pio-proc is used at run time in 17 crates (of which 1 optionally). It is a direct run-time dependency in 9 crates. It's used only as a dev dependency in 4 crates (of which 3 directly).

Depender (with downloads and own rev deps) pio-proc version
7.7K 10 embassy-rp ^0.2
440 cyw43-pio ^0.2
150 pio-uart ^0.2.2
130 dht-pio ^0.2.2
1 i2c-pio ^0.2.0
cs4272 ^0.2.2
servo-pio ^0.2.1
hub75-pio ^0.2.1
pimoroni-tufty2040 ^0.2.2
10K 54 rp2040-hal dev ^0.2.0
8.5K 15 rp-pico dev ^0.2.2
380 3 rp235x-hal dev ^0.2.0