build(nix): fix darwin-to-darwin builds #171

Job	Run time
wit-deps-aarch64-unknown-linux-musl	18m 50s
build-doc	7m 44s
cargo audit	1m 5s
wit-deps-aarch64-apple-darwin	16m 21s
cargo fmt	1m 17s
wit-deps-armv7-unknown-linux-musleabihf	20m 8s
cargo clippy	6m 32s
wit-deps-x86_64-apple-darwin	12m 42s
cargo nextest	8m 28s
wit-deps-x86_64-pc-windows-gnu	12m 16s
wit-deps-x86_64-unknown-linux-musl	12m 55s
deploy-doc	0s
wit-deps-universal-darwin	24s
oci	0s
release	0s
	1h 58m 42s

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