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path: root/tests/ca/build-cache.sh
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#!/usr/bin/env bash

source common.sh

# The substituters didn't work prior to this time.
requireDaemonNewerThan "2.18.0pre20230808"

drv=$(nix-instantiate ./content-addressed.nix -A rootCA --arg seed 1)^out
nix derivation show "$drv" --arg seed 1

buildAttr () {
    local derivationPath=$1
    local seedValue=$2
    shift; shift
    local args=("./content-addressed.nix" "-A" "$derivationPath" --arg seed "$seedValue" "--no-out-link")
    args+=("$@")
    nix-build "${args[@]}"
}

copyAttr () {
    local derivationPath=$1
    local seedValue=$2
    shift; shift
    local args=("-f" "./content-addressed.nix" "$derivationPath" --arg seed "$seedValue")
    args+=("$@")
    # Note: to copy CA derivations, we need to copy the realisations, which
    # currently requires naming the installables, not just the derivation output
    # path.
    nix copy --to file://$cacheDir "${args[@]}"
}

testRemoteCacheFor () {
    local derivationPath=$1
    clearCache
    copyAttr "$derivationPath" 1
    clearStore
    # Check nothing gets built.
    buildAttr "$derivationPath" 1 --option substituters file://$cacheDir --no-require-sigs |& grepQuietInverse " will be built:"
}

testRemoteCache () {
    testRemoteCacheFor rootCA
    testRemoteCacheFor dependentCA
    testRemoteCacheFor dependentNonCA
    testRemoteCacheFor dependentFixedOutput
    testRemoteCacheFor dependentForBuildCA
    testRemoteCacheFor dependentForBuildNonCA
}

clearStore
testRemoteCache