Migrate Travis CI setup to Brewfile

.travis.yml

@@ -34,7 +34,9 @@ before_install: |
   if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then
     bash .travis/linux_before_install.sh
   elif [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
-    bash .travis/osx_before_install.sh
+    brew update && brew bundle --file=.travis/Brewfile
+    pip3 install --upgrade pip
+    pip3 install wheel
   fi
 
 install:

.travis/Brewfile

@@ -0,0 +1,12 @@
+brew 'python'
+
+brew 'ghostscript'
+brew 'jbig2dec'
+brew 'leptonica'
+brew 'libffi'
+brew 'libtiff'
+brew 'libxml2'
+brew 'openjpeg'
+brew 'qpdf'
+brew 'tesseract'
+brew 'unpaper'

.travis/autobrew.py

@@ -19,7 +19,7 @@ class Ocrmypdf < Formula
   depends_on "ghostscript"
   depends_on "jpeg"
   depends_on "libpng"
-  depends_on "python3"
+  depends_on "python"
   depends_on "qpdf"
   depends_on "tesseract"
   depends_on "unpaper"

.travis/osx_before_install.sh

@@ -1,17 +0,0 @@
-#!/bin/bash
-# © 2017 James R. Barlow: github.com/jbarlow83
-set -euo pipefail
-set -x
-
-brew update
-
-brew install openjpeg jbig2dec libtiff     # image libraries
-brew install qpdf
-brew install ghostscript
-brew install python3
-brew install libxml2 libffi leptonica
-brew install unpaper   # optional
-brew install tesseract
-
-pip3 install --upgrade pip
-pip3 install wheel