Don't ignore transitive imports when probing a static library

[amyspark]

This is needed towards building GStreamer's Rust plugins statically on Windows.

CC @nirbheek

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[gdesmott]

We stopped relying on pkg-config to print metadata as we do it manually, see 331bab3e90687b3892acf2e8868668448611766b

Shouldn't we fix that manual code instead then?

[amyspark]

@gdesmott I assume you mean this? https://github.com/gdesmott/system-deps/blob/331bab3e90687b3892acf2e8868668448611766b/src/lib.rs#L152

If so, I'll see what I can do.

[amyspark]

@gdesmott I found the code, it needs a copy of rust-lang/pkg-config-rs#154 applied. Let me know if this looks OK now.

[amyspark]

@gdesmott Hi again, just updated the PR. Could this be reviewed now?

[gdesmott]

The change seems safe enough now.

Which actual use case is it fixing? Did you check it build and is usable now?

[sdroege]

FWIW the pkg-config-rs change that does basically the same is merged and released

[gdesmott]

@amyspark : sorry I missed your latest update.

Can you please rebase on top of main (I just fixed the CI) so we can merge this?

[amyspark]

@gdesmott done, let me know if anything else's needed.

[gdesmott]

Released in 6.2.1, sorry for the delay.