usql: fix build with clang 12+

See #166205

pkgs/by-name/us/usql/package.nix

@@ -1,4 +1,5 @@
 { lib
+, stdenv
 , fetchFromGitHub
 , buildGoModule
 , unixODBC
@@ -49,6 +50,11 @@ buildGoModule rec {
     "no_adodb"
   ];
 
+  # Work around https://github.com/NixOS/nixpkgs/issues/166205.
+  env = lib.optionalAttrs stdenv.cc.isClang {
+    NIX_LDFLAGS = "-l${stdenv.cc.libcxx.cxxabi.libName}";
+  };
+
   ldflags = [
     "-s"
     "-w"