pip install -r requirements.txt doesn't know when package installation fails during native compilation

[michaelkirk]

pip install -r requirements.txt failed on a few packages on the first run (because I didn't have some required headers for some native compilation requirements).

After installing the proper headers, I'd like to rerun "pip install -r requirements.txt" and any packages who's installation wasn't complete would retry.

Instead I had to manually specify

pip install "PackageName"

[ogirardot]

hi, any way to reproduce this ?

[carljm]

Closing until we get adequate repro instructions.