first

README.md

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+# Quickstart
+
+- fetch `wget -P stage3 -r -A .tar.xz ftp://ftp.oregonstate.edu/pub/gentoo/releases`
+- import `docker import stage3-whichever.tar.xz gentoo:whatever`
+
+# Notes
+
+- Run cross arch containers with binfmt https://github.com/multiarch/qemu-user-static

vanilla/README.md

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+```
+
+docker run -it --rm                           \
+-v $PWD/gentoo-distfiles:/var/cache/distfiles \
+-v $PWD/gentoo-binpkgs:/var/cache/binpkgs     \
+-v $PWD/gentoo-layman:/var/lib/layman         \
+-v $PWD/gentoo-repos:/var/db/repos            \
+-v $PWD/gentoo-etc:/etc/portage               \
+gentoo /bin/bash
+
+```

vanilla/gentoo-etc/make.conf

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+COMMON_FLAGS="-O2 -pipe"
+
+CFLAGS="${COMMON_FLAGS}"
+
+CXXFLAGS="${COMMON_FLAGS}"
+
+FCFLAGS="${COMMON_FLAGS}"
+
+FFLAGS="${COMMON_FLAGS}"
+
+PORTDIR="/var/db/repos/gentoo"
+
+DISTDIR="/var/cache/distfiles"
+
+PKGDIR="/var/cache/binpkgs"
+
+LC_MESSAGES=C
+
+USE="mmx sse sse2 ssse3 sse4_1 sse4_2 zsh-completion bash-completion ipv6 threads"
+
+CPU_FLAGS_X86="aes avx avx2 fma3 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3"
+
+GRUB_PLATFORMS="efi-64"
+
+VIDEO_CARDS="intel nvidia"
+
+INPUT_DEVICES="evdev keyboard mouse synaptics wacom joystick"
+
+QEMU_SOFTMMU_TARGETS="*"
+
+QEMU_USER_TARGETS="*"
+
+LINGUAS="en en_US"
+
+MAKEOPTS="-j7 -l7"
+
+EMERGE_DEFAULT_OPTS="--with-bdeps=y --jobs=7 --load-average=7 -va --newuse"
+
+ACCEPT_LICENSE="*"
+
+FEATURES="buildpkg -pid-sandbox -ipc-sandbox -network-sandbox"

vanilla/gentoo-etc/make.profile

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+../../var/db/repos/gentoo/profiles/default/linux/amd64/17.1

vanilla/gentoo-etc/repo.postsync.d/example

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+#!/bin/bash
+# Example /etc/portage/repo.postsync.d script. Make it executable (chmod +x) for
+# Portage to process it.
+#
+# With portage-2.2.16 and newer, all repo.postsync.d hooks will be called multiple
+# times after syncing each repository.
+#
+# Older versions of Portage support syncing only one repository.
+# In those versions, the postsync.d hooks will be called only once,
+# and they will not be passed any parameters.
+
+# On a repo.postsync.d hook call, positional parameters contain
+# information about the just-synced repository.
+
+# Your hook can control it's actions depending on any of the three
+# parameters passed in to it.
+#
+# They are as follows:
+#
+# The repository name.
+repository_name=${1}
+# The URI to which the repository was synced.
+sync_uri=${2}
+# The path to the repository.
+repository_path=${3}
+
+# Portage assumes that a hook succeeded if it exits with 0 code. If no
+# explicit exit is done, the exit code is the exit code of last spawned
+# command. Since our script is a bit more complex, we want to control
+# the exit code explicitly.
+ret=0
+
+if [ -n "${repository_name}" ]; then
+	# Repository name was provided, so we're in a post-repository hook.
+	echo "* In post-repository hook for ${repository_name}"
+	echo "** synced from remote repository ${sync_uri}"
+	echo "** synced into ${repository_path}"
+
+	# Gentoo comes with pregenerated cache but the other repositories
+	# usually don't. Generate them to improve performance.
+	if [ "${repository_name}" != "gentoo" ]; then
+		if ! egencache --update --repo="${repository_name}" --jobs=4
+		then
+			echo "!!! egencache failed!"
+			ret=1
+		fi
+	fi
+fi
+if [ -n "${repository_name}" ] && ! [ -e "${repository_path}/metadata/pkg_desc_index" ]; then
+	# Regenerate the metadata/pkg_desc_index file. This is not
+	# needed for https://gitweb.gentoo.org/repo/sync/gentoo.git which
+	# provides a freshly generated copy. The --external-cache-only
+	# option causes the metadata/pkg_desc_index file to be written under
+	# /var/cache/edb/dep instead of the repository itself, so that it
+	# does not interfere with repository verification.
+	if ! egencache --update-pkg-desc-index --external-cache-only --repo="${repository_name}" ${PORTAGE_VERBOSE+--verbose}
+	then
+		echo "!!! egencache failed!"
+		ret=1
+	fi
+fi
+
+# Return explicit status.
+exit "${ret}"