create an Arch PKGBUILD

Summary:
Also including a little script that makes it easier to package your
local copy of the sources (instead of the default, cloning a new repo to
package).

Reviewers: sean

Reviewed By: sean

Differential Revision: https://phabricator.buildinspace.com/D126

packaging/arch/PKGBUILD

@@ -0,0 +1,27 @@
+# Maintainer: Jack O'Connor <oconnor663@gmail.com>
+
+pkgname=peru-git
+pkgdesc='A tool for fetching code'
+url='https://github.com/buildinspace/peru'
+license=('MIT')
+pkgver=0
+pkgver() {
+  cd "$srcdir/peru"
+  echo $(git rev-list --count master).$(git rev-parse --short master)
+}
+pkgrel=1
+arch=('any')
+# Asyncio and pathlib are standard in Python 3.4, so they're not in the
+# dependencies list.
+depends=(python python-yaml python-docopt git)
+optdepends=(
+  'mercurial: fetching from hg repos'
+  'subversion: fetching from svn repos'
+)
+source=('git://github.com/buildinspace/peru')
+md5sums=('SKIP')
+
+package() {
+  cd "$srcdir/peru"
+  python3 setup.py install --root="$pkgdir"
+}

packaging/arch/makelocal.sh

@@ -0,0 +1,17 @@
+#! /bin/bash
+
+# By default, makepkg clones the source repo from github before building. To
+# package your local copy of the sources (including any changes you've made),
+# use this script.
+#
+# See `man makepkg` for relevant options, like -d to ignore missing
+# dependencies. (The only dependency needed for packaging is python.)
+
+set -e
+
+cd $(dirname "$BASH_SOURCE")
+rm -rf src
+mkdir src
+ln -s ../../../.. src/peru
+
+makepkg -e "$@"