Hi Guix,

during my packaging attempts of connman (which looks good so far) I
found that gnutls is missing "install-time" dependency - zlib.

1] ldd shows run-time dependency:
$ ldd /gnu/store/0mfgwxgqyhlvi5xyi1j2lbr3ygczsdyp-gnutls-3.2.21/lib/libgnutls.so | grep libz
        libz.so.1 => /gnu/store/x8cg3irwf8y2mkr88bqmsqhadi71xf6s-zlib-1.2.7/lib/libz.so.1 (0x00007fe4fac90000)

2] pkg-config rants about not filled dependencies when building against gnutls

In /gnu/store/0mfgwxgqyhlvi5xyi1j2lbr3ygczsdyp-gnutls-3.2.21/lib/pkgconfig/gnutls.pc you can see

Libs.private: -lz        -lgmp
Requires.private: nettle, hogweed, libtasn1, zlib


That is something which should be solved by "propagate-input"?

Both dependency requirements types are quite easy to detect. I'm not
sure if they shouldn't be done in package build
(maintaining mapping for pkg-config *.pc --> package)

or we should just invest time into package validation afterwards.

WDYT?

S_W