Merge branch 'staging'

Hydra looks very good: https://hydra.nixos.org/eval/1409475?compare=1409440
There's mainly some fallout from aarch64-linux not building `go`
on the first attempt.

pkgs/applications/version-management/git-and-tools/git/default.nix

@@ -53,9 +53,6 @@ stdenv.mkDerivation {
   NIX_LDFLAGS = stdenv.lib.optionalString (!stdenv.cc.isClang) "-lgcc_s"
               + stdenv.lib.optionalString (stdenv.isFreeBSD) "-lthr";
 
-  # without this, git fails when trying to check for /etc/gitconfig existence
-  propagatedSandboxProfile = stdenv.lib.sandbox.allowDirectoryList "/etc";
-
   makeFlags = "prefix=\${out} PERL_PATH=${perl}/bin/perl SHELL_PATH=${stdenv.shell} "
       + (if pythonSupport then "PYTHON_PATH=${python}/bin/python" else "NO_PYTHON=1")
       + (if stdenv.isSunOS then " INSTALL=install NO_INET_NTOP= NO_INET_PTON=" else "")