wal-g: init at 0.1.2

pkgs/tools/backup/wal-g/default.nix

···
+{ stdenv, buildGoPackage, fetchurl }:
+buildGoPackage rec {
+  name = "wal-g-${version}";
+  version = "0.1.2";
+  src = fetchurl {
+    url = https://github.com/wal-g/wal-g/archive/v0.1.2.tar.gz;
+    sha256 = "0zkjs72gq7sc9cqqzxr6ms1ibk8466zpwmrziq9p4jv9r4iq3bfb";
+  };
+  goPackagePath = "github.com/wal-g/wal-g";
+  meta = {
+    homepage = https://github.com/wal-g/wal-g;
+    license = stdenv.lib.asl20;
+    description = "An archival restoration tool for Postgres";
+    maintainers = [ stdenv.lib.maintainers.ocharles ];
+  };
+}

pkgs/top-level/all-packages.nix

···
   dnstracer = callPackage ../tools/networking/dnstracer {
     inherit (darwin) libresolv;
   };
+
+  wal-g = callPackage ../tools/backup/wal-g {};
 }