This doesn't appear to work as per page 41, section 4.2.2 Environment Variables in the docs. Strangely enough, though settings of GUILE_LOAD_COMPILED_PATH *are* observed and added to the front of %load-compiled-path.
Cheers, Ian Hulin ================================================================================================== ian@ian-laptop ~/src/lilypond (T1686)$ echo $GUILE_LOAD_PATH ian@ian-laptop ~/src/lilypond (T1686)$ guile GNU Guile 2.0.3 Copyright (C) 1995-2011 Free Software Foundation, Inc. Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'. This program is free software, and you are welcome to redistribute it under certain conditions; type `,show c' for details. Enter `,help' for help. scheme@(guile-user)> %load-path $1 = ("/usr/local/share/guile/2.0" "/usr/local/share/guile/site/2.0" "/usr/local/share/guile/site" "/usr/local/share/guile") scheme@(guile-user)> ,q ian@ian-laptop ~/src/lilypond (T1686)$ declare -x GUILE_LOAD_COMPILED_PATH='/home/ian/src/lilypond/scm/out' ian@ian-laptop ~/src/lilypond (T1686)$ guile GNU Guile 2.0.3 Copyright (C) 1995-2011 Free Software Foundation, Inc. Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'. This program is free software, and you are welcome to redistribute it under certain conditions; type `,show c' for details. Enter `,help' for help. scheme@(guile-user)> %load-path $1 = ("/usr/local/share/guile/2.0" "/usr/local/share/guile/site/2.0" "/usr/local/share/guile/site" "/usr/local/share/guile") scheme@(guile-user)> ^\Quit ian@ian-laptop ~/src/lilypond (T1686)$