conduwuit/bin/nix-build-and-cache

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#!/usr/bin/env bash
set -eo pipefail
toplevel="$(git rev-parse --show-toplevel)"
# Build just the single installable and forward any other arguments too
just() {
# uses nix-output-monitor (nom) if available
if command -v nom &> /dev/null; then
nom build "$@"
else
nix build -L "$@"
fi
if [ -z "$ATTIC_TOKEN" ]; then
echo "\$ATTIC_TOKEN is unset, skipping uploading to the binary cache"
return
fi
# historical "conduit" store for compatibility purposes, same as conduwuit
nix run --inputs-from "$toplevel" attic -- \
login \
conduit \
"${ATTIC_ENDPOINT:-https://attic.kennel.juneis.dog/conduit}" \
"$ATTIC_TOKEN"
# Find all output paths of the installables and their build dependencies
readarray -t derivations < <(nix path-info --derivation "$@")
cache=()
for derivation in "${derivations[@]}"; do
cache+=(
"$(nix-store --query --requisites --include-outputs "$derivation")"
)
done
# Upload them to Attic (conduit store)
#
# Use `xargs` and a here-string because something would probably explode if
# several thousand arguments got passed to a command at once. Hopefully no
# store paths include a newline in them.
(
IFS=$'\n'
nix shell --inputs-from "$toplevel" attic -c xargs \
attic push conduit <<< "${cache[*]}"
)
# main "conduwuit" store
nix run --inputs-from "$toplevel" attic -- \
login \
conduwuit \
"${ATTIC_ENDPOINT:-https://attic.kennel.juneis.dog/conduwuit}" \
"$ATTIC_TOKEN"
# Upload them to Attic (conduwuit store)
#
# Use `xargs` and a here-string because something would probably explode if
# several thousand arguments got passed to a command at once. Hopefully no
# store paths include a newline in them.
(
IFS=$'\n'
nix shell --inputs-from "$toplevel" attic -c xargs \
attic push conduwuit <<< "${cache[*]}"
)
}
# Build and cache things needed for CI
ci() {
cache=(
--inputs-from "$toplevel"
# Keep sorted
"$toplevel#devShells.x86_64-linux.all-features"
attic#default
nixpkgs#direnv
nixpkgs#jq
nixpkgs#nix-direnv
)
just "${cache[@]}"
}
# Build and cache *all* the package outputs from the flake.nix
packages() {
declare -a cache="($(
nix flake show --json 2> /dev/null |
nix run --inputs-from "$toplevel" nixpkgs#jq -- \
-r \
'.packages."x86_64-linux" | keys | map("'"$toplevel"'#" + .) | @sh'
))"
just "${cache[@]}"
}
eval "$@"