sagelib: fix missing pkgs.pkgconfig

Again: eb3f0aef43 #54306
Apparently the derivation needs both pkgconfigs
(it fails when missing either).

+3
+1
pkgs/applications/science/math/sage/default.nix
··· 35 35 inherit flint ecl arb; 36 36 inherit sage-src pynac singular; 37 37 linbox = pkgs.linbox.override { withSage = true; }; 38 + pkg-config = pkgs.pkgconfig; # not to confuse with pythonPackages.pkgconfig 38 39 }; 39 40 }; 40 41 };
+2
pkgs/applications/science/math/sage/sagelib.nix
··· 30 30 , numpy 31 31 , pari 32 32 , pkgconfig 33 + , pkg-config 33 34 , planarity 34 35 , ppl 35 36 , pynac ··· 63 64 iml 64 65 perl 65 66 jupyter_core 67 + pkg-config 66 68 ]; 67 69 68 70 buildInputs = [