alpine: pull CC_FOR_BUILD

Without the change alpine build on aarch64-linux fails due to missing
$target-gcc wrapper: https://hydra.nixos.org/build/219995705

checking whether the C compiler works... no
configure: error: in `/build/alpine':
configure: error: C compiler cannot create executables

+14 -2
+14 -2
pkgs/applications/networking/mailreaders/alpine/default.nix
··· 1 - { lib, stdenv, fetchgit, ncurses, tcl, openssl, pam, libkrb5 2 - , openldap, libxcrypt, gitUpdater 3 }: 4 5 stdenv.mkDerivation rec { ··· 11 rev = "v${version}"; 12 hash = "sha256-cJyUBatQBjD6RG+jesJ0JRhWghPRBACc/HQl+2aCTd0="; 13 }; 14 15 buildInputs = [ 16 ncurses tcl openssl pam libkrb5 openldap libxcrypt
··· 1 + { lib 2 + , stdenv 3 + , fetchgit 4 + , buildPackages 5 + , ncurses 6 + , tcl 7 + , openssl 8 + , pam 9 + , libkrb5 10 + , openldap 11 + , libxcrypt 12 + , gitUpdater 13 }: 14 15 stdenv.mkDerivation rec { ··· 21 rev = "v${version}"; 22 hash = "sha256-cJyUBatQBjD6RG+jesJ0JRhWghPRBACc/HQl+2aCTd0="; 23 }; 24 + 25 + depsBuildBuild = [ buildPackages.stdenv.cc ]; 26 27 buildInputs = [ 28 ncurses tcl openssl pam libkrb5 openldap libxcrypt