curl: split into multiple outputs

Also use pkgconfig to be safer and fix (some) referrers.

pkgs/tools/misc/debian-devscripts/default.nix

@@ -28,7 +28,7 @@ stdenv.mkDerivation rec {
       -e "s@/usr/(s|)bin/sendmail@${sendmailPath}@g" \
       -e "s@/usr/bin/diff@${diffutils}/bin/diff@g" \
       -e "s@/usr/bin/gpgv(2|)@${gnupg}/bin/gpgv2@g" \
-      -e "s@(command -v|/usr/bin/)curl@${curl}/bin/curl@g" \
+      -e "s@(command -v|/usr/bin/)curl@${curl.bin}/bin/curl@g" \
       -i {} +
     sed -e "s@/usr/share/sgml/[^ ]*/manpages/docbook.xsl@${docbook_xsl}/xml/xsl/docbook/manpages/docbook.xsl@" -i scripts/Makefile
     sed -r \