source ./common.sh requireDaemonNewerThan "2.4pre20210625" sed -i 's/experimental-features .*/& ca-derivations ca-references/' "$NIX_CONF_DIR"/nix.conf export REMOTE_STORE_DIR="$TEST_ROOT/remote_store" export REMOTE_STORE="file://$REMOTE_STORE_DIR" rm -rf $REMOTE_STORE_DIR clearStore # Build dep1 and push that to the binary cache. # This entails building (and pushing) current-time. nix copy --to "$REMOTE_STORE" -f nondeterministic.nix dep1 clearStore sleep 2 # To make sure that `$(date)` will be different # Build dep2. # As we’ve cleared the cache, we’ll have to rebuild current-time. And because # the current time isn’t the same as before, this will yield a new (different) # realisation nix build -f nondeterministic.nix dep2 --no-link # Build something that depends both on dep1 and dep2. # If everything goes right, we should rebuild dep2 rather than fetch it from # the cache (because that would mean duplicating `current-time` in the closure), # and have `dep1 == dep2`. nix build --substituters "$REMOTE_STORE" -f nondeterministic.nix toplevel --no-require-sigs --no-link