99 lines
3.6 KiB
Bash
99 lines
3.6 KiB
Bash
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#!/store/2b2-busybox/bin/ash
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set -uex
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export PATH='/store/2b2-busybox/bin'
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export PATH="$PATH:/store/3a-pkg-config/bin"
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export PATH="$PATH:/store/3a-sqlite/bin"
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export PATH="$PATH:/store/3b-nix/bin"
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export SHELL='/store/2b2-busybox/bin/ash'
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export PKG_CONFIG_PATH=''
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export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/store/3a-sqlite/lib/pkgconfig"
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export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/store/3a-curl/lib/pkgconfig"
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export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/store/3a-editline/lib/pkgconfig"
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export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/store/3a-seccomp/lib/pkgconfig"
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export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/store/3a-libarchive/lib/pkgconfig"
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export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/store/3a-libsodium/lib/pkgconfig"
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export PKG_CONFIG_PATH="$PKG_CONFIG_PATH:/store/3a-lowdown/lib/pkgconfig"
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LIBDIRS=''
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LIBDIRS="$LIBDIRS:$(pkg-config --variable=libdir sqlite3)"
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LIBDIRS="$LIBDIRS:$(pkg-config --variable=libdir libcurl)"
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LIBDIRS="$LIBDIRS:$(pkg-config --variable=libdir libeditline)"
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LIBDIRS="$LIBDIRS:$(pkg-config --variable=libdir libseccomp)"
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LIBDIRS="$LIBDIRS:$(pkg-config --variable=libdir libarchive)"
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LIBDIRS="$LIBDIRS:$(pkg-config --variable=libdir libsodium)"
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LIBDIRS="$LIBDIRS:$(pkg-config --variable=libdir lowdown)"
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LIBDIRS="$LIBDIRS:/store/3a-boost/lib"
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LIBDIRS="$LIBDIRS:/store/2b1-clang/lib"
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export LD_LIBRARY_PATH=$LIBDIRS
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mkdir -p /tmp/4-rebootstrap-using-nix; cd /tmp/4-rebootstrap-using-nix
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echo "### $0: preparing stuff for nix to work..."
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mkdir -p /dev/pts
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mount -t devpts devpts /dev/pts
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ln -s /dev/pts/ptmx /dev/ptmx
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echo "### $0: faking lots of stuff for nix to work..."
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mkdir shelter
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export HOME=/tmp/4-rebootstrap-using-nix/shelter
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export USER=notauser
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echo 'oh come on' >/dev/urandom
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echo "### $0: fixing up paths to shell..."
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cp -a --reflink=auto /using-nix /default.nix /recipes ./
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sed -i 's|/bin/sh|/store/3b-busybox-static/bin/ash|' using-nix/1-stage1.nix
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echo "### $0: pointing to local downloads..."
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sed -i 's| url =| #remote_url =|' using-nix/*.nix
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sed -i 's|# local = \(.*\);|url = "file://\1";|' using-nix/*.nix
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if [ -e /prev/nix/store ] && [ -e /prev/nix-db.tar ]; then
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echo "### $0: restoring nix store & db from previous build..."
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mkdir -p /nix
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cp -a --reflink=auto /prev/nix/store /nix
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tar -xf /prev/nix-db.tar -C /
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sqlite3 /nix/var/nix/db/db.sqlite \
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< /nix/var/nix/db/db.sqlite.dump
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rm /nix/var/nix/db/db.sqlite.dump
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fi
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echo "### $0: writing a 0.nix that simply injects what we've built..."
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# Makefile bootstrap injects it as /stage/protosrc, regular --- as /protosrc
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[ -e /protosrc ] && PROTOSRC="/protosrc" || PROTOSRC=/stage/protosrc
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echo "{ tinycc = /store/3b-tinycc-static/bin/tcc; protosrc = $PROTOSRC; }" \
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> using-nix/0.nix
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echo "### $0: rebuilding everything using nix..."
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nix-build \
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--extra-experimental-features ca-derivations \
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--option build-users-group '' \
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--option compress-build-log false \
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--no-substitute \
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--cores $NPROC \
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--keep-failed \
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-vvv \
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default.nix
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rm -f /dev/urandom
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rm /dev/ptmx
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umount /dev/pts
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umount /dev/pts || true
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rm -r /dev/pts
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rm -r shelter
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rm -rf /build
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# this one is special wrt how the results are saved, see Makefile/USE_NIX_CACHE
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echo "### $0: exporting resulting /nix/store (reproducible)..."
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mkdir -p /store/4-rebootstrap-using-nix/nix
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cp -a --reflink=auto /nix/store /store/4-rebootstrap-using-nix/nix/
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echo "### $0: exporting /nix/var/nix/db to restore it (non-reproducible)..."
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cp /nix/var/nix/db/db.sqlite db.sqlite
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sqlite3 db.sqlite 'UPDATE ValidPaths SET registrationTime = 1;'
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sqlite3 db.sqlite .dump > /nix/var/nix/db/db.sqlite.dump
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tar --exclude nix/var/nix/db/db.sqlite \
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-cf /store/4-rebootstrap-using-nix/nix-db.tar /nix/var/nix/db
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rm /nix/var/nix/db/db.sqlite.dump
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