GHA: on macOS remove $HOME/.curlrc

[bagder]

Ref: actions/runner-images#9586
Ref: #13284

[jay]

it's going to be reversed actions/runner-images#9626

[vszakats]

Would it be possible to ignore .curlrc for all tests?

The same can happen with any image anytime, and even more so on a local system with .curlrc customized for daily use.

[bagder]

Would it be possible to ignore .curlrc for all tests?

This certainly shows a use case for exactly that. I imagine the only sensible way to do what is to use an environment variable as a signal.

Slightly related to my "debugging config file options" ideas: https://curl.se/mail/archive-2024-04/0000.html

[bagder]

Removing the file is harmless and fixes the issue short-term so I merge this now.

[vszakats]

Slightly related to my "debugging config file options" ideas: https://curl.se/mail/archive-2024-04/0000.html

Is there any downside in introducing an env to override the default config filename?

E.g. CURL_CONFIG_FILE=~/my-curlrc or CURLRC=~/my-curlrc?

This could also have other uses, and such feature isn't unprecedented with other
tools. This also allows testing the feature itself by pointing it to a test config file.

We could limit it to debug builds, in case there is any concern for production use.

[dfandrich]

Regarding the possibility of ignoring .curlrc for all tests, we could just unconditionally add -q to all curl commands before they're run in runtests.pl. We're adding a lot of other arguments to each curl command already, so one more isn't an issue. That is already overridden by a subsequent -K so tests that need a config file will still work fine.