lib/cli: unexport symbols & sort with generators

lib/cli is very similar to generators, so it should follow largely the
same interface. Similar to how generators isn’t exported, we should
also namespace cli by default (plus “cli” is only three characters to
type).

lib/default.nix

@@ -37,11 +37,13 @@ let
     licenses = callLibs ./licenses.nix;
     systems = callLibs ./systems;
 
+    # serialization
+    cli = callLibs ./cli.nix;
+    generators = callLibs ./generators.nix;
+
     # misc
     asserts = callLibs ./asserts.nix;
-    cli = callLibs ./cli.nix;
     debug = callLibs ./debug.nix;
-    generators = callLibs ./generators.nix;
     misc = callLibs ./deprecated.nix;
 
     # domain-specific
@@ -121,7 +123,6 @@ let
       isOptionType mkOptionType;
     inherit (asserts)
       assertMsg assertOneOf;
-    inherit (cli) encodeGNUCommandLine toGNUCommandLine;
     inherit (debug) addErrorContextToAttrs traceIf traceVal traceValFn
       traceXMLVal traceXMLValMarked traceSeq traceSeqN traceValSeq
       traceValSeqFn traceValSeqN traceValSeqNFn traceShowVal