lilypond-book and latex indenting issue

[Vaylor Trucks]

I'm not sure if this is a LaTeX question or a Lilypond question. I would 
very much like for music examples embedded with \lilypondfile to be flush 
against the left margin, in line with my text. However, there always seems 
to be space added to the left of my embedded music. Here is some sample 
.lytex code:

    \documentclass{article}
    \usepackage[letterpaper, portrait, margin=1in]{geometry}    
    \usepackage{parskip}                                                        
                        
    \usepackage{graphics}                                                       
                        
    \begin{document}
    This is some sample text. Note where the left hand margin is, compared 
with the musical example below. I would like for the two to have the same 
margin with no indentation.
    \lilypondfile[noindent]{indent-test.ly}
    \end{document}

and here is the sample indent-text.ly code I used:

    \version "2.18.2"
    \score {<< \new Staff { \relative c' {c4 d e f} } >>}
    \paper{ indent=#0
    left-margin = #0 }

As you can see, I have specified no indent in both the LaTeX and Lilypond 
source, but this is still the result.(http://i.imgur.com/8gx291c.jpg). 
What am I missing?