# Pastebin hdHBMAuP
[zyga@faroe fedora29]$ cat Makefile 
# The set of packages to install inside the base snap
seed_packages=filesystem coreutils bash util-linux glibc-minimal-langpack
unseed_packages=
# The Fedora release we are building the base snap with
release=29

# The rest should be unchanged
dnf_opts += --setopt=install_weak_deps=False
dnf_opts += --setopt=tsflags=nodocs
dnf_opts += --assumeyes
dnf_opts += --releasever=$(release)
dnf_opts += --config=fedora.conf

.PHONY: snap
snap: dnf_opts += --cacheonly
snap:
	# Install the required packages into the cache directory.
	# Install the filesystem package first as otherwise the info package just hangs.
	sudo dnf $(dnf_opts) --installroot=$(CURDIR)/cache install filesystem glibc-minimal-langpack
	sudo dnf $(dnf_opts) --installroot=$(CURDIR)/cache install $(seed_packages)
	# Copy the cache directory to the prime directory where we prepare our snap.
	sudo rsync -a $(CURDIR)/cache/ $(CURDIR)/prime/
	# Remove packages we don't want in the base snap.
	# sudo dnf $(dnf_opts) --installroot=$(CURDIR)/prime remove $(unseed_packages)
	# Install the /meta/snap.yaml file
	sudo install -d $(CURDIR)/prime/meta
	sudo install -m 644 snap.yaml $(CURDIR)/prime/meta/
	# Install mount points for snapd integration:
	# - /snap where snaps are exposed
	# - /var/snap where system-wide per-snap state is exposed
	# - /var/lib/snapd where snapd state is exposed:
	# - /usr/lib/snapd where snapd.snap (snapd itself) is exposed
	sudo install -d $(CURDIR)/prime/{snap,var/snap,var/lib/snapd,usr/lib/snapd}
	# Post-process and remove log and cache files.
	sudo rm -rf $(CURDIR)/prime/var/log/*
	sudo rm -rf $(CURDIR)/prime/var/cache/dnf
	sudo rm -rf $(CURDIR)/prime/var/tmp/*
	# Post-process and remove everything in the /etc directory, leaving a few
	# integration points (for bind mounting):
	# - /etc/nsswitch.conf
	# - /etc/alternatives (directory)
	# - /etc/ssl (directory)
	sudo rm -rf $(CURDIR)/prime/etc/*
	sudo install -d $(CURDIR)/prime/etc/{alternatives,ssl}
	sudo touch $(CURDIR)/prime/etc/nsswitch.conf
	# Post-process variant information in os-release.
	sudo sed -i -e 's/VARIANT="Workstation Edition"/VARIANT="Base Snap Edition"/' -e 's/VARIANT_ID=workstation/VARIANT_ID=snap/' $(CURDIR)/prime/usr/lib/os-release
	# Create the squashfs file
	sudo mksquashfs ./prime fedora29.snap -noappend -comp xz -no-xattrs -no-fragments

.PHONY: cache
cache: dnf_opts += --downloadonly
cache: dnf_opts += --installroot=$(CURDIR)/cache
cache:
	dnf $(dnf_opts) makecache
	# I'd use pseudo/fakeroot but they both seem broken
	sudo dnf $(dnf_opts) install $(seed_packages)

.PHONY: clean
clean:
	sudo rm -rf prime
	sudo rm -f fedora29.snap

.PHONY: distclean
distclean:
	sudo rm -rf cache