[gtk-osx-users] Module Not Found?

[David Lowe <doctorjlowe twc com>]

So, i’m taking my first baby steps - i have a modules file with just boilerplate xml

> [gtk@Daves-i7:~]$ more freeciv.modules
> <?xml version="1.0"?>
> <!DOCTYPE moduleset SYSTEM "moduleset.dtd">
> <?xml-stylesheet type="text/xsl" href="moduleset.xsl"?>
> <moduleset>
>     <include href="http://git.gnome.org/browse/gtk-osx/plain/modulesets-stable/gtk-osx.modules"/>
>
> </moduleset>

and a boilerplate configuration

> [gtk@Daves-i7:~]$ more .jhbuildrc-custom
> moduleset=os.environ['HOME'] + '/freeciv.modules’

yet jhbuild doesn’t like something…

> [gtk@Daves-i7:~]$ echo $PATH
> /usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/opt/X11/bin:/Users/gtk/.local/bin
> [gtk@Daves-i7:~]$ jhbuild build freeciv
> jhbuild build: A module called ''freeciv'' could not be found.
> Usage: jhbuild [ -f config ] command [ options … ]

I did a web search for "jhbuild build: A module called '''' could not be found.” and got nothing useful.  
What am i doing wrong?