macro-attr is used at run time in 7 crates. It's used only as a dev dependency in 4 crates (of which 3 directly).

Depender (with downloads and own rev deps) macro-attr version
310 rscp ^0.2.0
1 an-rope ^0.2.0
mfte ^0.2.0
ezomyte ^0.2.0
monitor-switch ^0.2
rofl ^0.2
cargo-contribute ^0.2
199K 38 twoway dev ^0.2
11K 10 subslice dev ^0.2
7.3K 3 galil-seiferas dev ^0.2