packages/skopeo (#12348)

* bump eospac version

* Revert "bump eospac version"

This reverts commit 835b1f822d8c083f6ab9eb17222c00409e8eb3da.

* new package: skopeo

* address flake8 issues

* address adamjstewart's comments

* use the Executable class and undocumented 'str' feature for output

* Package -> MakefilePackage

* add missing build phase

* patch -> edit phase

var/spack/repos/builtin/packages/skopeo/package.py

@@ -0,0 +1,43 @@
+# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+
+from spack import *
+
+
+class Skopeo(MakefilePackage):
+    """skopeo is a command line utility that performs various operations on
+    container images and image repositories."""
+
+    homepage = "https://github.com/containers/skopeo"
+    url      = "https://github.com/containers/skopeo/archive/v0.1.39.tar.gz"
+
+    version('0.1.39', sha256='e9d70f7f7b891675a816f06a22df0490285ad20eefbd91f5da69ca12f56c29f2')
+    version('0.1.38', sha256='104ceb9c582dc5c3a49dd1752c4c326bba03f2f801596f089372e831f48ed705')
+    version('0.1.37', sha256='49c0c1b2c2f32422d3230f827ae405fc554fb34af41a54e59b2121ac1500505d')
+    version('0.1.36', sha256='42f9b0bf53ae44bc294be400e2c5259f977ffa4d5dbac3576b0b5e23d59791fd')
+
+    depends_on('go')
+    depends_on('gpgme')
+    depends_on('libassuan')
+    depends_on('libgpg-error')
+
+    def edit(self, spec, prefix):
+        grep = which('grep')
+        files = grep('-lR', '/etc/containers/', 'vendor', output=str,
+                     env={'PATH': '/usr/bin:/bin:/usr/sbin:/sbin'})
+
+        for f in files.splitlines():
+            edit = FileFilter(f)
+            edit.filter('/etc/containers/', '{0}/etc/containers/'.
+                        format(prefix))
+
+    def build(self, spec, prefix):
+        make('binary-local')
+
+    def install(self, spec, prefix):
+        make('binary-local', 'install',
+             'DESTDIR={0}'.format(prefix),
+             'PREFIX={0}'.format(prefix))