@@ -54,6 +56,12 @@ unittest:
 unittest_verbose:
 	python3 -m unittest discover -f -v
 
+install_osx_brew: determineversion
+	brew install -f file://$(ROOTDIR)/brew/email2pdf.rb
+
+reinstall_osx_brew: determineversion
+	brew reinstall file://$(ROOTDIR)/brew/email2pdf.rb
+
 analysis:
 	# Debian version is badly packaged, make sure we are using Python 3.
 	-/usr/bin/env python3 $(FLAKE8) --max-line-length=132 email2pdf tests/

brew/.gitignore

@@ -0,0 +1 @@
+email2pdf.rb

brew/email2pdf_template.rb

@@ -0,0 +1,14 @@
+class Email2pdf < Formula
+  desc "Email2PDF"
+  homepage "http://github.com/andrewferrier/email2pdf"
+  url "https://github.com/andrewferrier/email2pdf/archive/X.Y.zip"
+  version "X.Y"
+
+  depends_on "python@3"
+  depends_on "libmagic"
+
+  def install
+      bin.install "email2pdf"
+      doc.install "README.md", "LICENSE.txt"
+  end
+end