Add mock configuration for building against the local dnf repository

configuration.

diff --git a/mock/host.cfg b/mock/host.cfg
new file mode 100644 (file)
index 0000000..fe983c6
--- /dev/null
+++ b/mock/host.cfg
@@ -0,0 +1,56 @@
+# Mock configuration file to build against the local system's dnf repository
+# configuration.
+# https://mattmccutchen.net/utils/#rpm
+#
+# This file contains some settings tuned for building in Qubes OS template-based
+# VMs, but you can easily change them for other environments.
+
+config_opts['root'] = 'host'
+# TODO: Can we detect this automatically?
+config_opts['target_arch'] = 'x86_64'
+
+# Try without root cache?
+config_opts['plugin_conf']['root_cache_enable'] = False
+
+# For now, we are sharing the host yum cache.  If we want a separate one, we
+# can enable this plugin.
+config_opts['plugin_conf']['yum_cache_enable'] = False
+
+# We do not need the "bootstrap" feature since the host's RPM stack is the same
+# as the target's.
+config_opts['use_bootstrap'] = False
+
+config_opts['dnf_common_opts'] = [
+
+  # Share the host dnf configuration.
+  '--config=/etc/dnf/dnf.conf',
+  '--setopt=reposdir=/etc/yum.repos.d',
+
+  # And the releasever.
+  '--releasever=/',
+
+  # And the cache.  Binding this with the bind_mount plugin does not work since
+  # it is considered a "user mount" and doesn't get mounted in time.
+  '--setopt=cachedir=/var/cache/dnf',
+
+  # qubes-hooks signals Qubes OS about changes to the real VM.  We don't want to
+  # run it for changes to a mock environment.
+  '--disableplugin=qubes-hooks',
+
+  # If we build the same package several times in a row on the same run of a VM
+  # (a common case if there is a problem on the first try), avoid downloading
+  # the build dependencies multiple times.  I think a real VM transaction could
+  # lose the packages, but that should be uncommon and not worth worrying about
+  # now.  VM restart provides a reasonable lifespan for us to clear the cache.
+  '--setopt=keepcache=1',
+
+  # Looks like we need this.  Fedora's mock configs put it in the generated
+  # dnf.conf.
+  '--assumeyes',
+]
+
+# /var/cache/mock shouldn't be used for anything important right now, but if we
+# want to make it persistent, the plan is to make it a symlink to /home/mock-cache .
+
+# mock raises an error if this is not set.
+config_opts['dnf.conf'] = 'THIS IS A SYNTAX ERROR; THIS FILE SHOULD NOT BE USED'