luarocks_org 1.0 portgroup missing extract dependency

[ryandesign (Ryan Carsten Schmidt)]

Attempting to extract a port that uses the luarocks_org 1.0 portgroup, such as lua51-lpeg, fails:

--->  Extracting lpeg-1.1.0-1.src.rock
DEBUG: setting option extract.args to '/opt/local/var/macports/distfiles/luarocks/lpeg-1.1.0-1.src.rock'
DEBUG: Environment: 
CC_PRINT_OPTIONS='YES'
CC_PRINT_OPTIONS_FILE='/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lua_lua-lpeg/lua51-lpeg/work/.CC_PRINT_OPTIONS'
CPATH='/opt/local/include'
DEVELOPER_DIR='/Library/Developer/CommandLineTools'
LIBRARY_PATH='/opt/local/lib'
MACOSX_DEPLOYMENT_TARGET='12.0'
SDKROOT='/Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk'
Executing:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lua_lua-lpeg/lua51-lpeg/work" && /opt/local/bin/luarocks unpack '/opt/local/var/macports/distfiles/luarocks/lpeg-1.1.0-1.src.rock' 
DEBUG: system:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lua_lua-lpeg/lua51-lpeg/work" && /opt/local/bin/luarocks unpack '/opt/local/var/macports/distfiles/luarocks/lpeg-1.1.0-1.src.rock' 
sh: /opt/local/bin/luarocks: No such file or directory
Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lua_lua-lpeg/lua51-lpeg/work" && /opt/local/bin/luarocks unpack '/opt/local/var/macports/distfiles/luarocks/lpeg-1.1.0-1.src.rock' 
Exit code: 127

It is trying to use /opt/local/bin/luarocks which fails because whatever port provides that file is not declared as an extract dependency.